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| $Id$ | |
| PHP X.Y 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 | |
| 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 | |
| . list() now always supports ArrayAccess and never supports strings. | |
| Previously both were accepted in some situations and not in others. | |
| (RFC: https://wiki.php.net/rfc/fix_list_behavior_inconsistency) | |
| . Bitwise shifts by negative numbers of bits are disallowed (throws E_WARNING | |
| and gives FALSE, like a division by zero). | |
| . Left bitwise shifts by a number of bits beyond the bit width of an integer | |
| will always result in 0, even on CPUs which wrap around. | |
| . Right bitwise shifts by a number of bits beyond the bit width of an integer | |
| will always result in 0 or -1 (depending on sign), even on CPUs which wrap | |
| around. | |
| . Removed ASP (<%) and script (<script language=php>) tags. | |
| (RFC: https://wiki.php.net/rfc/remove_alternative_php_tags) | |
| . call_user_method() and call_user_method_array() no longer exists. | |
| . PHP 7 doesn't keep original values of arguments passed to user functions, | |
| so func_get_arg() and func_get_args() will return current value of argument | |
| instead of the actually passed. The following code is going to be affected: | |
| function foo($x) { $x = 2; return func_get_arg(0);} var_dump(foo(1)); | |
| It will now produce 2, not 1. | |
| . Function parameters with duplicate name are not allowed anymore. Definitions | |
| like “function foo($x,$x) {}” will lead to compile time error. | |
| . Indirect variable, property and method references are now interpreted with | |
| left-to-right semantics. See details in: | |
| https://wiki.php.net/rfc/uniform_variable_syntax#semantic_differences_in_existing_syntax | |
| . The global keyword now only accepts simple variables. See details in: | |
| https://wiki.php.net/rfc/uniform_variable_syntax#global_keyword_takes_only_simple_variables | |
| . The addition of Unicode Codepoint Escape Syntax for double-quoted strings | |
| and heredocs means that \u{ followed by an invalid sequence will now error. | |
| However, \u without a following { is unaffected, so "\u202e" won't error and | |
| will work the same as before. | |
| . zend_function.common.num_args don't include the variadic argument anymore. | |
| . ob_start() no longer issues an E_ERROR, but instead an E_RECOVERABLE_ERROR in case an | |
| output buffer is created in an output buffer handler. | |
| . Removed support for assigning the result of new by reference. | |
| . Removed support for scoped calls to non-static methods from an incompatible | |
| $this context. See details in https://wiki.php.net/rfc/incompat_ctx. | |
| . Removed support for #-style comments in ini files. Use ;-style comments | |
| instead. | |
| . Added zend_memnstr_ex, which is based on string matching sunday algo. | |
| . Added zend_memnrstr, zend_memnrstr_ex. | |
| . Added hybrid sorting algo zend_sort for better performance. | |
| . Added stable sorting algo zend_insert_sort. | |
| . Invalid octal literals in source code now produce compile errors, fixing | |
| PHPSadness #31. Previously, the invalid digits (and any following valid | |
| digits) were simply ignored, such that 0781 became 7. | |
| . Removed dl() function on fpm-fcgi. | |
| . Removed support for hexadecimal numeric strings. This means that some | |
| operations like == will no longer specially interpret strings containing | |
| hexadecimal numbers. Furthermore is_numeric() will not consider hexadecimal | |
| strings to be numeric (use FILTER_VALIDATE_INT instead). | |
| (RFC: https://wiki.php.net/rfc/remove_hex_support_in_numeric_strings) | |
| - Date: | |
| . Removed $is_dst parameter from mktime() and gmmktime(). | |
| - DBA | |
| . dba_delete() now returns false if the key was not found for the inifile | |
| handler, too. | |
| - GMP | |
| . Requires libgmp version 4.2 or newer now. | |
| . gmp_setbit() and gmp_clrbit() now return FALSE for negative indices, making | |
| them consistent with other GMP functions. | |
| - Session | |
| . session_start() accepts all INI settings as array. e.g. ['cache_limiter'=>'private'] | |
| sets session.cache_limiter=private. It also supports 'read_and_close' which closes | |
