- Reverted r296062 and r296065

1 files changed, 677 insertions, 1104 deletions

diff --git a/main/output.c b/main/output.c
index e6074e12ba..bee6ef8aa8 100644
--- a/main/output.c
+++ b/main/output.c
@@ -1,4 +1,4 @@
-/*
+/* 
    +----------------------------------------------------------------------+
    | PHP Version 5                                                        |
    +----------------------------------------------------------------------+
@@ -15,1288 +15,775 @@
    | Authors: Zeev Suraski <zeev@zend.com>                                |
    |          Thies C. Arntzen <thies@thieso.net>                         |
    |          Marcus Boerger <helly@php.net>                              |
-   | New API: Michael Wallner <mike@php.net>                              |
    +----------------------------------------------------------------------+
 */
 
 /* $Id$ */
 
-#ifndef PHP_OUTPUT_DEBUG
-# define PHP_OUTPUT_DEBUG 0
-#endif
-#ifndef PHP_OUTPUT_NOINLINE
-# define PHP_OUTPUT_NOINLINE 0
-#endif
-
 #include "php.h"
 #include "ext/standard/head.h"
+#include "ext/standard/basic_functions.h"
 #include "ext/standard/url_scanner_ex.h"
-#include "SAPI.h"
-#include "zend_stack.h"
-#include "php_output.h"
-
-ZEND_DECLARE_MODULE_GLOBALS(output);
-
-#if PHP_OUTPUT_NOINLINE || PHP_OUTPUT_DEBUG
-# undef inline
-# define inline
+#if HAVE_ZLIB && !defined(COMPILE_DL_ZLIB)
+#include "ext/zlib/php_zlib.h"
 #endif
+#include "SAPI.h"
 
-/* {{{ aliases, conflict and reverse conflict hash tables */
-static HashTable php_output_handler_aliases;
-static HashTable php_output_handler_conflicts;
-static HashTable php_output_handler_reverse_conflicts;
-/* }}} */
-
-/* {{{ forward declarations */
-static inline int php_output_lock_error(int op TSRMLS_DC);
-static inline void php_output_op(int op, const char *str, size_t len TSRMLS_DC);
-
-#define php_output_handler_init(n, cs, f) php_output_handler_init_ex((n), (cs), (f) TSRMLS_CC)
-static inline php_output_handler *php_output_handler_init_ex(zval *name, size_t chunk_size, int flags TSRMLS_DC);
-static inline php_output_handler_status_t php_output_handler_op(php_output_handler *handler, php_output_context *context);
-static inline int php_output_handler_append(php_output_handler *handler, const php_output_buffer *buf TSRMLS_DC);
-static inline zval *php_output_handler_status(php_output_handler *handler, zval *entry);
-
-static inline php_output_context *php_output_context_init(php_output_context *context, int op TSRMLS_DC);
-static inline void php_output_context_reset(php_output_context *context);
-static inline void php_output_context_swap(php_output_context *context);
-static inline void php_output_context_dtor(php_output_context *context);
+#define OB_DEFAULT_HANDLER_NAME "default output handler"
 
-static inline int php_output_stack_pop(int flags TSRMLS_DC);
+/* output functions */
+static int php_b_body_write(const char *str, uint str_length TSRMLS_DC);
 
-static int php_output_stack_apply_op(void *h, void *c);
-static int php_output_stack_apply_clean(void *h, void *c);
-static int php_output_stack_apply_list(void *h, void *z);
-static int php_output_stack_apply_status(void *h, void *z);
+static int php_ob_init(uint initial_size, uint block_size, zval *output_handler, uint chunk_size, zend_bool erase TSRMLS_DC);
+static void php_ob_append(const char *text, uint text_length TSRMLS_DC);
+#if 0
+static void php_ob_prepend(const char *text, uint text_length);
+#endif
 
-static int php_output_handler_compat_func(void **handler_context, php_output_context *output_context);
-static int php_output_handler_default_func(void **handler_context, php_output_context *output_context);
-static int php_output_handler_devnull_func(void **handler_context, php_output_context *output_context);
-/* }}} */
+#ifdef ZTS
+int output_globals_id;
+#else
+php_output_globals output_globals;
+#endif
 
-/* {{{ static void php_output_init_globals(zend_output_globals *G)
-	Initialize the module globals on MINIT */
-static inline void php_output_init_globals(zend_output_globals *G)
+/* {{{ php_default_output_func */
+PHPAPI int php_default_output_func(const char *str, uint str_len TSRMLS_DC)
 {
-	memset(G, 0, sizeof(*G));
+	fwrite(str, 1, str_len, stderr);
+/* See http://support.microsoft.com/kb/190351 */
+#ifdef PHP_WIN32
+	fflush(stderr);
+#endif
+	return str_len;
 }
 /* }}} */
 
-/* {{{ void php_output_startup(void)
-	Set up module globals and initalize the conflict and reverse conflict hash tables */
-PHPAPI void php_output_startup(void)
+/* {{{ php_output_init_globals */
+static void php_output_init_globals(php_output_globals *output_globals_p TSRMLS_DC)
 {
-	ZEND_INIT_MODULE_GLOBALS(output, php_output_init_globals, NULL);
-	zend_hash_init(&php_output_handler_aliases, 0, NULL, NULL, 1);
-	zend_hash_init(&php_output_handler_conflicts, 0, NULL, NULL, 1);
-	zend_hash_init(&php_output_handler_reverse_conflicts, 0, NULL, (void (*)(void *)) zend_hash_destroy, 1);
+ 	OG(php_body_write) = php_default_output_func;
+	OG(php_header_write) = php_default_output_func;
+	OG(implicit_flush) = 0;
+	OG(output_start_filename) = NULL;
+	OG(output_start_lineno) = 0;
 }
 /* }}} */
 
-/* {{{ void php_output_shutdown(void)
-	Destroy module globals and the conflict and reverse conflict hash tables */
-PHPAPI void php_output_shutdown(void)
-{
-	zend_hash_destroy(&php_output_handler_aliases);
-	zend_hash_destroy(&php_output_handler_conflicts);
-	zend_hash_destroy(&php_output_handler_reverse_conflicts);
-}
-/* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_activate(TSRMLS_D)
-	Reset output globals and setup the output handler stack */
-PHPAPI int php_output_activate(TSRMLS_D)
+/* {{{ php_output_startup
+   Start output layer */
+PHPAPI void php_output_startup(void)
 {
 #ifdef ZTS
-	memset((*((void ***) tsrm_ls))[TSRM_UNSHUFFLE_RSRC_ID(output_globals_id)], 0, sizeof(zend_output_globals));
-#else
-	memset(&output_globals, 0, sizeof(zend_output_globals));
+	ts_allocate_id(&output_globals_id, sizeof(php_output_globals), (ts_allocate_ctor) php_output_init_globals, NULL);
+#else 
+	php_output_init_globals(&output_globals TSRMLS_CC);
 #endif
-	
-	OG(handlers) = emalloc(sizeof(zend_stack));
-	if (SUCCESS != zend_stack_init(OG(handlers))) {
-		return FAILURE;
-	}
-	
-	MAKE_STD_ZVAL(OG(default_output_handler_name));
-	ZVAL_STRINGL(OG(default_output_handler_name), "default output handler", sizeof("default output handler")-1, 1);
-	MAKE_STD_ZVAL(OG(devnull_output_handler_name));
-	ZVAL_STRINGL(OG(devnull_output_handler_name), "null output handler", sizeof("null output handler")-1, 1);
-	
-	return SUCCESS;
 }
 /* }}} */
 
-/* {{{ void php_output_deactivate(TSRMLS_D)
-	Destroy the output handler stack */
-PHPAPI void php_output_deactivate(TSRMLS_D)
-{
-	php_output_handler **handler = NULL;
-	
-	OG(active) = NULL;
-	OG(running) = NULL;
-	
-	/* release all output handlers */
-	if (OG(handlers)) {
-		while (SUCCESS == zend_stack_top(OG(handlers), (void *) &handler)) {
-			php_output_handler_free(handler TSRMLS_CC);
-			zend_stack_del_top(OG(handlers));
-		}
-		zend_stack_destroy(OG(handlers));
-		efree(OG(handlers));
-		OG(handlers) = NULL;
-	}
-	
-	if (OG(default_output_handler_name)) {
-		zval_ptr_dtor(&OG(default_output_handler_name));
-		OG(default_output_handler_name) = NULL;
-	}
-	if (OG(devnull_output_handler_name)) {
-		zval_ptr_dtor(&OG(devnull_output_handler_name));
-		OG(devnull_output_handler_name) = NULL;
-	}
-}
-/* }}} */
 
-/* {{{ void php_output_register_constants() */
-PHPAPI void php_output_register_constants(TSRMLS_D)
+/* {{{ php_output_activate
+   Initilize output global for activation */
+PHPAPI void php_output_activate(TSRMLS_D)
 {
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_START", PHP_OUTPUT_HANDLER_START, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_WRITE", PHP_OUTPUT_HANDLER_WRITE, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_FLUSH", PHP_OUTPUT_HANDLER_FLUSH, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_CLEAN", PHP_OUTPUT_HANDLER_CLEAN, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_FINAL", PHP_OUTPUT_HANDLER_FINAL, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_CONT", PHP_OUTPUT_HANDLER_WRITE, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_END", PHP_OUTPUT_HANDLER_FINAL, CONST_CS | CONST_PERSISTENT);
-
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_CLEANABLE", PHP_OUTPUT_HANDLER_CLEANABLE, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_FLUSHABLE", PHP_OUTPUT_HANDLER_FLUSHABLE, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_REMOVABLE", PHP_OUTPUT_HANDLER_REMOVABLE, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_STDFLAGS", PHP_OUTPUT_HANDLER_STDFLAGS, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_STARTED", PHP_OUTPUT_HANDLER_STARTED, CONST_CS | CONST_PERSISTENT);
-	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_DISABLED", PHP_OUTPUT_HANDLER_DISABLED, CONST_CS | CONST_PERSISTENT);
+	OG(php_body_write) = php_ub_body_write;
+	OG(php_header_write) = sapi_module.ub_write;
+	OG(ob_nesting_level) = 0;
+	OG(ob_lock) = 0;
+	OG(disable_output) = 0;
+	OG(output_start_filename) = NULL;
+	OG(output_start_lineno) = 0;
 }
 /* }}} */
 
-/* {{{ void php_output_set_status(int status TSRMLS_DC)
-	Used by SAPIs to disable output */
-PHPAPI void php_output_set_status(int status TSRMLS_DC)
-{
-	OG(flags) = status & 0xf;
-}
-/* }}} */
 
-/* {{{ int php_output_get_status(TSRMLS_C)
-	Get output control status */
-PHPAPI int php_output_get_status(TSRMLS_D)
+/* {{{ php_output_set_status
+   Toggle output status.  Do NOT use in application code, only in SAPIs where appropriate. */
+PHPAPI void php_output_set_status(zend_bool status TSRMLS_DC)
 {
-	return OG(flags)
-			| (OG(active) ? PHP_OUTPUT_ACTIVE : 0)
-			| (OG(running)? PHP_OUTPUT_LOCKED : 0);
+	OG(disable_output) = !status;
 }
 /* }}} */
 
-/* {{{ zval *php_output_get_default_handler_name(TSRMLS_C) */
-PHPAPI zval *php_output_get_default_handler_name(TSRMLS_D)
+/* {{{ php_output_register_constants */
+void php_output_register_constants(TSRMLS_D)
 {
-	return OG(default_output_handler_name);
+	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_START", PHP_OUTPUT_HANDLER_START, CONST_CS | CONST_PERSISTENT);
+	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_CONT", PHP_OUTPUT_HANDLER_CONT, CONST_CS | CONST_PERSISTENT);
+	REGISTER_MAIN_LONG_CONSTANT("PHP_OUTPUT_HANDLER_END", PHP_OUTPUT_HANDLER_END, CONST_CS | CONST_PERSISTENT);
 }
 /* }}} */
 
