PHP Release 5.5.0


    PHP 5.5.0 Release Announcement

    The PHP development team is proud to announce the immediate availability of PHP 5.5.0. This release includes a large number of new features and bug fixes.

    The key features of PHP 5.5.0 include:

    Changes that affect compatibility:

    • PHP logo GUIDs have been removed.
    • Windows XP and 2003 support dropped.
    • Case insensitivity is no longer locale specific. All case insensitive matching for function, class and constant names is now performed in a locale independent manner according to ASCII rules.

    For users upgrading from PHP 5.4, a migration guide is available detailing the changes between 5.4 and 5.5.0.

    For a full list of changes in PHP 5.5.0, see the ChangeLog.

    Source Code
    Change Logs
    core
    • Added Zend Opcache extension and enable building it by default. More details here: https://wiki.php.net/rfc/optimizerplus.
    • Added generators and coroutines (https://wiki.php.net/rfc/generators).
    • Added "finally" keyword (https://wiki.php.net/rfc/finally).
    • Added simplified password hashing API (https://wiki.php.net/rfc/password_hash).
    • Added support for constant array/string dereferencing.
    • Added array_column function which returns a column in a multidimensional array. https://wiki.php.net/rfc/array_column.
    • Added boolval().
    • Added "Z" option to pack/unpack.
    • Added Generator::throw() method.
    • Added Class Name Resolution As Scalar Via "class" Keyword.
    • Added optional second argument for assert() to specify custom message. Patch by Lonny Kapelushnik (lonny@lonnylot.com).
    • Added support for using empty() on the result of function calls and other expressions (https://wiki.php.net/rfc/empty_isset_exprs).
    • Added support for non-scalar Iterator keys in foreach (https://wiki.php.net/rfc/foreach-non-scalar-keys).
    • Added support for list in foreach (https://wiki.php.net/rfc/foreachlist).
    • Added support for changing the process's title in CLI/CLI-Server SAPIs. The implementation is more robust that the proctitle PECL module. More details here: https://wiki.php.net/rfc/cli_process_title.
    • Added ARMv7/v8 versions of various Zend arithmetic functions that are implemented using inline assembler
    • Added systemtap support by enabling systemtap compatible dtrace probes on linux.
    • Optimized access to temporary and compiled VM variables. 8% less memory reads.
    • The VM stacks for passing function arguments and syntaticaly nested calls were merged into a single stack. The stack size needed for op_array execution is calculated at compile time and preallocated at once. As result all the stack push operatins don't require checks for stack overflow any more.
    • Improve set_exception_handler while doing reset.
    • Return previous handler when passing NULL to set_error_handler and set_exception_handler.
    • Remove php_logo_guid(), php_egg_logo_guid(), php_real_logo_guid(), zend_logo_guid().
    • Drop Windows XP and 2003 support.
    • Implemented FR #64175 (Added HTTP codes as of RFC 6585).
    • Implemented FR #60738 (Allow 'set_error_handler' to handle NULL).
    • Implemented FR #60524 (specify temp dir by php.ini). .
    • Implemented FR #46487 (Dereferencing process-handles no longer waits on those processes).
    • Fixed bug #65051 (count() off by one inside unset()).
    • Fixed bug #64988 (Class loading order affects E_STRICT warning).
    • Fixed bug #64966 (segfault in zend_do_fcall_common_helper_SPEC).
    • Fixed bug #64960 (Segfault in gc_zval_possible_root).
    • Fixed bug #64936 (doc comments picked up from previous scanner run).
    • Fixed bug #64934 (Apache2 TS crash with get_browser()).
    • Fixed bug #64879 (Heap based buffer overflow in quoted_printable_encode, CVE 2013-2110).
    • Fixed bug #64853 (Use of no longer available ini directives causes crash on TS build).
    • Fixed bug #64821 (Custom Exceptions crash when internal properties overridden).
    • Fixed bug #64720 (SegFault on zend_deactivate).
