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UPGRADING
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UPGRADING
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PHP 8.2 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
14. Performance Improvements
========================================
1. Backward Incompatible Changes
========================================
- Standard:
. strtolower() and strtoupper() are no longer locale-sensitive. They now
perform ASCII case conversion, as if the locale were "C". Use
mb_strtolower() if you want localized case conversion. Similarly, stristr,
stripos, strripos, lcfirst, ucfirst, ucwords, str_ireplace,
array_change_key_case and sorting with SORT_FLAG_CASE use ASCII case
conversion.
========================================
2. New Features
========================================
- Curl:
. Added CURLINFO_EFFECTIVE_METHOD option and returning the effective
HTTP method in curl_getinfo() return value.
- OCI8:
. Added an oci8.prefetch_lob_size directive and oci_set_prefetch_lob()
function to tune LOB query performance by reducing the number of
round-trips between PHP and Oracle Database when fetching LOBS. This is
usable with Oracle Database 12.2 or later.
- PCRE:
. Added support for the "n" (NO_AUTO_CAPTURE) modifier, which makes simple
`(xyz)` groups non-capturing. Only named groups like `(?<name>xyz)` are
capturing. This only affects which groups are capturing, it is still
possible to use numbered subpattern references, and the matches array will
still contain numbered results.
========================================
3. Changes in SAPI modules
========================================
========================================
4. Deprecated Functionality
========================================
- Core:
. Creation of dynamic properties is deprecated, unless the class opts in by
using the #[AllowDynamicProperties] attribute. stdClass allows dynamic
properties. Usage of __get()/__set() is not affected by this change. A
dynamic properties deprecation warning can be addressed by:
- Declaring the property (preferred).
- Adding the #[AllowDynamicProperties] attribute to the class (which also
applies to all child classes).
- Using a WeakMap if you wish to associate additional data with an object
you do not own.
. Callables that are not accepted by the $callable() syntax (but are accepted
by call_user_func) are deprecated. In particular:
"self::method"
"parent::method"
"static::method"
["self", "method"]
["parent", "method"]
["static", "method"]
["Foo", "Bar::method"]
[new Foo, "Bar::method"]
This does not affect normal method callables like "A::method" or
["A", "method"]. A deprecation notice is only emitted on call. Both
is_callable() and the callable type will silently accept these callables
until support for them is removed entirely.
RFC: https://wiki.php.net/rfc/deprecate_partially_supported_callables
- Mbstring:
. Use of QPrint, Base64, Uuencode, and HTML-ENTITIES 'text encodings' is
deprecated for all Mbstring functions. Unlike all the other text
encodings supported by Mbstring, these do not encode a sequence of
Unicode codepoints, but rather a sequence of raw bytes. It is not
clear what the correct return values for most Mbstring functions should
be when one of these non-encodings is specified. Further, PHP has
separate, built-in implementations of all of them; for example, UUencoded
data can be handled using convert_uuencode/convert_uudecode.
========================================
5. Changed Functions
========================================
- DBA
. dba_open() and dba_popen() now have the following enforced function signature
dba_open(string $path, string $mode, ?string $handler = null, int $permission = 0o644, int $map_size = 0)
. dba_fetch()'s optional skip argument is now at the end in line with
PHP userland semantics its signature now is:
dba_fetch(string|array $key, $dba, int $skip = 0): string|false
The overloaded signature
dba_fetch(string|array $key, $skip, $dba): string|false
is still accepted, but it is recommended to use the new standard variant.
========================================
6. New Functions
========================================
- Sodium:
. sodium_crypto_stream_xchacha20_xor_ic()
- Standard:
. The peak memory usage can now be reset to the current usage thanks to
memory_reset_peak_usage().
========================================
7. New Classes and Interfaces
========================================
========================================
8. Removed Extensions and SAPIs
========================================
========================================
9. Other Changes to Extensions
========================================
- Intl:
. IntlBreakIterator, IntlRuleBasedBreakIterator, IntlCodePointBreakIterator,
IntlPartsIterator, IntlCalendar, IntlCalendar, Collator, IntlIterator,
UConverter, IntlDateFormatter, IntlDatePatternGenerator, MessageFormatter,
ResourceBundle, Spoofchecker, IntlTimeZone and Transliterator instances are
no longer serializable. Previously, they could be serialized, but
unserialization yielded unusable objects or failed.
- OCI8:
. The minimum Oracle Client library version required is now 11.2.
- Standard:
. getimagesize() now reports the actual image dimensions, bits and channels
of AVIF images. Previously, the dimensions have been reported as 0x0, and
bits and channels have not been reported at all.
- Zip:
. extension updated to 1.20.0 with new methods:
ZipArchive::clearError, getStreamName and getStreamIndex
========================================
10. New Global Constants
========================================
- COM_DOTNET:
. LOCALE_NEUTRAL
- Sockets:
. SO_INCOMING_CPU
========================================
11. Changes to INI File Handling
========================================
========================================
12. Windows Support
========================================
- Core:
. Windows specific error messages are no longer localized, but instead in
English to better match PHP error messages.
- OCI8:
. Since building against Oracle Client 10g is no longer supported anyway,
the configuration option --with-oci8 has been dropped. --with-oci8-11g,
--with-oci8-12c and --with-oci8-19 are still supported.
========================================
13. Other Changes
========================================
========================================
14. Performance Improvements
========================================