-/* {{{ zval *php_output_get_devnull_handler_name(TSRMLS_C) */
-PHPAPI zval *php_output_get_devnull_handler_name(TSRMLS_D)
-{
-	return OG(devnull_output_handler_name);
-}
-/* }}} */
 
-/* {{{ int php_output_write_unbuffered(const char *str, size_t len TSRMLS_DC)
-	Unbuffered write */
-PHPAPI int php_output_write_unbuffered(const char *str, size_t len TSRMLS_DC)
+/* {{{ php_body_write
+ * Write body part */
+PHPAPI int php_body_write(const char *str, uint str_length TSRMLS_DC)
 {
-	if (OG(flags) & PHP_OUTPUT_DISABLED) {
-		return 0;
-	}
-	return sapi_module.ub_write(str, len TSRMLS_CC);
+	return OG(php_body_write)(str, str_length TSRMLS_CC);	
 }
 /* }}} */
 
-/* {{{ int php_output_write(const char *str, size_t len TSRMLS_DC)
-	Buffered write */
-PHPAPI int php_output_write(const char *str, size_t len TSRMLS_DC)
+/* {{{ php_header_write
+ * Write HTTP header */
+PHPAPI int php_header_write(const char *str, uint str_length TSRMLS_DC)
 {
-	if (OG(flags) & PHP_OUTPUT_DISABLED) {
+	if (OG(disable_output)) {
 		return 0;
+	} else {
+		return OG(php_header_write)(str, str_length TSRMLS_CC);
 	}
-	php_output_op(PHP_OUTPUT_HANDLER_WRITE, str, len TSRMLS_CC);
-	return (int) len;
 }
 /* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_flush(TSRMLS_D)
-	Flush the most recent output handlers buffer */
-PHPAPI int php_output_flush(TSRMLS_D)
+/* {{{ php_start_ob_buffer
+ * Start output buffering */
+PHPAPI int php_start_ob_buffer(zval *output_handler, uint chunk_size, zend_bool erase TSRMLS_DC)
 {
-	php_output_context context;
-	
-	if (OG(active) && (OG(active)->flags & PHP_OUTPUT_HANDLER_FLUSHABLE)) {
-		php_output_context_init(&context, PHP_OUTPUT_HANDLER_FLUSH TSRMLS_CC);
-		php_output_handler_op(OG(active), &context);
-		if (context.out.data && context.out.used) {
-			zend_stack_del_top(OG(handlers));
-			php_output_write(context.out.data, context.out.used TSRMLS_CC);
-			zend_stack_push(OG(handlers), &OG(active), sizeof(php_output_handler *));
+	uint initial_size, block_size;
+
+	if (OG(ob_lock)) {
+		if (SG(headers_sent) && !SG(request_info).headers_only) {
+			OG(php_body_write) = php_ub_body_write_no_header;
+		} else {
+			OG(php_body_write) = php_ub_body_write;
 		}
-		php_output_context_dtor(&context);
-		return SUCCESS;
+		OG(ob_nesting_level) = 0;
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_ERROR, "Cannot use output buffering in output buffering display handlers");
+		return FAILURE;
 	}
-	return FAILURE;
-}
-/* }}} */
-
-/* {{{ void php_output_flush_all(TSRMLS_C)
-	Flush all output buffers subsequently */
-PHPAPI void php_output_flush_all(TSRMLS_D)
-{
-	if (OG(active)) {
-		php_output_op(PHP_OUTPUT_HANDLER_FLUSH, NULL, 0 TSRMLS_CC);
+	if (chunk_size > 0) {
+		if (chunk_size==1) {
+			chunk_size = 4096;
+		}
+		initial_size = (chunk_size*3/2);
+		block_size = chunk_size/2;
+	} else {
+		initial_size = 40*1024;
+		block_size = 10*1024;
 	}
+	return php_ob_init(initial_size, block_size, output_handler, chunk_size, erase TSRMLS_CC);
 }
 /* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_clean(TSRMLS_D)
-	Cleans the most recent output handlers buffer if the handler is cleanable */
-PHPAPI int php_output_clean(TSRMLS_D)
+/* {{{ php_start_ob_buffer_named
+ * Start output buffering */
+PHPAPI int php_start_ob_buffer_named(const char *output_handler_name, uint chunk_size, zend_bool erase TSRMLS_DC)
 {
-	php_output_context context;
-	
-	if (OG(active) && (OG(active)->flags & PHP_OUTPUT_HANDLER_CLEANABLE)) {
-		OG(active)->buffer.used = 0;
-		php_output_context_init(&context, PHP_OUTPUT_HANDLER_CLEAN TSRMLS_CC);
-		php_output_handler_op(OG(active), &context);
-		php_output_context_dtor(&context);
-		return SUCCESS;
-	}
-	return FAILURE;
+	zval *output_handler;
+	int result;
+
+	ALLOC_INIT_ZVAL(output_handler);
+	Z_STRLEN_P(output_handler) = strlen(output_handler_name);	/* this can be optimized */
+	Z_STRVAL_P(output_handler) = estrndup(output_handler_name, Z_STRLEN_P(output_handler));
+	Z_TYPE_P(output_handler) = IS_STRING;
+	result = php_start_ob_buffer(output_handler, chunk_size, erase TSRMLS_CC);
+	zval_dtor(output_handler);
+	FREE_ZVAL(output_handler);
+	return result;
 }
 /* }}} */
 
-/* {{{ void php_output_clean_all(TSRMLS_D)
-	Cleans all output handler buffers, without regard whether the handler is cleanable */
-PHPAPI void php_output_clean_all(TSRMLS_D)
+/* {{{ php_end_ob_buffer
+ * End output buffering (one level) */
+PHPAPI void php_end_ob_buffer(zend_bool send_buffer, zend_bool just_flush TSRMLS_DC)
 {
-	php_output_context context;
-	
-	if (OG(active)) {
-		php_output_context_init(&context, PHP_OUTPUT_HANDLER_CLEAN TSRMLS_CC);
-		zend_stack_apply_with_argument(OG(handlers), ZEND_STACK_APPLY_TOPDOWN, php_output_stack_apply_clean, &context);
-	}
-}
+	char *final_buffer=NULL;
+	unsigned int final_buffer_length=0;
+	zval *alternate_buffer=NULL;
+	char *to_be_destroyed_buffer, *to_be_destroyed_handler_name;
+	char *to_be_destroyed_handled_output[2] = { 0, 0 };
+	int status;
+	php_ob_buffer *prev_ob_buffer_p=NULL;
+	php_ob_buffer orig_ob_buffer;
 
-/* {{{ SUCCESS|FAILURE php_output_end(TSRMLS_D)
-	Finalizes the most recent output handler at pops it off the stack if the handler is removable */
-PHPAPI int php_output_end(TSRMLS_D)
-{
-	if (php_output_stack_pop(PHP_OUTPUT_POP_TRY TSRMLS_CC)) {
-		return SUCCESS;
+	if (OG(ob_nesting_level)==0) {
+		return;
+	}
+	status = 0;
+	if (!OG(active_ob_buffer).status & PHP_OUTPUT_HANDLER_START) {
+		/* our first call */
+		status |= PHP_OUTPUT_HANDLER_START;
+	}
+	if (just_flush) {
+		status |= PHP_OUTPUT_HANDLER_CONT;
+	} else {
+		status |= PHP_OUTPUT_HANDLER_END;
 	}
-	return FAILURE;
-}
-/* }}} */
 
-/* {{{ void php_output_end_all(TSRMLS_D)
-	Finalizes all output handlers and ends output buffering without regard whether a handler is removable */
-PHPAPI void php_output_end_all(TSRMLS_D)
-{
-	while (OG(active) && php_output_stack_pop(PHP_OUTPUT_POP_FORCE TSRMLS_CC));
-}
-/* }}} */
+#if 0
+ {
+	 FILE *fp;
+	 fp = fopen("/tmp/ob_log", "a");
+	 fprintf(fp, "NestLevel: %d  ObStatus: %d  HandlerName: %s\n", OG(ob_nesting_level), status, OG(active_ob_buffer).handler_name);
+	 fclose(fp);
+ }
+#endif
+	
+	if (OG(active_ob_buffer).internal_output_handler) {
+		final_buffer = OG(active_ob_buffer).internal_output_handler_buffer;
+		final_buffer_length = OG(active_ob_buffer).internal_output_handler_buffer_size;
+		OG(active_ob_buffer).internal_output_handler(OG(active_ob_buffer).buffer, OG(active_ob_buffer).text_length, &final_buffer, &final_buffer_length, status TSRMLS_CC);
+	} else if (OG(active_ob_buffer).output_handler) {
+		zval **params[2];
+		zval *orig_buffer;
+		zval *z_status;
+
+		ALLOC_INIT_ZVAL(orig_buffer);
+		ZVAL_STRINGL(orig_buffer, OG(active_ob_buffer).buffer, OG(active_ob_buffer).text_length, 1);
+
+		ALLOC_INIT_ZVAL(z_status);
+		ZVAL_LONG(z_status, status);
+
+		params[0] = &orig_buffer;
+		params[1] = &z_status;
+		OG(ob_lock) = 1;
+
+		if (call_user_function_ex(CG(function_table), NULL, OG(active_ob_buffer).output_handler, &alternate_buffer, 2, params, 1, NULL TSRMLS_CC)==SUCCESS) {
+			if (alternate_buffer && !(Z_TYPE_P(alternate_buffer)==IS_BOOL && Z_BVAL_P(alternate_buffer)==0)) {
+				convert_to_string_ex(&alternate_buffer);
+				final_buffer = Z_STRVAL_P(alternate_buffer);
+				final_buffer_length = Z_STRLEN_P(alternate_buffer);
+			}
+		}
+		OG(ob_lock) = 0;
+		if (!just_flush) {
+			zval_ptr_dtor(&OG(active_ob_buffer).output_handler);
+		}
+		zval_ptr_dtor(&orig_buffer);
+		zval_ptr_dtor(&z_status);
+	}
 
-/* {{{ SUCCESS|FAILURE php_output_discard(TSRMLS_D)
-	Discards the most recent output handlers buffer and pops it off the stack if the handler is removable */
-PHPAPI int php_output_discard(TSRMLS_D)
-{
-	if (php_output_stack_pop(PHP_OUTPUT_POP_DISCARD|PHP_OUTPUT_POP_TRY TSRMLS_CC)) {
-		return SUCCESS;
+	if (!final_buffer) {
+		final_buffer = OG(active_ob_buffer).buffer;
+		final_buffer_length = OG(active_ob_buffer).text_length;
 	}
-	return FAILURE;
-}
-/* }}} */
 
-/* {{{ void php_output_discard_all(TSRMLS_D)
-	Discard all output handlers and buffers without regard whether a handler is removable */
-PHPAPI void php_output_discard_all(TSRMLS_D)
-{
-	while (OG(active)) {
-		php_output_stack_pop(PHP_OUTPUT_POP_DISCARD|PHP_OUTPUT_POP_FORCE TSRMLS_CC);
+	if (OG(ob_nesting_level)==1) { /* end buffering */
+		if (SG(headers_sent) && !SG(request_info).headers_only) {
+			OG(php_body_write) = php_ub_body_write_no_header;
+		} else {
+			OG(php_body_write) = php_ub_body_write;
+		}
 	}
-}
-/* }}} */
 