    • Fixed bug #64677 .
    • Fixed bug #64660 (Segfault on memory exhaustion within function definition).
    • Fixed bug #64578 (debug_backtrace in set_error_handler corrupts zend heap: segfault).
    • Fixed bug #64565 (copy doesn't report failure on partial copy).
    • Fixed bug #64555 (foreach no longer copies keys if they are interned).
    • Fixed bugs #47675 and #64577
    • Fixed bug #64544 (Valgrind warnings after using putenv).
    • Fixed bug #64515 (Memoryleak when using the same variablename 2times in function declaration).
    • Fixed bug #64503 (Compilation fails with error: conflicting types for 'zendparse').
    • Fixed bug #64239 (Debug backtrace changed behavior since 5.4.10 or 5.4.11).
    • Fixed bug #64523, allow XOR in php.ini.
    • Fixed bug #64354 (Unserialize array of objects whose class can't be autoloaded fail).
    • Fixed bug #64370 (microtime(true) less than $_SERVER['REQUEST_TIME_FLOAT']).
    • Fixed bug #64166 (quoted-printable-encode stream filter incorrectly discarding whitespace). (Michael M Slusarz)
    • Fixed bug #64142 (dval to lval different behavior on ppc64).
    • Fixed bug #64135 (Exceptions from set_error_handler are not always propagated).
    • Fixed bug #63980 (object members get trimmed by zero bytes).
    • Fixed bug #63874 (Segfault if php_strip_whitespace has heredoc).
    • Fixed bug #63830 (Segfault on undefined function call in nested generator).
    • Fixed bug #63822 (Crash when using closures with ArrayAccess).
    • Fixed bug #61681 (Malformed grammar).
    • Fixed bug #61038 (unpack("a5", "str\0\0") does not work as expected).
    • Fixed bug #61025 (__invoke() visibility not honored).
    • Fixed bug #60833 (self, parent, static behave inconsistently case-sensitive).
    • Fixed Bug #52126: timestamp for mail.log
    • Fixed bug #49348 (Uninitialized ++$foo->bar; does not cause a notice).
    • Fixed Bug #23955: allow specifying Max-Age attribute in setcookie()
    • Fixed bug #18556 (Engine uses locale rules to handle class names).
    • Fix undefined behavior when converting double variables to integers. The double is now always rounded towards zero, the remainder of its division by 2^32 or 2^64 (depending on sizeof(long)) is calculated and it's made signed assuming a two's complement representation.
    • Drop support for bison < 2.4 when building PHP from GIT source.
    apache2 handler sapi
    • Enabled Apache 2.4 configure option for Windows
    calendar
    • Fixed bug #64895 (Integer overflow in SndToJewish).
    • Fixed bug #54254 (cal_from_jd returns month = 6 when there is only one Adar)
    cli server
    • Fixed bug #64128 (buit-in web server is broken on ppc64).
    curl
    • Remove curl stream wrappers.
    • Implemented FR #46439 - added CURLFile for safer file uploads.
    • Added support for CURLOPT_FTP_RESPONSE_TIMEOUT, CURLOPT_APPEND, CURLOPT_DIRLISTONLY, CURLOPT_NEW_DIRECTORY_PERMS, CURLOPT_NEW_FILE_PERMS, CURLOPT_NETRC_FILE, CURLOPT_PREQUOTE, CURLOPT_KRBLEVEL, CURLOPT_MAXFILESIZE, CURLOPT_FTP_ACCOUNT, CURLOPT_COOKIELIST, CURLOPT_IGNORE_CONTENT_LENGTH, CURLOPT_CONNECT_ONLY, CURLOPT_LOCALPORT, CURLOPT_LOCALPORTRANGE, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_SSL_SESSIONID_CACHE, CURLOPT_FTP_SSL_CCC, CURLOPT_HTTP_CONTENT_DECODING, CURLOPT_HTTP_TRANSFER_DECODING, CURLOPT_PROXY_TRANSFER_MODE, CURLOPT_ADDRESS_SCOPE, CURLOPT_CRLFILE, CURLOPT_ISSUERCERT, CURLOPT_USERNAME, CURLOPT_PASSWORD, CURLOPT_PROXYUSERNAME, CURLOPT_PROXYPASSWORD, CURLOPT_NOPROXY, CURLOPT_SOCKS5_GSSAPI_NEC, CURLOPT_SOCKS5_GSSAPI_SERVICE, CURLOPT_TFTP_BLKSIZE, CURLOPT_SSH_KNOWNHOSTS, CURLOPT_FTP_USE_PRET, CURLOPT_MAIL_FROM, CURLOPT_MAIL_RCPT, CURLOPT_RTSP_CLIENT_CSEQ, CURLOPT_RTSP_SERVER_CSEQ, CURLOPT_RTSP_SESSION_ID, CURLOPT_RTSP_STREAM_URI, CURLOPT_RTSP_TRANSPORT, CURLOPT_RTSP_REQUEST, CURLOPT_RESOLVE, CURLOPT_ACCEPT_ENCODING, CURLOPT_TRANSFER_ENCODING, CURLOPT_DNS_SERVERS and CURLOPT_USE_SSL.
    • Added new functions curl_escape, curl_multi_setopt, curl_multi_strerror curl_pause, curl_reset, curl_share_close, curl_share_init, curl_share_setopt curl_strerror and curl_unescape.
