1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
|
--TEST--
Test fread() function : usage variations - read beyond file size, write only mode
--SKIPIF--
<?php
if (substr(PHP_OS, 0, 3) == 'WIN') {
die('skip.. Not valid for Windows');
}
?>
--FILE--
<?php
/*
Prototype: string fread ( resource $handle [, int $length] );
Description: reads up to length bytes from the file pointer referenced by handle.
Reading stops when up to length bytes have been read, EOF (end of file) is
reached, (for network streams) when a packet becomes available, or (after
opening userspace stream) when 8192 bytes have been read whichever comes first.
*/
// include the file.inc for common functions for test
include ("file.inc");
/* Function : function check_read(resource $file_handle, int $read_size, int $expect_size)
Description : Read data from file of size $read_size and verifies that $expected_size no. of
bytes are read.
$file_handle : File Handle
$read_size : No. of bytes to be read.
$expect_size : Expected data length
Returns: returns the data read
*/
function check_read($file_handle, $read_size, $expect_size) {
// print file pointer position before read
var_dump( ftell($file_handle) );
var_dump( feof($file_handle) );
// read the data of size $read_size
echo "Reading $read_size bytes from file, expecting $expect_size bytes ... ";
$data_from_file = fread($file_handle, $read_size);
// check if data read is of expected size
if ( strlen($data_from_file) == $expect_size)
echo "OK\n";
else
echo "Error reading file, total number of bytes read = ".strlen($data_from_file)."\n";
// file pointer position after read
var_dump( ftell($file_handle) );
// check if file pointer at eof()
var_dump( feof($file_handle) );
return $data_from_file;
}
echo "*** Testing fread() : usage variations ***\n";
$file_modes = array("a","ab","at",
"w","wb","wt",
"x","xb","xt" );
$file_content_types = array("numeric","text","text_with_new_line");
foreach($file_content_types as $file_content_type) {
echo "\n-- Testing fread() with file having content of type ". $file_content_type ." --\n";
/* open the file using $files_modes and perform fread() on it */
foreach($file_modes as $file_mode) {
if(!strstr($file_mode,"x")){
/* create files with $file_content_type */
create_files ( dirname(__FILE__), 1, $file_content_type, 0755, 1, "w", "fread_variation", 4);
}
$filename = dirname(__FILE__)."/fread_variation4.tmp"; // this is name of the file created by create_files()
echo "-- File opened in mode ".$file_mode." --\n";
$file_handle = fopen($filename, $file_mode);
if (!$file_handle) {
echo "Error: failed to fopen() file: $filename!";
exit();
}
if(strstr($file_mode,"w") || strstr($file_mode,"x") ) {
fill_file($file_handle, $file_content_type, 1024);
}
rewind($file_handle);
echo "-- Reading beyond filesize, expeceted : 1024 bytes --\n";
// read file by giving size more than its size
rewind($file_handle);
$data_from_file = check_read($file_handle, 1030, ( strstr($file_mode, "+") ? 1024 : 0) );
if ( $data_from_file != false)
var_dump( md5($data_from_file) );
echo "-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --\n";
rewind($file_handle);
// try fread when file pointer at end
fseek($file_handle, 0, SEEK_END);
//reading file when file pointer at end
$data_from_file = check_read($file_handle, 10, 0);
if ( $data_from_file != false)
var_dump( md5($data_from_file) );
// now close the file
fclose($file_handle);
// delete the file created
delete_file($filename); // delete file
} // end of inner foreach loop
}// end of outer foreach loop
echo"Done\n";
?>
--EXPECT--
*** Testing fread() : usage variations ***
-- Testing fread() with file having content of type numeric --
-- File opened in mode a --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode ab --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode at --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode w --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode wb --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode wt --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode x --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode xb --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode xt --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- Testing fread() with file having content of type text --
-- File opened in mode a --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode ab --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode at --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode w --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode wb --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode wt --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode x --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode xb --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode xt --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- Testing fread() with file having content of type text_with_new_line --
-- File opened in mode a --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode ab --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode at --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode w --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode wb --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode wt --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode x --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode xb --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
-- File opened in mode xt --
-- Reading beyond filesize, expeceted : 1024 bytes --
int(0)
bool(false)
Reading 1030 bytes from file, expecting 0 bytes ... OK
int(0)
bool(false)
-- Reading beyond filesize when file pointer pointing to EOF, expeceted : 0 bytes --
int(1024)
bool(false)
Reading 10 bytes from file, expecting 0 bytes ... OK
int(1024)
bool(false)
Done
|