-/* {{{ int php_output_get_level(TSRMLS_D)
-	Get output buffering level, ie. how many output handlers the stack contains */
-PHPAPI int php_output_get_level(TSRMLS_D)
-{
-	return OG(active) ? zend_stack_count(OG(handlers)) : 0;
-}
-/* }}} */
+	to_be_destroyed_buffer = OG(active_ob_buffer).buffer;
+	to_be_destroyed_handler_name = OG(active_ob_buffer).handler_name;
+	if (OG(active_ob_buffer).internal_output_handler
+		&& (final_buffer != OG(active_ob_buffer).internal_output_handler_buffer)
+		&& (final_buffer != OG(active_ob_buffer).buffer)) {
+		to_be_destroyed_handled_output[0] = final_buffer;
+	}
 
-/* {{{ SUCCESS|FAILURE php_output_get_contents(zval *z TSRMLS_DC)
-	Get the contents of the active output handlers buffer */
-PHPAPI int php_output_get_contents(zval *p TSRMLS_DC)
-{
-	if (OG(active)) {
-		ZVAL_STRINGL(p, OG(active)->buffer.data, OG(active)->buffer.used, 1);
-		return SUCCESS;
-	} else {
-		ZVAL_NULL(p);
-		return FAILURE;
+	if (!just_flush) {
+		if (OG(active_ob_buffer).internal_output_handler) {
+			to_be_destroyed_handled_output[1] = OG(active_ob_buffer).internal_output_handler_buffer;
+		}
 	}
-}
+	if (OG(ob_nesting_level)>1) { /* restore previous buffer */
+		zend_stack_top(&OG(ob_buffers), (void **) &prev_ob_buffer_p);
+		orig_ob_buffer = OG(active_ob_buffer);
+		OG(active_ob_buffer) = *prev_ob_buffer_p;
+		zend_stack_del_top(&OG(ob_buffers));
+		if (!just_flush && OG(ob_nesting_level)==2) { /* destroy the stack */
+			zend_stack_destroy(&OG(ob_buffers));
+		}
+	}
+	OG(ob_nesting_level)--;
 
-/* {{{ SUCCESS|FAILURE php_output_get_length(zval *z TSRMLS_DC)
-	Get the length of the active output handlers buffer */
-PHPAPI int php_output_get_length(zval *p TSRMLS_DC)
-{
-	if (OG(active)) {
-		ZVAL_LONG(p, OG(active)->buffer.used);
-		return SUCCESS;
-	} else {
-		ZVAL_NULL(p);
-		return FAILURE;
+	if (send_buffer) {
+		if (just_flush) { /* if flush is called prior to proper end, ensure presence of NUL */
+			final_buffer[final_buffer_length] = '\0';
+		}
+		OG(php_body_write)(final_buffer, final_buffer_length TSRMLS_CC);
 	}
-}
-/* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_handler_start_default(TSRMLS_D)
-	Start a "default output handler" */
-PHPAPI int php_output_start_default(TSRMLS_D)
-{
-	php_output_handler *handler;
-	
-	handler = php_output_handler_create_internal(OG(default_output_handler_name), php_output_handler_default_func, 0, PHP_OUTPUT_HANDLER_STDFLAGS TSRMLS_CC);
-	if (SUCCESS == php_output_handler_start(handler TSRMLS_CC)) {
-		return SUCCESS;
+	if (just_flush) { /* we restored the previous ob, return to the current */
+		if (prev_ob_buffer_p) {
+			zend_stack_push(&OG(ob_buffers), &OG(active_ob_buffer), sizeof(php_ob_buffer));
+			OG(active_ob_buffer) = orig_ob_buffer;
+		}
+		OG(ob_nesting_level)++;
 	}
-	php_output_handler_free(&handler TSRMLS_CC);
-	return FAILURE;
-}
-/* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_handler_start_devnull(TSRMLS_D)
-	Start a "null output handler" */
-PHPAPI int php_output_start_devnull(TSRMLS_D)
-{
-	php_output_handler *handler;
-	
-	handler = php_output_handler_create_internal(OG(devnull_output_handler_name), php_output_handler_devnull_func, PHP_OUTPUT_HANDLER_DEFAULT_SIZE, 0 TSRMLS_CC);
-	if (SUCCESS == php_output_handler_start(handler TSRMLS_CC)) {
-		return SUCCESS;
+	if (alternate_buffer) {
+		zval_ptr_dtor(&alternate_buffer);
 	}
-	php_output_handler_free(&handler TSRMLS_CC);
-	return FAILURE;
-}
-/* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_start_user(zval *handler, size_t chunk_size, int flags TSRMLS_DC)
-	Start a user level output handler */
-PHPAPI int php_output_start_user(zval *output_handler, size_t chunk_size, int flags TSRMLS_DC)
-{
-	php_output_handler *handler;
-	
-	if (output_handler) {
-		handler = php_output_handler_create_user(output_handler, chunk_size, flags TSRMLS_CC);
+	if (status & PHP_OUTPUT_HANDLER_END) {
+		efree(to_be_destroyed_handler_name);
+	}
+	if (!just_flush) {
+		efree(to_be_destroyed_buffer);
 	} else {
-		handler = php_output_handler_create_internal(OG(default_output_handler_name), php_output_handler_default_func, chunk_size, flags TSRMLS_CC);
+		OG(active_ob_buffer).text_length = 0;
+		OG(active_ob_buffer).status |= PHP_OUTPUT_HANDLER_START;
+		OG(php_body_write) = php_b_body_write;
 	}
-	if (SUCCESS == php_output_handler_start(handler TSRMLS_CC)) {
-		return SUCCESS;
+	if (to_be_destroyed_handled_output[0]) {
+		efree(to_be_destroyed_handled_output[0]);
 	}
-	php_output_handler_free(&handler TSRMLS_CC);
-	return FAILURE;
-}
-/* }}} */
-
-/* {{{ SUCCESS|FAILURE php_output_start_internal(zval *name, php_output_handler_func_t handler, size_t chunk_size, int flags TSRMLS_DC)
-	Start an internal output handler that does not have to maintain a non-global state */
-PHPAPI int php_output_start_internal(zval *name, php_output_handler_func_t output_handler, size_t chunk_size, int flags TSRMLS_DC)
-{
-	php_output_handler *handler;
-	
-	handler = php_output_handler_create_internal(name, php_output_handler_compat_func, chunk_size, flags TSRMLS_CC);
-	php_output_handler_set_context(handler, output_handler, NULL TSRMLS_CC);
-	if (SUCCESS == php_output_handler_start(handler TSRMLS_CC)) {
-		return SUCCESS;
+	if (to_be_destroyed_handled_output[1]) {
+		efree(to_be_destroyed_handled_output[1]);
 	}
-	php_output_handler_free(&handler TSRMLS_CC);
-	return FAILURE;
 }
 /* }}} */
 
-/* {{{ php_output_handler *php_output_handler_create_user(zval *handler, size_t chunk_size, int flags TSRMLS_DC)
-	Create a user level output handler */
-PHPAPI php_output_handler *php_output_handler_create_user(zval *output_handler, size_t chunk_size, int flags TSRMLS_DC)
+/* {{{ php_end_ob_buffers
+ * End output buffering (all buffers) */
+PHPAPI void php_end_ob_buffers(zend_bool send_buffer TSRMLS_DC)
 {
-	zval *handler_name = NULL;
-	char *tmp_name = NULL;
-	php_output_handler *handler = NULL;
-	php_output_handler_alias_ctor_t *alias = NULL;
-	php_output_handler_user_func_t *user = NULL;
-	
-	switch (Z_TYPE_P(output_handler)) {
-		case IS_NULL:
-			handler = php_output_handler_create_internal(OG(default_output_handler_name), php_output_handler_default_func, chunk_size, flags TSRMLS_CC);
-			break;
-		case IS_STRING:
-			if (Z_STRLEN_P(output_handler) && (alias = php_output_handler_alias(output_handler TSRMLS_CC))) {
-				handler = (*alias)(output_handler, chunk_size, flags TSRMLS_CC);
-				break;
-			}
-		default:
-			user = ecalloc(1, sizeof(php_output_handler_user_func_t));
-			MAKE_STD_ZVAL(handler_name);
-			if (SUCCESS == zend_fcall_info_init(output_handler, 0, &user->fci, &user->fcc, &tmp_name, NULL TSRMLS_CC)) {
-				ZVAL_STRING(handler_name, tmp_name, 1);
-				handler = php_output_handler_init(handler_name, chunk_size, (flags & ~0xf) | PHP_OUTPUT_HANDLER_USER);
-				Z_ADDREF_P(output_handler);
-				user->zoh = output_handler;
-				handler->func.user = user;
-			} else {
-				/* TODO(helly) log the rror? */
-				efree(user);
-			}
-			if (tmp_name) {
-				efree(tmp_name);
-			}
-			zval_ptr_dtor(&handler_name);
+	while (OG(ob_nesting_level)!=0) {
+		php_end_ob_buffer(send_buffer, 0 TSRMLS_CC);
 	}
-	
-	return handler;
 }
 /* }}} */
 
-/* {{{ php_output_handler *php_output_handler_create_internal(zval *name, php_output_handler_context_func_t handler, size_t chunk_size, int flags TSRMLS_DC)
-	Create an internal output handler that can maintain a non-global state */
-PHPAPI php_output_handler *php_output_handler_create_internal(zval *name, php_output_handler_context_func_t output_handler, size_t chunk_size, int flags TSRMLS_DC)
+/* {{{ php_start_implicit_flush
+ */
+PHPAPI void php_start_implicit_flush(TSRMLS_D)
 {
-	php_output_handler *handler;
-	
-	handler = php_output_handler_init(name, chunk_size, (flags & ~0xf) | PHP_OUTPUT_HANDLER_INTERNAL);
-	handler->func.internal = output_handler;
-	
-	return handler;
+	OG(implicit_flush)=1;
 }
+/* }}} */
 
-/* {{{ void php_output_handler_set_context(php_output_handler *handler, void *opaq, void (*dtor)(void* TSRMLS_DC) TSRMLS_DC)
-	Set the context/state of an output handler. Calls the dtor of the previous context if there is one */
-PHPAPI void php_output_handler_set_context(php_output_handler *handler, void *opaq, void (*dtor)(void* TSRMLS_DC) TSRMLS_DC)
+/* {{{ php_end_implicit_flush
+ */
+PHPAPI void php_end_implicit_flush(TSRMLS_D)
 {
-	if (handler->dtor && handler->opaq) {
-		handler->dtor(handler->opaq TSRMLS_CC);
-	}
-	handler->dtor = dtor;
-	handler->opaq = opaq;
+	OG(implicit_flush)=0;
 }
 /* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_handler_start(php_output_handler *handler TSRMLS_DC)
-	Starts the set up output handler and pushes it on top of the stack. Checks for any conflicts regarding the output handler to start */
-PHPAPI int php_output_handler_start(php_output_handler *handler TSRMLS_DC)
+/* {{{ php_ob_set_internal_handler
+ */
+PHPAPI void php_ob_set_internal_handler(php_output_handler_func_t internal_output_handler, uint buffer_size, char *handler_name, zend_bool erase TSRMLS_DC)
 {
-	HashPosition pos;
-	HashTable *rconflicts;
-	php_output_handler_conflict_check_t *conflict;
-	
-	if (php_output_lock_error(PHP_OUTPUT_HANDLER_START TSRMLS_CC) || !handler) {
-		return FAILURE;
-	}
-	if (SUCCESS == zend_hash_find(&php_output_handler_conflicts, Z_STRVAL_P(handler->name), Z_STRLEN_P(handler->name)+1, (void *) &conflict)) {
-		if (SUCCESS != (*conflict)(handler->name TSRMLS_CC)) {
-			return FAILURE;
-		}
+	if (OG(ob_nesting_level)==0 || OG(active_ob_buffer).internal_output_handler || strcmp(OG(active_ob_buffer).handler_name, OB_DEFAULT_HANDLER_NAME)) {
+		php_start_ob_buffer(NULL, buffer_size, erase TSRMLS_CC);
 	}
-	if (SUCCESS == zend_hash_find(&php_output_handler_reverse_conflicts, Z_STRVAL_P(handler->name), Z_STRLEN_P(handler->name)+1, (void *) &rconflicts)) {
-		for (	zend_hash_internal_pointer_reset_ex(rconflicts, &pos);
-				zend_hash_get_current_data_ex(rconflicts, (void *) &conflict, &pos) == SUCCESS;
-				zend_hash_move_forward_ex(rconflicts, &pos)) {
-			if (SUCCESS != (*conflict)(handler->name TSRMLS_CC)) {
-				return FAILURE;
-			}
-		}
-	}
-	/* zend_stack_push never returns SUCCESS but FAILURE or stack level */
-	if (FAILURE == (handler->level = zend_stack_push(OG(handlers), &handler, sizeof(php_output_handler *)))) {
-		return FAILURE;
+
+	OG(active_ob_buffer).internal_output_handler = internal_output_handler;
+	OG(active_ob_buffer).internal_output_handler_buffer = (char *) emalloc(buffer_size);
+	OG(active_ob_buffer).internal_output_handler_buffer_size = buffer_size;
+	if (OG(active_ob_buffer).handler_name) {
+		efree(OG(active_ob_buffer).handler_name);
 	}
-	OG(active) = handler;
-	return SUCCESS;
+	OG(active_ob_buffer).handler_name = estrdup(handler_name);
+	OG(active_ob_buffer).erase = erase;
 }
 /* }}} */
 