    • Addes new curl options CURLOPT_TELNETOPTIONS, CURLOPT_GSSAPI_DELEGATION, CURLOPT_ACCEPTTIMEOUT_MS, CURLOPT_SSL_OPTIONS, CURLOPT_TCP_KEEPALIVE, CURLOPT_TCP_KEEPIDLE and CURLOPT_TCP_KEEPINTVL.
    • Fixed bug #55635 (CURLOPT_BINARYTRANSFER no longer used. The constant still exists for backward compatibility but is doing nothing).
    • Fixed bug #54995 (Missing CURLINFO_RESPONSE_CODE support).
    • DateTime
    • Added DateTimeImmutable - a variant of DateTime that only returns the modified state instead of changing itself.
    • Fixed bug #64825 (Invalid free when unserializing DateTimeZone).
    • Fixed bug #64359 (strftime crash with VS2012).
    • Fixed bug #62852 (Unserialize Invalid Date causes crash).
    • Fixed bug #61642 (modify("+5 weekdays") returns Sunday).
    • Fixed bug #60774 (DateInterval::format("%a") is always zero when an interval is created using the createFromDateString method)
    • Fixed bug #54567 (DateTimeZone serialize/unserialize)
    • Fixed bug #53437 (Crash when using unserialized DatePeriod instance).
    dba
    • Bug #62489: dba_insert not working as expected.
    filter
    • Implemented FR #49180 - added MAC address validation.
    fileinfo
    • Upgraded libmagic to 5.14.
    • Fixed bug #64830 (mimetype detection segfaults on mp3 file).
    • Fixed bug #63590 (Different results in TS and NTS under Windows).
    • Fixed bug #63248 (Load multiple magic files from a directory under Windows).
    fpm
    • Add --with-fpm-systemd option to report health to systemd, and systemd_interval option to configure this. The service can now use Type=notify in the systemd unit file.
    • Ignore QUERY_STRING when sent in SCRIPT_FILENAME.
    • Log a warning when a syscall fails.
    • Implemented FR #64764 (add support for FPM init.d script).
    • Fixed Bug #64915 (error_log ignored when daemonize=0).
    • Fixed bug #63999 (php with fpm fails to build on Solaris 10 or 11).
    • Fixed some possible memory or resource leaks and possible null dereference detected by code coverity scan.
    gd
    • Fixed Bug #64962 (imagerotate produces corrupted image).
    • Fixed Bug #64961 (segfault in imagesetinterpolation).
    • Fix build with system libgd >= 2.1 which is now the minimal version required (as build with previous version is broken). No change when bundled libgd is used.
    hash
    • Added support for PBKDF2 via hash_pbkdf2().
    • Fixed Bug #64745 (hash_pbkdf2() truncates data when using default length and hex output).
    intl
    • Added UConverter wrapper.
    • The intl extension now requires ICU 4.0+.
    • Added intl.use_exceptions INI directive, which controls what happens when global errors are set together with intl.error_level.
    • MessageFormatter::format() and related functions now accepted named arguments and mixed numeric/named arguments in ICU 4.8+.
    • MessageFormatter::format() and related functions now don't error out when an insufficient argument count is provided. Instead, the placeholders will remain unsubstituted.
    • MessageFormatter::parse() and MessageFormat::format() (and their static equivalents) don't throw away better than second precision in the arguments.
    • IntlDateFormatter::__construct and datefmt_create() now accept for the $timezone argument time zone identifiers, IntlTimeZone objects, DateTimeZone objects and NULL.
    • IntlDateFormatter::__construct and datefmt_create() no longer accept invalid timezone identifiers or empty strings.
    • The default time zone used in IntlDateFormatter::__construct and datefmt_create() (when the corresponding argument is not passed or NULL is passed) is now the one given by date_default_timezone_get(), not the default ICU time zone.
    • The time zone passed to the IntlDateFormatter is ignored if it is NULL and if the calendar passed is an IntlCalendar object -- in this case, the IntlCalendar's time zone will be used instead. Otherwise, the time zone specified in the $timezone argument is used instead. This does not affect old code, as IntlCalendar was introduced in this version.
