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PHP 7.2 UPGRADE NOTES
1. Backward Incompatible Changes
2. New Features
3. Changes in SAPI modules
4. Deprecated Functionality
5. Changed Functions
6. New Functions
7. New Classes and Interfaces
8. Removed Extensions and SAPIs
9. Other Changes to Extensions
10. New Global Constants
11. Changes to INI File Handling
12. Windows Support
13. Other Changes
========================================
1. Backward Incompatible Changes
========================================
- Core:
. gettype() will now return "resource (closed)" instead of "unknown type" for
closed resources.
. is_object() will now return true for objects of class
__PHP_Incomplete_Class.
. Support for Netware operating systems have been removed.
========================================
2. New Features
========================================
- PCRE:
. Added `J` modifier for setting PCRE_DUPNAMES.
- Standard:
. Simplified password hashing API updated to support Argon2i hashes when PHP is compiled with libargon2
(https://wiki.php.net/rfc/argon2_password_hash).
. proc_nice() is now supported on Windows platforms.
========================================
3. Changes in SAPI modules
========================================
========================================
4. Deprecated Functionality
========================================
- GD:
. png2wbmp() and jpeg2wbmp() have been deprecated, and will be removed as of
PHP 8.0.0.
========================================
5. Changed Functions
========================================
- Standard:
. password_hash() can generate Argon2i hashes when the algorithm is set to PASSWORD_ARGON2I.
When using PASSWORD_ARGON2I, the following cost factors may be set: 'memory_cost', 'time_cost',
and 'threads'. These cost factors will default to 'PASSWORD_ARGON2_DEFAULT_MEMORY_COST',
'PASSWORD_ARGON2_DEFAULT_TIME_COST', and 'PASSWORD_ARGON2_DEFAULT_THREADS' respectively if not set.
. password_verify() can verify Argon2i hashes.
. password_get_info() and password_needs_rehash() can accept Argon2i hashes.
. mail()/mb_send_mail() accept array $extra_header. Array paramter is checked against RFC 2822.
Array format is
$extra_headers = [
'Header-Name' => 'Header value',
'Multiple' => ['One header', 'Another header'],
'Multiline' = "FirstLine\r\n SecondLine",
];
- XML:
. utf8_encode() and utf8_decode() have been moved to the Standard extension
as string functions.
========================================
6. New Functions
========================================
- Core:
. Added stream_isatty().
. Added sapi_windows_vt100_support().
- GD:
. Added imagesetclip() and imagegetclip().
. Added imageopenpolygon().
. Added imageresolution().
- Mbstring:
. Added mb_chr() and mb_ord().
. Added mb_scurb() that scrub broken multibyte strings.
- Sockets:
. Added socket_addrinfo_lookup(), socket_addrinfo_connect(),
socket_addrinfo_bind() and socket_addrinfo_explain().
========================================
7. New Classes and Interfaces
========================================
========================================
8. Removed Extensions and SAPIs
========================================
========================================
9. Other Changes to Extensions
========================================
- EXIF:
. Added extended exif tag support for the following formats:
Samsung, DJI, Panasonic, Sony, Pentax, Minolta & Sigma/Foveon.
- GD:
. Removed --enable-gd-native-ttf configuration option which was unused as
of PHP 5.5.0 anyway.
. imagegd() stores truecolor images as real truecolor images. Formerly, they
have been converted to palette.
. imageantialias() is now also available if compiled with a system libgd.
- Mbstring
. mb_check_encoding() accepts array parameter. Both key and value
ecodings are checked recursively.
. mb_convert_encoding() accepts array parameter. Only value encodings
are converted recursively.
========================================
10. New Global Constants
========================================
- Core:
. PHP_FLOAT_DIG number of decimal digits, that can be rounded into a
float and back without precision loss
. PHP_FLOAT_EPSILON smallest representable positive number x, so then
x + 1.0 != 1.0
. PHP_FLOAT_MIN min representable float number
. PHP_FLOAT_MAX max representable float number
- GD:
. IMG_EFFECT_MULTIPLY
- Standard:
. PASSWORD_ARGON2_DEFAULT_MEMORY_COST
. PASSWORD_ARGON2_DEFAULT_TIME_COST
. PASSWORD_ARGON2_DEFAULT_THREADS
. PASSWORD_ARGON2I
========================================
11. Changes to INI File Handling
========================================
- sql.safe_mode
. This INI directive have been removed.
========================================
12. Windows Support
========================================
- Support for VT100 console mode
On systems starting with 10.0.10586, cmd.exe supports ANSI escape sequences.
The corresponding console mode is enabled by default on CLI on suitable
systems. As well, the function sapi_windows_vt100_support() is provided,
to control and query the corresponding information in the scripts.
========================================
13. Other Changes
========================================
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