-/* {{{ int php_output_handler_started(zval *name TSRMLS_DC)
-	Check whether a certain output handler is in use */
-PHPAPI int php_output_handler_started(zval *name TSRMLS_DC)
+/*
+ * Output buffering - implementation
+ */
+
+/* {{{ php_ob_allocate
+ */
+static inline void php_ob_allocate(uint text_length TSRMLS_DC)
 {
-	php_output_handler **handlers;
-	int i, count = php_output_get_level(TSRMLS_C);
-	
-	if (count) {
-		handlers = *(php_output_handler ***) zend_stack_base(OG(handlers));
-		
-		for (i = 0; i < count; ++i) {
-			if (!zend_binary_zval_strcmp(handlers[i]->name, name)) {
-				return 1;
-			}
+	uint new_len = OG(active_ob_buffer).text_length + text_length;
+
+	if (OG(active_ob_buffer).size < new_len) {
+		uint buf_size = OG(active_ob_buffer).size;
+		while (buf_size <= new_len) {
+			buf_size += OG(active_ob_buffer).block_size;
 		}
+
+		OG(active_ob_buffer).buffer = (char *) erealloc(OG(active_ob_buffer).buffer, buf_size+1);
+		OG(active_ob_buffer).size = buf_size;
 	}
-	
-	return 0;
+	OG(active_ob_buffer).text_length = new_len;
 }
 /* }}} */
 
-/* {{{ int php_output_handler_conflict(zval *handler_new, zval *handler_old TSRMLS_DC)
-	Check whether a certain handler is in use and issue a warning that the new handler would conflict with the already used one */
-PHPAPI int php_output_handler_conflict(zval *handler_new, zval *handler_set TSRMLS_DC)
+/* {{{ php_ob_init_conflict
+ * Returns 1 if handler_set is already used and generates error message
+ */
+PHPAPI int php_ob_init_conflict(char *handler_new, char *handler_set TSRMLS_DC)
 {
-	if (php_output_handler_started(handler_set TSRMLS_CC)) {
-		if (zend_binary_zval_strcmp(handler_new, handler_set)) {
-			php_error_docref("ref.outcontrol" TSRMLS_CC, E_WARNING, "output handler '%s' conflicts with '%s'", Z_STRVAL_P(handler_new), Z_STRVAL_P(handler_set));
-		} else {
-			php_error_docref("ref.outcontrol" TSRMLS_CC, E_WARNING, "output handler '%s' cannot be used twice", Z_STRVAL_P(handler_new));
-		}
+	if (php_ob_handler_used(handler_set TSRMLS_CC)) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_WARNING, "output handler '%s' conflicts with '%s'", handler_new, handler_set);
 		return 1;
 	}
 	return 0;
 }
 /* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_handler_conflict_register(zval *name, php_output_handler_conflict_check_t check_func TSRMLS_DC)
-	Register a conflict checking function on MINIT */
-PHPAPI int php_output_handler_conflict_register(zval *name, php_output_handler_conflict_check_t check_func TSRMLS_DC)
+/* {{{ php_ob_init_named
+ */
+static int php_ob_init_named(uint initial_size, uint block_size, char *handler_name, zval *output_handler, uint chunk_size, zend_bool erase TSRMLS_DC)
 {
-	if (!EG(current_module)) {
-		zend_error(E_ERROR, "Cannot register an output handler conflict outside of MINIT");
-		return FAILURE;
-	}
-	return zend_hash_update(&php_output_handler_conflicts, Z_STRVAL_P(name), Z_STRLEN_P(name)+1, &check_func, sizeof(php_output_handler_conflict_check_t *), NULL);
-}
-/* }}} */
+	php_ob_buffer tmp_buf;
 
-/* {{{ SUCCESS|FAILURE php_output_handler_reverse_conflict_register(zval *name, php_output_handler_conflict_check_t check_func TSRMLS_DC)
-	Register a reverse conflict checking function on MINIT */
-PHPAPI int php_output_handler_reverse_conflict_register(zval *name, php_output_handler_conflict_check_t check_func TSRMLS_DC)
-{
-	HashTable rev, *rev_ptr = NULL;
-	
-	if (!EG(current_module)) {
-		zend_error(E_ERROR, "Cannot register a reverse output handler conflict outside of MINIT");
+	if (output_handler && !zend_is_callable(output_handler, 0, NULL TSRMLS_CC)) {
 		return FAILURE;
 	}
-	if (SUCCESS == zend_hash_find(&php_output_handler_reverse_conflicts, Z_STRVAL_P(name), Z_STRLEN_P(name)+1, (void *) &rev_ptr)) {
-		return zend_hash_next_index_insert(rev_ptr, &check_func, sizeof(php_output_handler_conflict_check_t *), NULL);
-	} else {
-		zend_hash_init(&rev, 1, NULL, NULL, 1);
-		if (SUCCESS != zend_hash_next_index_insert(&rev, &check_func, sizeof(php_output_handler_conflict_check_t *), NULL)) {
-			zend_hash_destroy(&rev);
+	
+	tmp_buf.block_size = block_size;
+	tmp_buf.size = initial_size;
+	tmp_buf.buffer = (char *) emalloc(initial_size+1);
+	tmp_buf.text_length = 0;
+	tmp_buf.output_handler = output_handler;
+	tmp_buf.chunk_size = chunk_size;
+	tmp_buf.status = 0;
+	tmp_buf.internal_output_handler = NULL;
+	tmp_buf.internal_output_handler_buffer = NULL;
+	tmp_buf.internal_output_handler_buffer_size = 0;
+	tmp_buf.handler_name = estrdup(handler_name&&handler_name[0]?handler_name:OB_DEFAULT_HANDLER_NAME);
+	tmp_buf.erase = erase;
+
+	if (OG(ob_nesting_level)>0) {
+#if HAVE_ZLIB && !defined(COMPILE_DL_ZLIB)
+		if (!strncmp(handler_name, "ob_gzhandler", sizeof("ob_gzhandler")) && php_ob_gzhandler_check(TSRMLS_C)) {
 			return FAILURE;
 		}
-		if (SUCCESS != zend_hash_update(&php_output_handler_reverse_conflicts, Z_STRVAL_P(name), Z_STRLEN_P(name)+1, &rev, sizeof(HashTable), NULL)) {
-			zend_hash_destroy(&rev);
-			return FAILURE;
+#endif
+		if (OG(ob_nesting_level)==1) { /* initialize stack */
+			zend_stack_init(&OG(ob_buffers));
 		}
-		return SUCCESS;
+		zend_stack_push(&OG(ob_buffers), &OG(active_ob_buffer), sizeof(php_ob_buffer));
 	}
+	OG(ob_nesting_level)++;
+	OG(active_ob_buffer) = tmp_buf;
+	OG(php_body_write) = php_b_body_write;
+	return SUCCESS;
 }
 /* }}} */
 
-/* {{{ php_output_handler_alias_ctor_t php_output_handler_alias(zval *name TSRMLS_DC)
-	Get an internal output handler for a user handler if it exists */
-PHPAPI php_output_handler_alias_ctor_t *php_output_handler_alias(zval *name TSRMLS_DC)
+/* {{{ php_ob_handler_from_string
+ * Create zval output handler from string 
+ */
+static zval* php_ob_handler_from_string(const char *handler_name, int len TSRMLS_DC)
 {
-	php_output_handler_alias_ctor_t *func = NULL;
-	
-	zend_hash_find(&php_output_handler_aliases, Z_STRVAL_P(name), Z_STRLEN_P(name)+1, (void *) &func);
-	return func;
-}
-/* }}} */
+	zval *output_handler;
 
-/* {{{ SUCCESS|FAILURE php_output_handler_alias_register(zval *name, php_output_handler_alias_ctor_t func TSRMLS_DC)
-	Registers an internal output handler as alias for a user handler */
-PHPAPI int php_output_handler_alias_register(zval *name, php_output_handler_alias_ctor_t func TSRMLS_DC)
-{
-	if (!EG(current_module)) {
-		zend_error(E_ERROR, "Cannot register an output handler alias outside of MINIT");
-		return FAILURE;
-	}
-	return zend_hash_update(&php_output_handler_aliases, Z_STRVAL_P(name), Z_STRLEN_P(name)+1, &func, sizeof(php_output_handler_alias_ctor_t *), NULL);
+	ALLOC_INIT_ZVAL(output_handler);
+	Z_STRLEN_P(output_handler) = len;
+	Z_STRVAL_P(output_handler) = estrndup(handler_name, len);
+	Z_TYPE_P(output_handler) = IS_STRING;
+	return output_handler;
 }
 /* }}} */
 