| session data immediately after read data. | |
| . Save handler accepts validate_sid(), update_timestamp() which validates session | |
| ID existence, updates timestamp of session data. Compatibility of old user defined | |
| save handler is retained. | |
| . SessionUpdateTimestampHandlerInterface is added. validateSid(), updateTimestamp() | |
| is defined in the interface. | |
| . session.lazy_write(default=On) INI setting enables only write session data when | |
| session data is updated. | |
| - PCRE: | |
| . Removed support for /e (PREG_REPLACE_EVAL) modifier. Use | |
| preg_reaplace_callback() instead. | |
| - Standard: | |
| . Removed string category support in setlocale(). Use the LC_* constants | |
| instead. | |
| . Removed set_magic_quotes_runtime() and its alias magic_quotes_runtime(). | |
| - Stream: | |
| . Removed set_socket_blocking() in favor of its alias stream_set_blocking(). | |
| ======================================== | |
| 2. New Features | |
| ======================================== | |
| - Core | |
| . Added null coalesce operator (??). | |
| (RFC: https://wiki.php.net/rfc/isset_ternary) | |
| . Support for strings with length >= 2^31 bytes in 64 bit builds. | |
| . Closure::call() method added. | |
| . Added \u{xxxxxx} Unicode Codepoint Escape Syntax for double-quoted strings | |
| and heredocs. | |
| . define() now supports arrays as constant values, fixing an oversight where define() did not support arrays yet const syntax did. | |
| ======================================== | |
| 3. Changes in SAPI modules | |
| ======================================== | |
| - FPM | |
| . Fixed bug #65933 (Cannot specify config lines longer than 1024 bytes). | |
| . Listen = port now listen on all addresses (IPv6 and IPv4-mapped). | |
| ======================================== | |
| 4. Deprecated Functionality | |
| ======================================== | |
| ======================================== | |
| 5. Changed Functions | |
| ======================================== | |
| - parse_ini_file(): | |
| - parse_ini_string(): | |
| . Added scanner mode INI_SCANNER_TYPED to yield typed .ini values. | |
| - unserialize(): | |
| . Added second parameter for unserialize function | |
| (RFC: https://wiki.php.net/rfc/secure_unserialize) allowing to specify | |
| acceptable classes: | |
| unserialize($foo, ["allowed_classes" => ["MyClass", "MyClass2"]); | |
| ======================================== | |
| 6. New Functions | |
| ======================================== | |
| - GMP | |
| . Added gmp_random_seed(). | |
| - Standard | |
| . Added intdiv() function for integer division. | |
| ======================================== | |
| 7. New Classes and Interfaces | |
| ======================================== | |
| ======================================== | |
| 8. Removed Extensions | |
| ======================================== | |
| ======================================== | |
| 9. Other Changes to Extensions | |
| ======================================== | |
| ======================================== | |
| 10. New Global Constants | |
| ======================================== | |
| - Core | |
| . PHP_INT_MIN added. | |
| ======================================== | |
| 11. Changes to INI File Handling | |
| ======================================== | |
| - Core | |
| . Removed asp_tags ini directive. Trying to enable it will result in a fatal | |
| error. | |
| ======================================== | |
| 12. Windows Support | |
| ======================================== | |
| - Core | |
| . Support for native 64 bit integers in 64 bit builds. | |
| . Support for large files in 64 bit builds. | |
| ======================================== | |
| 13. Other Changes | |
| ======================================== | |
| - Core | |
| . Instead of being undefined and platform-dependent, NaN and Infinity will | |
| always be zero when casted to integer. | |
| . Calling a method on a non-object no longer raises a fatal error; see | |
| also: https://wiki.php.net/rfc/catchable-call-to-member-of-non-object. | |
| . Error messages for zend_parse_parameters, type hints and conversions now always say "integer" and "float" instead of "long" and "double". |