    • IntlDateFormatter::__construct and datefmt_create() now accept for the $calendar argument also IntlCalendar objects.
    • IntlDateFormatter::getCalendar() and datefmt_get_calendar() return false if the IntlDateFormatter was set up with an IntlCalendar instead of the constants IntlDateFormatter::GREGORIAN/TRADITIONAL. IntlCalendar did not exist before this version.
    • IntlDateFormatter::setCalendar() and datefmt_set_calendar() now also accept an IntlCalendar object, in which case its time zone is taken. Passing a constant is still allowed, and still keeps the time zone.
    • IntlDateFormatter::setTimeZoneID() and datefmt_set_timezone_id() are deprecated. Use IntlDateFormatter::setTimeZone() or datefmt_set_timezone() instead.
    • IntlDateFormatter::format() and datefmt_format() now also accept an IntlCalendar object for formatting.
    • Added the classes: IntlCalendar, IntlGregorianCalendar, IntlTimeZone, IntlBreakIterator, IntlRuleBasedBreakIterator and IntlCodePointBreakIterator.
    • Added the functions: intlcal_get_keyword_values_for_locale(), intlcal_get_now(), intlcal_get_available_locales(), intlcal_get(), intlcal_get_time(), intlcal_set_time(), intlcal_add(), intlcal_set_time_zone(), intlcal_after(), intlcal_before(), intlcal_set(), intlcal_roll(), intlcal_clear(), intlcal_field_difference(), intlcal_get_actual_maximum(), intlcal_get_actual_minimum(), intlcal_get_day_of_week_type(), intlcal_get_first_day_of_week(), intlcal_get_greatest_minimum(), intlcal_get_least_maximum(), intlcal_get_locale(), intlcal_get_maximum(), intlcal_get_minimal_days_in_first_week(), intlcal_get_minimum(), intlcal_get_time_zone(), intlcal_get_type(), intlcal_get_weekend_transition(), intlcal_in_daylight_time(), intlcal_is_equivalent_to(), intlcal_is_lenient(), intlcal_is_set(), intlcal_is_weekend(), intlcal_set_first_day_of_week(), intlcal_set_lenient(), intlcal_equals(), intlcal_get_repeated_wall_time_option(), intlcal_get_skipped_wall_time_option(), intlcal_set_repeated_wall_time_option(), intlcal_set_skipped_wall_time_option(), intlcal_from_date_time(), intlcal_to_date_time(), intlcal_get_error_code(), intlcal_get_error_message(), intlgregcal_create_instance(), intlgregcal_set_gregorian_change(), intlgregcal_get_gregorian_change() and intlgregcal_is_leap_year().
    • Added the functions: intltz_create_time_zone(), intltz_create_default(), intltz_get_id(), intltz_get_gmt(), intltz_get_unknown(), intltz_create_enumeration(), intltz_count_equivalent_ids(), intltz_create_time_zone_id_enumeration(), intltz_get_canonical_id(), intltz_get_region(), intltz_get_tz_data_version(), intltz_get_equivalent_id(), intltz_use_daylight_time(), intltz_get_offset(), intltz_get_raw_offset(), intltz_has_same_rules(), intltz_get_display_name(), intltz_get_dst_savings(), intltz_from_date_time_zone(), intltz_to_date_time_zone(), intltz_get_error_code(), intltz_get_error_message().
    • Added the methods: IntlDateFormatter::formatObject(), IntlDateFormatter::getCalendarObject(), IntlDateFormatter::getTimeZone(), IntlDateFormatter::setTimeZone().
    • Added the functions: datefmt_format_object(), datefmt_get_calendar_object(), datefmt_get_timezone(), datefmt_set_timezone(), datefmt_get_calendar_object(), intlcal_create_instance().
    mbstring
    • Fixed bug #64769 (mbstring PHPTs crash on Windows x64).
    • MCrypt
    • mcrypt_ecb(), mcrypt_cbc(), mcrypt_cfb() and mcrypt_ofb() now throw E_DEPRECATED.
    • mysql
    • This extension is now deprecated, and deprecation warnings will be generated when connections are established to databases via mysql_connect(), mysql_pconnect(), or through implicit connection: use MySQLi or PDO_MySQL instead (https://wiki.php.net/rfc/mysql_deprecation).
    • Dropped support for LOAD DATA LOCAL INFILE handlers when using libmysql. Known for stability problems.
    • Added support for SHA256 authentication available with MySQL 5.6.6+.
    mysqli