-/* {{{ SUCCESS|FAILURE php_output_handler_hook(php_output_handler_hook_t type, void *arg TSMRLS_DC)
-	Output handler hook for output handler functions to check/modify the current handlers abilities */
-PHPAPI int php_output_handler_hook(php_output_handler_hook_t type, void *arg TSRMLS_DC)
+/* {{{ php_ob_init
+ */
+static int php_ob_init(uint initial_size, uint block_size, zval *output_handler, uint chunk_size, zend_bool erase TSRMLS_DC)
 {
-	if (OG(running)) {
-		switch (type) {
-			case PHP_OUTPUT_HANDLER_HOOK_GET_OPAQ:
-				*(void ***) arg = &OG(running)->opaq;
-				return SUCCESS;
-			case PHP_OUTPUT_HANDLER_HOOK_GET_FLAGS:
-				*(int *) arg = OG(running)->flags;
-				return SUCCESS;
-			case PHP_OUTPUT_HANDLER_HOOK_GET_LEVEL:
-				*(int *) arg = OG(running)->level;
-			case PHP_OUTPUT_HANDLER_HOOK_IMMUTABLE:
-				OG(running)->flags &= ~(PHP_OUTPUT_HANDLER_REMOVABLE|PHP_OUTPUT_HANDLER_CLEANABLE);
-				return SUCCESS;
-			case PHP_OUTPUT_HANDLER_HOOK_DISABLE:
-				OG(running)->flags |= PHP_OUTPUT_HANDLER_DISABLED;
-				return SUCCESS;
-			default:
-				break;
+	int result = FAILURE, handler_len, len;
+	char *handler_name, *next_handler_name;
+	HashPosition pos;
+	zval **tmp;
+	zval *handler_zval;
+
+	if (output_handler && output_handler->type == IS_STRING) {
+		handler_name = Z_STRVAL_P(output_handler);
+		handler_len  = Z_STRLEN_P(output_handler);
+
+		result = SUCCESS;
+		if (handler_len && handler_name[0] != '\0') {
+			while ((next_handler_name=strchr(handler_name, ',')) != NULL) {
+				len = next_handler_name-handler_name;
+				next_handler_name = estrndup(handler_name, len);
+				handler_zval = php_ob_handler_from_string(next_handler_name, len TSRMLS_CC);
+				result = php_ob_init_named(initial_size, block_size, next_handler_name, handler_zval, chunk_size, erase TSRMLS_CC);
+				if (result != SUCCESS) {
+					zval_dtor(handler_zval);
+					FREE_ZVAL(handler_zval);
+				}
+				handler_name += len+1;
+				handler_len -= len+1;
+				efree(next_handler_name);
+			}
+		}
+		if (result == SUCCESS) {
+			handler_zval = php_ob_handler_from_string(handler_name, handler_len TSRMLS_CC);
+			result = php_ob_init_named(initial_size, block_size, handler_name, handler_zval, chunk_size, erase TSRMLS_CC);
+			if (result != SUCCESS) {
+				zval_dtor(handler_zval);
+				FREE_ZVAL(handler_zval);
+			}
+		}
+	} else if (output_handler && output_handler->type == IS_ARRAY) {
+		/* do we have array(object,method) */
+		if (zend_is_callable(output_handler, 0, &handler_name TSRMLS_CC)) {
+			SEPARATE_ZVAL(&output_handler);
+			Z_ADDREF_P(output_handler);
+			result = php_ob_init_named(initial_size, block_size, handler_name, output_handler, chunk_size, erase TSRMLS_CC);
+			efree(handler_name);
+		} else {
+			efree(handler_name);
+			/* init all array elements recursively */
+			zend_hash_internal_pointer_reset_ex(Z_ARRVAL_P(output_handler), &pos);
+			while (zend_hash_get_current_data_ex(Z_ARRVAL_P(output_handler), (void **)&tmp, &pos) == SUCCESS) {
+				result = php_ob_init(initial_size, block_size, *tmp, chunk_size, erase TSRMLS_CC);
+				if (result == FAILURE) {
+					break;
+				}
+				zend_hash_move_forward_ex(Z_ARRVAL_P(output_handler), &pos);
+			}
 		}
+	} else if (output_handler && output_handler->type == IS_OBJECT) {
+		/* do we have callable object */
+		if (zend_is_callable(output_handler, 0, &handler_name TSRMLS_CC)) {
+			SEPARATE_ZVAL(&output_handler);
+			Z_ADDREF_P(output_handler);
+			result = php_ob_init_named(initial_size, block_size, handler_name, output_handler, chunk_size, erase TSRMLS_CC);
+			efree(handler_name);
+		} else {
+			efree(handler_name);
+			php_error_docref(NULL TSRMLS_CC, E_ERROR, "No method name given: use ob_start(array($object,'method')) to specify instance $object and the name of a method of class %s to use as output handler", Z_OBJCE_P(output_handler)->name);
+			result = FAILURE;
+		}
+	} else {
+		result = php_ob_init_named(initial_size, block_size, OB_DEFAULT_HANDLER_NAME, NULL, chunk_size, erase TSRMLS_CC);
 	}
-	return FAILURE;
+	return result;
 }
 /* }}} */
 
-/* {{{ void php_output_handler_dtor(php_output_handler *handler TSRMLS_DC)
-	Destroy an output handler */
-PHPAPI void php_output_handler_dtor(php_output_handler *handler TSRMLS_DC)
+/* {{{ php_ob_list_each
+ */
+static int php_ob_list_each(php_ob_buffer *ob_buffer, zval *ob_handler_array) 
 {
-	zval_ptr_dtor(&handler->name);
-	STR_FREE(handler->buffer.data);
-	if (handler->flags & PHP_OUTPUT_HANDLER_USER) {
-		zval_ptr_dtor(&handler->func.user->zoh);
-		efree(handler->func.user);
-	}
-	if (handler->dtor && handler->opaq) {
-		handler->dtor(handler->opaq TSRMLS_CC);
-	}
-	memset(handler, 0, sizeof(*handler));
+	add_next_index_string(ob_handler_array, ob_buffer->handler_name, 1);
+	return 0;
 }
 /* }}} */
 
-/* {{{ void php_output_handler_free(php_output_handler **handler TSMRLS_DC)
-	Destroy and free an output handler */
-PHPAPI void php_output_handler_free(php_output_handler **h TSRMLS_DC)
+/* {{{ proto false|array ob_list_handlers()
+ *  List all output_buffers in an array 
+ */
+PHP_FUNCTION(ob_list_handlers)
 {
-	if (*h) {
-		php_output_handler_dtor(*h TSRMLS_CC);
-		efree(*h);
-		*h = NULL;
+	if (zend_parse_parameters_none() == FAILURE) {
+		return;
 	}
-}
-/* }}} */
-
-/* void php_output_set_implicit_flush(int enabled TSRMLS_DC)
-	Enable or disable implicit flush */
-PHPAPI void php_output_set_implicit_flush(int flush TSRMLS_DC)
-{
-	if (flush) {
-		OG(flags) |= PHP_OUTPUT_IMPLICITFLUSH;
-	} else {
-		OG(flags) &= ~PHP_OUTPUT_IMPLICITFLUSH;
+	
+	array_init(return_value);
+	if (OG(ob_nesting_level)) {
+		if (OG(ob_nesting_level)>1) {
+			zend_stack_apply_with_argument(&OG(ob_buffers), ZEND_STACK_APPLY_BOTTOMUP, (int (*)(void *element, void *)) php_ob_list_each, return_value);
+		}
+		php_ob_list_each(&OG(active_ob_buffer), return_value);
 	}
 }
 /* }}} */
 
-/* {{{ char *php_output_get_start_filename(TSRMLS_D)
-	Get the file name where output has started */
-PHPAPI char *php_output_get_start_filename(TSRMLS_D)
-{
-	return OG(output_start_filename);
-}
-/* }}} */
-
-/* {{{ int php_output_get_start_lineno(TSRMLS_D)
-	Get the line number where output has started */
-PHPAPI int php_output_get_start_lineno(TSRMLS_D)
-{
-	return OG(output_start_lineno);
-}
-/* }}} */
-
-/* {{{ static int php_output_lock_error(int op TSRMLS_DC)
-	Checks whether an unallowed operation is attempted from within the output handler and issues a fatal error */
-static inline int php_output_lock_error(int op TSRMLS_DC)
+/* {{{ php_ob_used_each
+ *  Sets handler_name to NULL is found
+ */
+static int php_ob_handler_used_each(php_ob_buffer *ob_buffer, char **handler_name) 
 {
-	/* if there's no ob active, ob has been stopped */
-	if (op && OG(active) && OG(running)) {
-		/* fatal error */
-		php_output_deactivate(TSRMLS_C);
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_ERROR, "Cannot use output buffering in output buffering display handlers");
+	if (!strcmp(ob_buffer->handler_name, *handler_name)) {
+		*handler_name = NULL;
 		return 1;
 	}
 	return 0;
 }
 /* }}} */
 
-/* {{{ static php_output_context *php_output_context_init(php_output_context *context, int op TSRMLS_DC)
-	Initialize a new output context */
-static inline php_output_context *php_output_context_init(php_output_context *context, int op TSRMLS_DC)
+/* {{{ php_ob_used
+ * returns 1 if given handler_name is used as output_handler
+ */
+PHPAPI int php_ob_handler_used(char *handler_name TSRMLS_DC)
 {
-	if (!context) {
-		context = emalloc(sizeof(php_output_context));
+	char *tmp = handler_name;
+
+	if (OG(ob_nesting_level)) {
+		if (!strcmp(OG(active_ob_buffer).handler_name, handler_name)) {
+			return 1;
+		}
+		if (OG(ob_nesting_level)>1) {
+			zend_stack_apply_with_argument(&OG(ob_buffers), ZEND_STACK_APPLY_BOTTOMUP, (int (*)(void *element, void *)) php_ob_handler_used_each, &tmp);
+		}
 	}
-	
-	memset(context, 0, sizeof(php_output_context));
-	TSRMLS_SET_CTX(context->tsrm_ls);
-	context->op = op;
-	
-	return context;
+	return tmp ? 0 : 1;
 }
 /* }}} */
 
-/* {{{ static void php_output_context_reset(php_output_context *context)
-	Reset an output context */
-static inline void php_output_context_reset(php_output_context *context)
+/* {{{ php_ob_append
+ */
+static inline void php_ob_append(const char *text, uint text_length TSRMLS_DC)
 {
-	int op = context->op;
-	php_output_context_dtor(context);
-	memset(context, 0, sizeof(php_output_context));
-	context->op = op;
-}
-/* }}} */
+	char *target;
+	int original_ob_text_length;
 
-/* {{{ static void php_output_context_swap(php_output_context *context)
-	Swap output contexts buffers */
-static inline void php_output_context_swap(php_output_context *context)
-{
-	if (context->in.free && context->in.data) {
-		efree(context->in.data);
-	}
-	context->in.data = context->out.data;
-	context->in.used = context->out.used;
-	context->in.free = context->out.free;
-	context->in.size = context->out.size;
-	context->out.data = NULL;
-	context->out.used = 0;
-	context->out.size = 0;
-}
-/* }}} */
+	original_ob_text_length=OG(active_ob_buffer).text_length;
 
-/* {{{ static void php_output_context_pass(php_output_context *context)
-	Pass input to output buffer */
-static inline void php_output_context_pass(php_output_context *context)
-{
-	context->out.data = context->in.data;
-	context->out.used = context->in.used;
-	context->out.size = context->in.size;
-	context->out.free = context->in.free;
-	context->in.data = NULL;
-	context->in.used = 0;
-	context->in.size = 0;
-}
-/* }}} */
+	php_ob_allocate(text_length TSRMLS_CC);
+	target = OG(active_ob_buffer).buffer+original_ob_text_length;
+	memcpy(target, text, text_length);
+	target[text_length]=0;
 
-/* {{{ static void php_output_context_dtor(php_output_context *context)
-	Destroy the contents of an output context */
-static inline void php_output_context_dtor(php_output_context *context)
-{
-	if (context->in.free && context->in.data) {
-		efree(context->in.data);
-		context->in.data = NULL;
-	}
-	if (context->out.free && context->out.data) {
-		efree(context->out.data);
-		context->out.data = NULL;
+ 	/* If implicit_flush is On or chunked buffering, send contents to next buffer and return. */
+	if (OG(active_ob_buffer).chunk_size
+		&& OG(active_ob_buffer).text_length >= OG(active_ob_buffer).chunk_size) {
+		
+		php_end_ob_buffer(1, 1 TSRMLS_CC);
+		return;
 	}
 }
 /* }}} */
 
-/* {{{ static php_output_handler *php_output_handler_init(zval *name, size_t chunk_size, int flags)
-	Allocates and initializes a php_output_handler structure */
-static inline php_output_handler *php_output_handler_init_ex(zval *name, size_t chunk_size, int flags TSRMLS_DC)
+#if 0
+static inline void php_ob_prepend(const char *text, uint text_length)
 {
-	php_output_handler *handler;
-	
-	handler = ecalloc(1, sizeof(php_output_handler));
-	Z_ADDREF_P(name);
-	handler->name = name;
-	handler->size = chunk_size;
-	handler->flags = flags;
-	handler->buffer.size = PHP_OUTPUT_HANDLER_INITBUF_SIZE(chunk_size);
-	handler->buffer.data = emalloc(handler->buffer.size);
-	
-	return handler;
-}
-/* }}} */
+	char *p, *start;
+	TSRMLS_FETCH();
 
-/* {{{ static int php_output_handler_appen(php_output_handler *handler, const php_output_buffer *buf TSRMLS_DC)
-	Appends input to the output handlers buffer and indicates whether the buffer does not have to be processed by the output handler */
-static inline int php_output_handler_append(php_output_handler *handler, const php_output_buffer *buf TSRMLS_DC)
-{
-	if (buf->used) {
-		OG(flags) |= PHP_OUTPUT_WRITTEN;
-		/* store it away */
-		if ((handler->buffer.size - handler->buffer.used) <= buf->used) {
-			size_t grow_int = PHP_OUTPUT_HANDLER_INITBUF_SIZE(handler->size);
-			size_t grow_buf = PHP_OUTPUT_HANDLER_INITBUF_SIZE(buf->used - (handler->buffer.size - handler->buffer.used));
-			size_t grow_max = MAX(grow_int, grow_buf);
-			
-			handler->buffer.data = erealloc(handler->buffer.data, handler->buffer.size + grow_max);
-			handler->buffer.size += grow_max;
-		}
-		memcpy(handler->buffer.data + handler->buffer.used, buf->data, buf->used);
-		handler->buffer.used += buf->used;
-	
-		/* chunked buffering */
-		if (handler->size && (handler->buffer.used >= handler->size)) {
-			/* store away errors and/or any intermediate output */
-			return OG(running) ? 1 : 0;
-		}
-	}
-	return 1;
-}
-/* }}} */
+	php_ob_allocate(text_length TSRMLS_CC);
 
-/* {{{ static php_output_handler_status_t php_output_handler_op(php_output_handler *handler, php_output_context *context)
-	Output handler operation dispatcher, applying context op to the php_output_handler handler */
-static inline php_output_handler_status_t php_output_handler_op(php_output_handler *handler, php_output_context *context)
-{
-	php_output_handler_status_t status;
-	int original_op = context->op;
-	PHP_OUTPUT_TSRMLS(context);
-	
-#if PHP_OUTPUT_DEBUG
-	fprintf(stderr, ">>> op(%d, "
-					"handler=%p, "
-					"name=%s, "
-					"flags=%d, "
-					"buffer.data=%s, "
-					"buffer.used=%zu, "
-					"buffer.size=%zu, "
-					"in.data=%s, "
-					"in.used=%zu)\n",
-			context->op,
-			handler,
-			Z_STRVAL_P(handler->name),
-			handler->flags,
-			handler->buffer.used?handler->buffer.data:"",
-			handler->buffer.used,
-			handler->buffer.size,
-			context->in.used?context->in.data:"",
-			context->in.used
-	);
-#endif
-	
-	if (php_output_lock_error(context->op TSRMLS_CC)) {
-		/* fatal error */
-		return PHP_OUTPUT_HANDLER_FAILURE;
-	}
-	
-	/* storable? */
-	if (php_output_handler_append(handler, &context->in TSRMLS_CC) && !context->op) {
-		status = PHP_OUTPUT_HANDLER_NO_DATA;
-	} else {
-		/* need to start? */
-		if (!(handler->flags & PHP_OUTPUT_HANDLER_STARTED)) {
-			context->op |= PHP_OUTPUT_HANDLER_START;
-		}
-		
-		OG(running) = handler;
-		if (handler->flags & PHP_OUTPUT_HANDLER_USER) {
-			zval *retval = NULL, *ob_data, *ob_mode;
-			
-			MAKE_STD_ZVAL(ob_data);
-			ZVAL_STRINGL(ob_data, handler->buffer.data, handler->buffer.used, 1);
-			MAKE_STD_ZVAL(ob_mode);
-			ZVAL_LONG(ob_mode, (long) context->op);
-			zend_fcall_info_argn(&handler->func.user->fci TSRMLS_CC, 2, &ob_data, &ob_mode);
-			
-#define PHP_OUTPUT_USER_SUCCESS(retval) (retval && !(Z_TYPE_P(retval) == IS_BOOL && Z_BVAL_P(retval)==0))
-			if (SUCCESS == zend_fcall_info_call(&handler->func.user->fci, &handler->func.user->fcc, &retval, NULL TSRMLS_CC) && PHP_OUTPUT_USER_SUCCESS(retval)) {
-				/* user handler may have returned TRUE */
-				status = PHP_OUTPUT_HANDLER_NO_DATA;
-				if (Z_TYPE_P(retval) != IS_BOOL) {
-					convert_to_string_ex(&retval);
-					if (Z_STRLEN_P(retval)) {
-						context->out.data = estrndup(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
-						context->out.used = Z_STRLEN_P(retval);
-						context->out.free = 1;
-						status = PHP_OUTPUT_HANDLER_SUCCESS;
-					}
-				}
-			} else {
-				/* call failed, pass internal buffer along */
-				status = PHP_OUTPUT_HANDLER_FAILURE;
-			}
-			
-			zend_fcall_info_argn(&handler->func.user->fci TSRMLS_CC, 0);
-			zval_ptr_dtor(&ob_data);
-			zval_ptr_dtor(&ob_mode);
-			if (retval) {
-				zval_ptr_dtor(&retval);
-			}
-			
-		} else {
-			
-			context->in.data = handler->buffer.data;
-			context->in.used = handler->buffer.used;
-			context->in.free = 0;
-			
-			if (SUCCESS == handler->func.internal(&handler->opaq, context)) {
-				if (context->out.used) {
-					status = PHP_OUTPUT_HANDLER_SUCCESS;
-				} else {
-					status = PHP_OUTPUT_HANDLER_NO_DATA;
-				}
-			} else {
-				status = PHP_OUTPUT_HANDLER_FAILURE;
-			}
-		}
-		handler->flags |= PHP_OUTPUT_HANDLER_STARTED;
-		OG(running) = NULL;
-	}
-	
-	switch (status) {
-		case PHP_OUTPUT_HANDLER_FAILURE:
-			/* disable this handler */
-			handler->flags |= PHP_OUTPUT_HANDLER_DISABLED;
-			/* discard any output */
-			if (context->out.data && context->out.free) {
-				efree(context->out.data);
-			}
-			/* returns handlers buffer */
-			context->out.data = handler->buffer.data;
-			context->out.used = handler->buffer.used;
-			context->out.free = 1;
-			handler->buffer.data = NULL;
-			handler->buffer.used = 0;
-			handler->buffer.size = 0;
-			break;
-		case PHP_OUTPUT_HANDLER_SUCCESS:
-			/* no more buffered data */
-			handler->buffer.used = 0;
-			break;
-		case PHP_OUTPUT_HANDLER_NO_DATA:
-			/* handler ate all */
-			php_output_context_reset(context);
-			break;
+	/* php_ob_allocate() may change OG(ob_buffer), so we can't initialize p&start earlier */
+	p = OG(ob_buffer)+OG(ob_text_length);
+	start = OG(ob_buffer);
+
+	while (--p>=start) {
+		p[text_length] = *p;
 	}
-	
-	context->op = original_op;
-	return status;
+	memcpy(OG(ob_buffer), text, text_length);
+	OG(ob_buffer)[OG(active_ob_buffer).text_length]=0;
 }
-/* }}} */
+#endif
 
 
-/* {{{ static void php_output_op(int op, const char *str, size_t len TSRMLS_DC)
-	Output op dispatcher, passes input and output handlers output through the output handler stack until it gets written to the SAPI */
-static inline void php_output_op(int op, const char *str, size_t len TSRMLS_DC)
+/* {{{ php_ob_get_buffer
+ * Return the current output buffer */
+PHPAPI int php_ob_get_buffer(zval *p TSRMLS_DC)
 {
-	php_output_context context;
-	php_output_handler **active;
-	int obh_cnt;
-	
-	if (php_output_lock_error(op TSRMLS_CC)) {
-		return;
-	}
-	
-	php_output_context_init(&context, op TSRMLS_CC);
-	
-	/*
-	 * broken up for better performance:
-	 *  - apply op to the one active handler; note that OG(active) might be popped off the stack on a flush
-	 *  - or apply op to the handler stack
-	 */
-	if (OG(active) && (obh_cnt = zend_stack_count(OG(handlers)))) {
-		context.in.data = (char *) str;
-		context.in.used = len;
-		
-		if (obh_cnt > 1) {
-			zend_stack_apply_with_argument(OG(handlers), ZEND_STACK_APPLY_TOPDOWN, php_output_stack_apply_op, &context);
-		} else if ((SUCCESS == zend_stack_top(OG(handlers), (void *) &active)) && (!((*active)->flags & PHP_OUTPUT_HANDLER_DISABLED))) {
-			php_output_handler_op(*active, &context);
-		} else {
-			php_output_context_pass(&context);
-		}
-	} else {
-		context.out.data = (char *) str;
-		context.out.used = len;
-	}
-	
-	if (context.out.data && context.out.used) {
-#if PHP_OUTPUT_DEBUG
-		fprintf(stderr, "::: sapi_write('%s', %zu)\n", context.out.data, context.out.used);
-#endif
-		if (!SG(headers_sent) && php_header(TSRMLS_C)) {
-			if (zend_is_compiling(TSRMLS_C)) {
-				OG(output_start_filename) = zend_get_compiled_filename(TSRMLS_C);
-				OG(output_start_lineno) = zend_get_compiled_lineno(TSRMLS_C);
-			} else if (zend_is_executing(TSRMLS_C)) {
-				OG(output_start_filename) = zend_get_executed_filename(TSRMLS_C);
-				OG(output_start_lineno) = zend_get_executed_lineno(TSRMLS_C);
-			}
-#if PHP_OUTPUT_DEBUG
-			fprintf(stderr, "!!! output started at: %s (%d)\n", OG(output_start_filename), OG(output_start_lineno));
-#endif
-		}
-		sapi_module.ub_write(context.out.data, context.out.used TSRMLS_CC);
-		if (OG(flags) & PHP_OUTPUT_IMPLICITFLUSH) {
-			sapi_flush(TSRMLS_C);
-		}
-		OG(flags) |= PHP_OUTPUT_SENT;
+	if (OG(ob_nesting_level)==0) {
+		return FAILURE;
 	}
-	php_output_context_dtor(&context);
+	ZVAL_STRINGL(p, OG(active_ob_buffer).buffer, OG(active_ob_buffer).text_length, 1);
+	return SUCCESS;
 }
 /* }}} */
 
-/* {{{ static int php_output_stack_apply_op(void *h, void *c)
-	Operation callback for the stack apply function */
-static int php_output_stack_apply_op(void *h, void *c)
+/* {{{ php_ob_get_length
+ * Return the size of the current output buffer */
+PHPAPI int php_ob_get_length(zval *p TSRMLS_DC)
 {
-	int was_disabled;
-	php_output_handler_status_t status;
-	php_output_handler *handler = *(php_output_handler **) h;
-	php_output_context *context = (php_output_context *) c;
-	
-	if ((was_disabled = (handler->flags & PHP_OUTPUT_HANDLER_DISABLED))) {
-		status = PHP_OUTPUT_HANDLER_FAILURE;
-	} else {
-		status = php_output_handler_op(handler, context);
-	}
-	
-	/*
-	 * handler ate all => break
-	 * handler returned data or failed resp. is disabled => continue
-	 */
-	switch (status) {
-		case PHP_OUTPUT_HANDLER_NO_DATA:
-			return 1;
-			
-		case PHP_OUTPUT_HANDLER_SUCCESS:
-			/* swap contexts buffers, unless this is the last handler in the stack */
-			if (handler->level) {
-				php_output_context_swap(context);
-			}
-			return 0;
-			
-		case PHP_OUTPUT_HANDLER_FAILURE:
-		default:
-			if (was_disabled) {
-				/* pass input along, if it's the last handler in the stack */
-				if (!handler->level) {
-					php_output_context_pass(context);
-				}
-			} else {
-				/* swap buffers, unless this is the last handler */
-				if (handler->level) {
-					php_output_context_swap(context);
-				}
-			}
-			return 0;
+	if (OG(ob_nesting_level) == 0) {
+		return FAILURE;
 	}
+	ZVAL_LONG(p, OG(active_ob_buffer).text_length);
+	return SUCCESS;
 }
 /* }}} */
 