    • Added mysqli_begin_transaction()/mysqli::begin_transaction(). Implemented all options, per MySQL 5.6, which can be used with START TRANSACTION, COMMIT and ROLLBACK through options to mysqli_commit()/mysqli_rollback() and their respective OO counterparts. They work in libmysql and mysqlnd mode.
    • Added mysqli_savepoint(), mysqli_release_savepoint().
    • Fixed bug #64726 (Segfault when calling fetch_object on a use_result and DB pointer has closed).
    • Fixed bug #64394 (MYSQL_OPT_CAN_HANDLE_EXPIRED_PASSWORDS undeclared when using Connector/C).
    • mysqlnd
    • Add new begin_transaction() call to the connection object. Implemented all options, per MySQL 5.6, which can be used with START TRANSACTION, COMMIT and ROLLBACK.
    • Added mysqlnd_savepoint(), mysqlnd_release_savepoint().
    • Fixed bug #63530 (mysqlnd_stmt::bind_one_parameter crashes, uses wrong alloc for stmt->param_bind).
    • Fixed return value of mysqli_stmt_affected_rows() in the time after prepare() and before execute().
    pcre
    • Merged PCRE 8.32.
    • Deprecated the /e modifier (https://wiki.php.net/rfc/remove_preg_replace_eval_modifier).
    • Fixed bug #63284 (Upgrade PCRE to 8.31).
    pdo
    • Fixed bug #63176 (Segmentation fault when instantiate 2 persistent PDO to the same db server).
    pdo_dblib
    • Fixed bug #63638 (Cannot connect to SQL Server 2008 with PDO dblib).
    • Fixed bug #64338 (pdo_dblib can't connect to Azure SQL).
    • Fixed bug #64808 (FreeTDS PDO getColumnMeta on a prepared but not executed statement crashes).
    pdo_pgsql
    • Fixed Bug #64949 (Buffer overflow in _pdo_pgsql_error).
    pdo_mysql
    • Fixed bug #48724 (getColumnMeta() doesn't return native_type for BIT, TINYINT and YEAR).
    pgsql
    • Added pg_escape_literal() and pg_escape_identifier()
    • Bug #46408: Locale number format settings can cause pg_query_params to break with numerics.
    phar
    • Fixed timestamp update on Phar contents modification.
    readline
    • Implement FR #55694 (Expose additional readline variable to prevent default filename completion).
    reflection
    • Fixed bug #64007 (There is an ability to create instance of Generator by hand).
    sockets
    • Added recvmsg() and sendmsg() wrappers. See https://wiki.php.net/rfc/sendrecvmsg
    • Fixed bug #64508 (Fails to build with --disable-ipv6).
    • Fixed bug #64287 (sendmsg/recvmsg shutdown handler causes segfault).
    spl
    • Fixed bug #64997 (Segfault while using RecursiveIteratorIterator on 64-bits systems).
    • Fixed bug #64264 (SPLFixedArray toArray problem).
    • Fixed bug #64228 (RecursiveDirectoryIterator always assumes SKIP_DOTS).
    • Fixed bug #64106 (Segfault on SplFixedArray[][x] = y when extended).
    • Fix bug #60560 (SplFixedArray un-/serialize, getSize(), count() return 0, keys are strings).
    • Fixed bug #52861 (unset fails with ArrayObject and deep arrays).
    • Implement FR #48358 (Add SplDoublyLinkedList::add() to insert an element at a given offset).
    snmp
    • Fixed bug #64765 (Some IPv6 addresses get interpreted wrong).
    • Fixed bug #64159 (Truncated snmpget).
    • Fixed bug #64124 (IPv6 malformed).
    • Fixed bug #61981 (OO API, walk: $suffix_as_key is not working correctly).
    soap
    • Added SoapClient constructor option 'ssl_method' to specify ssl method.
    streams
    • Fixed bug #64770 (stream_select() fails with pipes returned by proc_open() on Windows x64).
    • Fixed Windows x64 version of stream_socket_pair() and improved error handling.
    tokenizer
    • Fixed bug #60097 (token_get_all fails to lex nested heredoc).
    zip
    • Upgraded libzip to 0.10.1
    • Bug #64452 (Zip crash intermittently).
    • Fixed bug #64342 (ZipArchive::addFile() has to check for file existence).
    PHP logo

    PHP is developed and maintained by a global community of contributors.

    The PHP Foundation helps fund this work. If PHP is part of your business or projects, consider sponsoring the Foundation.
    PHP

    Learn

    The PHP Foundation

    Legal

    Copyright © 2001 - 2026 the PHP Group. All Rights Reserved.
    To Top