-/* {{{ static int php_output_stack_apply_clean(void *h, void *c)
-	Clean callback for the stack apply function */
-static int php_output_stack_apply_clean(void *h, void *c)
-{
-	php_output_handler *handler = *(php_output_handler **) h;
-	php_output_context *context = (php_output_context *) c;
-	
-	handler->buffer.used = 0;
-	php_output_handler_op(handler, context);
-	php_output_context_reset(context);
-	return 0;
-}
-/* }}} */
+/*
+ * Wrapper functions - implementation
+ */
 
-/* {{{ static int php_output_stack_apply_list(void *h, void *z)
-	List callback for the stack apply function */
-static int php_output_stack_apply_list(void *h, void *z)
-{
-	php_output_handler *handler = *(php_output_handler **) h;
-	zval *array = (zval *) z;
-	
-	Z_ADDREF_P(handler->name);
-	add_next_index_zval(array, handler->name);
-	return 0;
-}
-/* }}} */
 
-/* {{{ static int php_output_stack_apply_status(void *h, void *z)
-	Status callback for the stack apply function */
-static int php_output_stack_apply_status(void *h, void *z)
+/* buffered output function */
+static int php_b_body_write(const char *str, uint str_length TSRMLS_DC)
 {
-	php_output_handler *handler = *(php_output_handler **) h;
-	zval *array = (zval *) z;
-	
-	add_next_index_zval(array, php_output_handler_status(handler, NULL));
-	
-	return 0;
+	php_ob_append(str, str_length TSRMLS_CC);
+	return str_length;
 }
-/* }}} */
 
-/* {{{ static zval *php_output_handler_status(php_output_handler *handler, zval *entry)
-	Returns an array with the status of the output handler */
-static inline zval *php_output_handler_status(php_output_handler *handler, zval *entry)
+/* {{{ php_ub_body_write_no_header
+ */
+PHPAPI int php_ub_body_write_no_header(const char *str, uint str_length TSRMLS_DC)
 {
-	if (!entry) {
-		MAKE_STD_ZVAL(entry);
-		array_init(entry);
+	int result;
+
+	if (OG(disable_output)) {
+		return 0;
+	}		
+
+	result = OG(php_header_write)(str, str_length TSRMLS_CC);
+
+	if (OG(implicit_flush)) {
+		sapi_flush(TSRMLS_C);
 	}
-	
-	Z_ADDREF_P(handler->name);
-	add_assoc_zval(entry, "name", handler->name);
-	add_assoc_long(entry, "type", (long) (handler->flags & 0xf));
-	add_assoc_long(entry, "flags", (long) handler->flags);
-	add_assoc_long(entry, "level", (long) handler->level);
-	add_assoc_long(entry, "chunk_size", (long) handler->size);
-	add_assoc_long(entry, "buffer_size", (long) handler->buffer.size);
-	add_assoc_long(entry, "buffer_used", (long) handler->buffer.used);
-	
-	return entry;
+
+	return result;
 }
 /* }}} */
 
-/* {{{ static int php_output_stack_pop(int flags TSRMLS_DC)
-	Pops an output handler off the stack */
-static inline int php_output_stack_pop(int flags TSRMLS_DC)
+/* {{{ php_ub_body_write
+ */
+PHPAPI int php_ub_body_write(const char *str, uint str_length TSRMLS_DC)
 {
-	php_output_context context;
-	php_output_handler **current, *orphan = OG(active);
-	
-	if (!orphan) {
-		if (!(flags & PHP_OUTPUT_POP_SILENT)) {
-			php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to %s buffer. No buffer to %s", (flags&PHP_OUTPUT_POP_DISCARD)?"discard":"send", (flags&PHP_OUTPUT_POP_DISCARD)?"discard":"send");
-		}
-		return 0;
-	} else if (!(flags & PHP_OUTPUT_POP_FORCE) && !(orphan->flags & PHP_OUTPUT_HANDLER_REMOVABLE)) {
-		if (!(flags & PHP_OUTPUT_POP_SILENT)) {
-			php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to %s buffer of %s (%d)", (flags&PHP_OUTPUT_POP_DISCARD)?"discard":"send", Z_STRVAL_P(orphan->name), orphan->level);
-		}
-		return 0;
-	} else {
-		php_output_context_init(&context, PHP_OUTPUT_HANDLER_FINAL TSRMLS_CC);
-		
-		/* don't run the output handler if it's disabled */
-		if (!(orphan->flags & PHP_OUTPUT_HANDLER_DISABLED)) {
-			/* didn't it start yet? */
-			if (!(orphan->flags & PHP_OUTPUT_HANDLER_STARTED)) {
-				context.op |= PHP_OUTPUT_HANDLER_START;
-			}
-			/* signal that we're cleaning up */
-			if (flags & PHP_OUTPUT_POP_DISCARD) {
-				context.op |= PHP_OUTPUT_HANDLER_CLEAN;
-				orphan->buffer.used = 0;
-			}
-			php_output_handler_op(orphan, &context);
+	int result = 0;
+
+	if (SG(request_info).headers_only) {
+		if(SG(headers_sent)) {
+			return 0;
 		}
-		
-		/* pop it off the stack */
-		zend_stack_del_top(OG(handlers));
-		if (SUCCESS == zend_stack_top(OG(handlers), (void *) &current)) {
-			OG(active) = *current;
-		} else {
-			OG(active) = NULL;
+		php_header(TSRMLS_C);
+		zend_bailout();
+	}
+	if (php_header(TSRMLS_C)) {
+		if (zend_is_compiling(TSRMLS_C)) {
+			OG(output_start_filename) = zend_get_compiled_filename(TSRMLS_C);
+			OG(output_start_lineno) = zend_get_compiled_lineno(TSRMLS_C);
+		} else if (zend_is_executing(TSRMLS_C)) {
+			OG(output_start_filename) = zend_get_executed_filename(TSRMLS_C);
+			OG(output_start_lineno) = zend_get_executed_lineno(TSRMLS_C);
 		}
-		
-		/* pass output along */
-		if (context.out.data && context.out.used && !(flags & PHP_OUTPUT_POP_DISCARD)) {
-			php_output_write(context.out.data, context.out.used TSRMLS_CC);
-		}
-		
-		/* destroy the handler (after write!) */
-		php_output_handler_free(&orphan TSRMLS_CC);
-		php_output_context_dtor(&context);
-		
-		return 1;
-	}
-}
-/* }}} */
 
-/* {{{ static SUCCESS|FAILURE php_output_handler_compat_func(void *ctx, php_output_context *)
-	php_output_handler_context_func_t for php_output_handler_func_t output handlers */
-static int php_output_handler_compat_func(void **handler_context, php_output_context *output_context)
-{
-	php_output_handler_func_t func = *(php_output_handler_func_t *) handler_context;
-	PHP_OUTPUT_TSRMLS(output_context);
-	
-	if (func) {
-		func(output_context->in.data, output_context->in.used, &output_context->out.data, &output_context->out.used, output_context->op TSRMLS_CC);
-		output_context->out.free = 1;
-		return SUCCESS;
+		OG(php_body_write) = php_ub_body_write_no_header;
+		result = php_ub_body_write_no_header(str, str_length TSRMLS_CC);
 	}
-	return FAILURE;
-}
-/* }}} */
-
-/* {{{ static SUCCESS|FAILURE php_output_handler_default_func(void *ctx, php_output_context *)
-	Default output handler */
-static int php_output_handler_default_func(void **handler_context, php_output_context *output_context)
-{
-	output_context->out.data = output_context->in.data;
-	output_context->out.used = output_context->in.used;
-	output_context->out.free = output_context->in.free;
-	output_context->in.data = NULL;
-	output_context->in.used = 0;
-	output_context->in.free = 0;
-	return SUCCESS;
-}
-/* }}} */
 
-/* {{{ static SUCCESS|FAILURE php_output_handler_devnull_func(void *ctx, php_output_context *)
-	Null output handler */
-static int php_output_handler_devnull_func(void **handler_context, php_output_context *output_context)
-{
-	return SUCCESS;
+	return result;
 }
 /* }}} */
 
 /*
- * USERLAND (nearly 1:1 of old output.c)
+ * HEAD support
  */
 
-/* {{{ proto bool ob_start([string|array user_function [, int chunk_size [, int flags]]]) U
+/* {{{ proto bool ob_start([ string|array user_function [, int chunk_size [, bool erase]]])
    Turn on Output Buffering (specifying an optional output handler). */
 PHP_FUNCTION(ob_start)
 {
-	zval *output_handler = NULL;
-	long chunk_size = 0;
-	long flags = PHP_OUTPUT_HANDLER_STDFLAGS;
-	
-	if (SUCCESS != zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|z/ll", &output_handler, &chunk_size, &flags)) {
-		RETURN_FALSE;
+	zval *output_handler=NULL;
+	long chunk_size=0;
+	zend_bool erase=1;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|zlb", &output_handler, &chunk_size, &erase) == FAILURE) {
+		return;
 	}
-	if (chunk_size < 0) {
+
+	if (chunk_size < 0)
 		chunk_size = 0;
-	}
-	
-	if (SUCCESS != php_output_start_user(output_handler, chunk_size, flags TSRMLS_CC)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to create buffer");
+
+	if (php_start_ob_buffer(output_handler, chunk_size, erase TSRMLS_CC)==FAILURE) {
 		RETURN_FALSE;
 	}
 	RETURN_TRUE;
 }
 /* }}} */
 
-/* {{{ proto bool ob_flush(void) U
+/* {{{ proto bool ob_flush(void)
    Flush (send) contents of the output buffer. The last buffer content is sent to next buffer */
 PHP_FUNCTION(ob_flush)
 {
 	if (zend_parse_parameters_none() == FAILURE) {
 		return;
 	}
-	
-	if (!OG(active)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to flush buffer. No buffer to flush");
+
+	if (!OG(ob_nesting_level)) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to flush buffer. No buffer to flush.");
 		RETURN_FALSE;
 	}
-	if (SUCCESS != php_output_flush(TSRMLS_C)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to flush buffer of %s (%d)", Z_STRVAL_P(OG(active)->name), OG(active)->level);
+	
+	if (!OG(active_ob_buffer).status && !OG(active_ob_buffer).erase) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to flush buffer %s.", OG(active_ob_buffer).handler_name);
 		RETURN_FALSE;
 	}
+	
+	php_end_ob_buffer(1, 1 TSRMLS_CC);
 	RETURN_TRUE;
 }
 /* }}} */
 
 
-/* {{{ proto bool ob_clean(void) U
+/* {{{ proto bool ob_clean(void)
    Clean (delete) the current output buffer */
 PHP_FUNCTION(ob_clean)
 {
@@ -1304,19 +791,22 @@ PHP_FUNCTION(ob_clean)
 		return;
 	}
 	
-	if (!OG(active)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer. No buffer to delete");
+	if (!OG(ob_nesting_level)) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer. No buffer to delete.");
 		RETURN_FALSE;
 	}
-	if (SUCCESS != php_output_clean(TSRMLS_C)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer of %s (%d)", Z_STRVAL_P(OG(active)->name), OG(active)->level);
+
+	if (!OG(active_ob_buffer).status && !OG(active_ob_buffer).erase) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer %s.", OG(active_ob_buffer).handler_name);
 		RETURN_FALSE;
 	}
+	
+	php_end_ob_buffer(0, 1 TSRMLS_CC);
 	RETURN_TRUE;
 }
 /* }}} */
 
-/* {{{ proto bool ob_end_flush(void) U
+/* {{{ proto bool ob_end_flush(void)
    Flush (send) the output buffer, and delete current output buffer */
 PHP_FUNCTION(ob_end_flush)
 {
@@ -1324,156 +814,238 @@ PHP_FUNCTION(ob_end_flush)
 		return;
 	}
 	
-	if (!OG(active)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete and flush buffer. No buffer to delete or flush");
+	if (!OG(ob_nesting_level)) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete and flush buffer. No buffer to delete or flush.");
 		RETURN_FALSE;
 	}
-	RETURN_BOOL(SUCCESS == php_output_end(TSRMLS_C));
+	if (OG(ob_nesting_level) && !OG(active_ob_buffer).status && !OG(active_ob_buffer).erase) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer %s.", OG(active_ob_buffer).handler_name);
+		RETURN_FALSE;
+	}
+	
+	php_end_ob_buffer(1, 0 TSRMLS_CC);
+	RETURN_TRUE;
 }
 /* }}} */
 
-/* {{{ proto bool ob_end_clean(void) U
+/* {{{ proto bool ob_end_clean(void)
    Clean the output buffer, and delete current output buffer */
 PHP_FUNCTION(ob_end_clean)
 {
 	if (zend_parse_parameters_none() == FAILURE) {
 		return;
 	}
-	
-	if (!OG(active)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer. No buffer to delete");
+		
+	if (!OG(ob_nesting_level)) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer. No buffer to delete.");
 		RETURN_FALSE;
 	}
-	RETURN_BOOL(SUCCESS == php_output_discard(TSRMLS_C));
+	if (OG(ob_nesting_level) && !OG(active_ob_buffer).status && !OG(active_ob_buffer).erase) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer %s.", OG(active_ob_buffer).handler_name);
+		RETURN_FALSE;
+	}
+	
+	php_end_ob_buffer(0, 0 TSRMLS_CC);
+	RETURN_TRUE;
 }
 /* }}} */
 
-/* {{{ proto bool ob_get_flush(void) U
+/* {{{ proto bool ob_get_flush(void)
    Get current buffer contents, flush (send) the output buffer, and delete current output buffer */
 PHP_FUNCTION(ob_get_flush)
 {
 	if (zend_parse_parameters_none() == FAILURE) {
 		return;
 	}
-	
-	if (SUCCESS != php_output_get_contents(return_value TSRMLS_CC)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete and flush buffer. No buffer to delete or flush");
+
+	/* get contents */
+	if (php_ob_get_buffer(return_value TSRMLS_CC)==FAILURE) {
 		RETURN_FALSE;
 	}
-	if (SUCCESS != php_output_end(TSRMLS_C)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer of %s (%d)", Z_STRVAL_P(OG(active)->name), OG(active)->level);
+	/* error checks */
+	if (!OG(ob_nesting_level)) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete and flush buffer. No buffer to delete or flush.");
+		zval_dtor(return_value);
+		RETURN_FALSE;
 	}
+	if (OG(ob_nesting_level) && !OG(active_ob_buffer).status && !OG(active_ob_buffer).erase) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer %s.", OG(active_ob_buffer).handler_name);
+		zval_dtor(return_value);
+		RETURN_FALSE;
+	}
+	/* flush */
+	php_end_ob_buffer(1, 0 TSRMLS_CC);
 }
 /* }}} */
 
-/* {{{ proto bool ob_get_clean(void) U
+/* {{{ proto bool ob_get_clean(void)
    Get current buffer contents and delete current output buffer */
 PHP_FUNCTION(ob_get_clean)
 {
 	if (zend_parse_parameters_none() == FAILURE) {
 		return;
 	}
-	
-	if (SUCCESS != php_output_get_contents(return_value TSRMLS_CC)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer. No buffer to delete");
+	/* get contents */
+	if (php_ob_get_buffer(return_value TSRMLS_CC)==FAILURE) {
 		RETURN_FALSE;
 	}
-	if (SUCCESS != php_output_discard(TSRMLS_C)) {
-		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer of %s (%d)", Z_STRVAL_P(OG(active)->name), OG(active)->level);
+	/* error checks */
+	if (!OG(ob_nesting_level)) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer. No buffer to delete.");
+		zval_dtor(return_value);
+		RETURN_FALSE;
 	}
+	if (OG(ob_nesting_level) && !OG(active_ob_buffer).status && !OG(active_ob_buffer).erase) {
+		php_error_docref("ref.outcontrol" TSRMLS_CC, E_NOTICE, "failed to delete buffer %s.", OG(active_ob_buffer).handler_name);
+		zval_dtor(return_value);
+		RETURN_FALSE;
+	}
+	/* delete buffer */
+	php_end_ob_buffer(0, 0 TSRMLS_CC);
 }
 /* }}} */
 
-/* {{{ proto string ob_get_contents(void) U
+/* {{{ proto string ob_get_contents(void)
    Return the contents of the output buffer */
 PHP_FUNCTION(ob_get_contents)
 {
 	if (zend_parse_parameters_none() == FAILURE) {
 		return;
 	}
-	if (SUCCESS != php_output_get_contents(return_value TSRMLS_CC)) {
+		
+	if (php_ob_get_buffer(return_value TSRMLS_CC)==FAILURE) {
 		RETURN_FALSE;
 	}
 }
 /* }}} */
 
-/* {{{ proto int ob_get_level(void) U
+/* {{{ proto int ob_get_level(void)
    Return the nesting level of the output buffer */
 PHP_FUNCTION(ob_get_level)
 {
 	if (zend_parse_parameters_none() == FAILURE) {
 		return;
 	}
-	RETURN_LONG(php_output_get_level(TSRMLS_C));
+		
+	RETURN_LONG (OG(ob_nesting_level));
 }
 /* }}} */
 
-/* {{{ proto int ob_get_length(void) U
+/* {{{ proto int ob_get_length(void)
    Return the length of the output buffer */
 PHP_FUNCTION(ob_get_length)
 {
 	if (zend_parse_parameters_none() == FAILURE) {
 		return;
 	}
-	if (SUCCESS != php_output_get_length(return_value TSRMLS_CC)) {
+		
+	if (php_ob_get_length(return_value TSRMLS_CC)==FAILURE) {
 		RETURN_FALSE;
 	}
 }
 /* }}} */
 
-/* {{{ proto false|array ob_list_handlers() U
- *  List all output_buffers in an array 
- */
-PHP_FUNCTION(ob_list_handlers)
+/* {{{ int php_ob_buffer_status(php_ob_buffer *ob_buffer, zval *result) */
+static int php_ob_buffer_status(php_ob_buffer *ob_buffer, zval *result) 
 {
-	if (zend_parse_parameters_none() == FAILURE) {
-		return;
-	}
+	zval *elem;
 
-	array_init(return_value);
+	MAKE_STD_ZVAL(elem);
+	array_init(elem);
 
-	if (!OG(active)) {
-		return;
+	add_assoc_long(elem, "chunk_size", ob_buffer->chunk_size);
+	if (!ob_buffer->chunk_size) {
+		add_assoc_long(elem, "size", ob_buffer->size);
+		add_assoc_long(elem, "block_size", ob_buffer->block_size);
 	}
-	
-	zend_stack_apply_with_argument(OG(handlers), ZEND_STACK_APPLY_BOTTOMUP, php_output_stack_apply_list, return_value);
+	if (ob_buffer->internal_output_handler) {
+		add_assoc_long(elem, "type", PHP_OUTPUT_HANDLER_INTERNAL);
+		add_assoc_long(elem, "buffer_size", ob_buffer->internal_output_handler_buffer_size);
+	}
+	else {
+		add_assoc_long(elem, "type", PHP_OUTPUT_HANDLER_USER);
+	}
+	add_assoc_long(elem, "status", ob_buffer->status);
+	add_assoc_string(elem, "name", ob_buffer->handler_name, 1);
+	add_assoc_bool(elem, "del", ob_buffer->erase);
+	add_next_index_zval(result, elem);
+
+	return SUCCESS;
 }
 /* }}} */
 
-/* {{{ proto false|array ob_get_status([bool full_status]) U
+
+/* {{{ proto false|array ob_get_status([bool full_status])
    Return the status of the active or all output buffers */
 PHP_FUNCTION(ob_get_status)
 {
 	zend_bool full_status = 0;
-	
-	if (SUCCESS != zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|b", &full_status)) {
-		RETURN_FALSE;
-	}
-	if (!OG(active)) {
-		RETURN_FALSE;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|b", &full_status) == FAILURE ) {
+		return;
 	}
-	
+
 	array_init(return_value);
+
 	if (full_status) {
-		zend_stack_apply_with_argument(OG(handlers), ZEND_STACK_APPLY_BOTTOMUP, php_output_stack_apply_status, return_value);
-	} else {
-		php_output_handler_status(OG(active), return_value);
+		if (OG(ob_nesting_level)>1) {
+			zend_stack_apply_with_argument(&OG(ob_buffers), ZEND_STACK_APPLY_BOTTOMUP, (int (*)(void *elem, void *))php_ob_buffer_status, return_value);
+		}
+		if (OG(ob_nesting_level)>0 && php_ob_buffer_status(&OG(active_ob_buffer), return_value)==FAILURE) {
+			RETURN_FALSE;
+		}
+	} else if (OG(ob_nesting_level)>0) {
+		add_assoc_long(return_value, "level", OG(ob_nesting_level));
+		if (OG(active_ob_buffer).internal_output_handler) {
+			add_assoc_long(return_value, "type", PHP_OUTPUT_HANDLER_INTERNAL);
+		} else {
+			add_assoc_long(return_value, "type", PHP_OUTPUT_HANDLER_USER);
+		}
+		add_assoc_long(return_value, "status", OG(active_ob_buffer).status);
+		add_assoc_string(return_value, "name", OG(active_ob_buffer).handler_name, 1);
+		add_assoc_bool(return_value, "del", OG(active_ob_buffer).erase);
 	}
 }
 /* }}} */
 
-/* {{{ proto void ob_implicit_flush([int flag]) U
+
+/* {{{ proto void ob_implicit_flush([int flag])
    Turn implicit flush on/off and is equivalent to calling flush() after every output call */
 PHP_FUNCTION(ob_implicit_flush)
 {
 	long flag = 1;
-	
-	if (SUCCESS == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &flag)) {
-		php_output_set_implicit_flush(flag TSRMLS_CC);
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &flag) == FAILURE) {
+		return;
 	}
+
+	if (flag) {
+		php_start_implicit_flush(TSRMLS_C);
+	} else {
+		php_end_implicit_flush(TSRMLS_C);
+	}
+}
+/* }}} */
+
+
+/* {{{ char *php_get_output_start_filename(TSRMLS_D)
+   Return filename start output something */
+PHPAPI char *php_get_output_start_filename(TSRMLS_D)
+{
+	return OG(output_start_filename);
+}
+/* }}} */
+
+
+/* {{{ char *php_get_output_start_lineno(TSRMLS_D)
+   Return line number start output something */
+PHPAPI int php_get_output_start_lineno(TSRMLS_D)
+{
+	return OG(output_start_lineno);
 }
 /* }}} */
 
+
 /* {{{ proto bool output_reset_rewrite_vars(void)
    Reset(clear) URL rewriter values */
 PHP_FUNCTION(output_reset_rewrite_vars)
@@ -1486,6 +1058,7 @@ PHP_FUNCTION(output_reset_rewrite_vars)
 }
 /* }}} */
 
+
 /* {{{ proto bool output_add_rewrite_var(string name, string value)
    Add URL rewriter values */
 PHP_FUNCTION(output_add_rewrite_var)
@@ -1494,7 +1067,7 @@ PHP_FUNCTION(output_add_rewrite_var)
 	int name_len, value_len;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss", &name, &name_len, &value, &value_len) == FAILURE) {
-		RETURN_FALSE;
+		return;
 	}
 
 	if (php_url_scanner_add_var(name, name_len, value, value_len, 1 TSRMLS_CC) == SUCCESS) {