Fixed inclusion order for phpize builds on Windows.
Added missing hashtable insertion APIs for arr/obj/ref.
Implemented FR #77372 (Relative file path is removed from uploaded
file).
Fixed bug #81607 (CE_CACHE allocation with concurrent access).
Fixed bug #81507 (Fiber does not compile on AIX).
Fixed bug #78647 (SEGFAULT in zend_do_perform_implementation_check).
Fixed bug #81518 (Header injection via default_mimetype / default_charset).
Fixed bug #75941 (Fix compile failure on Solaris with clang).
Fixed bug #81380 (Observer may not be initialized properly).
Fixed bug #81514 (Using Enum as key in WeakMap triggers GC + SegFault).
Fixed bug #81520 (TEST_PHP_CGI_EXECUTABLE badly set in run-tests.php).
Fixed bug #81377 (unset() of $GLOBALS sub-key yields warning).
Fixed bug #81342 (New ampersand token parsing depends on new line after it).
Fixed bug #81280 (Unicode characters in cli.prompt causes segfault).
Fixed bug #81192 ("Declaration should be compatible with" gives incorrect line number with traits).
Fixed bug #78919 (CLI server: insufficient cleanup if request startup fails).
Fixed bug #81303 (match error message improvements).
Fixed bug #81238 (Fiber support missing for Solaris Sparc).
Fixed bug #81237 (Comparison of fake closures doesn't work).
Fixed bug #81202 (powerpc64 build fails on fibers).
Fixed bug #80072 (Cyclic unserialize in TMPVAR operand may leak).
Fixed bug #81163 (__sleep allowed to return non-array).
Fixed bug #75474 (function scope static variables are not bound to a unique function).
Fixed bug #53826 (__callStatic fired in base class through a parent call if the method is private).
Fixed bug #81076 (incorrect debug info on Closures with implicit binds).

Fixed bug #81496 (Server logs incorrect request method).

Dispatch using LANG_NEUTRAL instead of LOCALE_SYSTEM_DEFAULT.

Fixed bug #81085 (Support CURLOPT_SSLCERT_BLOB for cert strings).

Fixed bug #81458 (Regression Incorrect difference after timezone change).
Fixed bug #81500 (Interval serialization regression since 7.3.14 / 7.4.2).
Fixed bug #81504 (Incorrect timezone transition details for POSIX data).
Fixed bug #80998 (Missing second with inverted interval).
Speed up finding timezone offset information.
Fixed bug #79580 (date_create_from_format misses leap year).
Fixed bug #80963 (DateTimeZone::getTransitions() truncated).
Fixed bug #80974 (Wrong diff between 2 dates in different timezones).
Fixed bug #80998 (Missing second with inverted interval).
Fixed bug #81097 (DateTimeZone silently falls back to UTC when providing an offset with seconds).
Fixed bug #81106 (Regression in 8.1: add() now truncate ->f).
Fixed bug #81273 (Date interval calculation not correct).
Fixed bug #52480 (Incorrect difference using DateInterval).
Fixed bug #62326 (date_diff() function returns false result).
Fixed bug #64992 (dst not handled past 2038).
Fixed bug #65003 (Wrong date diff).
Fixed bug #66545 (DateTime. diff returns negative values).
Fixed bug #68503 (date_diff on two dates with timezone set localised returns wrong results).
Fixed bug #69806 (Incorrect date from timestamp).
Fixed bug #71700 (Extra day on diff between begin and end of march 2016).
Fixed bug #71826 (DateTime::diff confuse on timezone 'Asia/Tokyo').
Fixed bug #73460 (Datetime add not realising it already applied DST change).
Fixed bug #74173 (DateTimeImmutable::getTimestamp() triggers DST switch in incorrect time).
Fixed bug #74274 (Handling DST transitions correctly).
Fixed bug #74524 (Date diff is bad calculated, in same time zone).
Fixed bug #75167 (DateTime::add does only care about backward DST transition, not forward).
Fixed bug #76032 (DateTime->diff having issues with leap days for timezones ahead of UTC).
Fixed bug #76374 (Date difference varies according day time).
Fixed bug #77571 (DateTime's diff DateInterval incorrect in timezones from UTC+01:00 to UTC+12:00).
Fixed bug #78452 (diff makes wrong in hour for Asia/Tehran).
Fixed bug #79452 (DateTime::diff() generates months differently between time zones).
Fixed bug #79698 (timelib mishandles future timestamps (triggered by 'zic -b slim')).
Fixed bug #79716 (Invalid date time created (with day "00")).
Fixed bug #80610 (DateTime calculate wrong with DateInterval).
Fixed bug #80664 (DateTime objects behave incorrectly around DST transition).
Fixed bug #80913 (DateTime(Immutable)::sub around DST yield incorrect time).

Fixed bug #81588 (TokyoCabinet driver leaks memory).

Fixed bug #81433 (DOMElement::setIdAttribute() called twice may remove ID).

Fixed bug #79576 ("TYPE *" shows unhelpful message when type is not defined).

Fixed bug #61700 (FILTER_FLAG_IPV6/FILTER_FLAG_NO_PRIV|RES_RANGE failing).

Fixed bug #81513 (Future possibility for heap overflow in FPM zlog).
Fixed bug #81026 (PHP-FPM oob R/W in root process leading to privilege escalation) (CVE-2021-21703).
Added openmetrics status format.
Enable process renaming on macOS.
Added pm.max_spawn_rate option to configure max spawn child processes rate.
Fixed bug #65800 (Events port mechanism).

Convert resource<ftp> to object \FTP\Connection.

Fixed bug #71316 (libpng warning from imagecreatefromstring).
Convert resource<gd font> to object \GdFont.
Added support for Avif images

Implemented FR #68109 (Add MurmurHash V3).
Implemented FR #73385 (Add xxHash support).

Fixed bug #81532 (Change of $depth behaviour in json_encode() on PHP 8.1).

Convert resource<ldap link> to object \LDAP\Connection.
Convert resource<ldap result> to object \LDAP\Result.
Convert resource<ldap result entry> to object \LDAP\ResultEntry.

Fixed bug #76167 (mbstring may use pointer from some previous request).
Fixed bug #81390 (mb_detect_encoding() regression).
Fixed bug #81349 (mb_detect_encoding misdetcts ASCII in some cases).
Fixed bug #81298 (mb_detect_encoding() segfaults when 7bit encoding is specified).

Fixed bug #70372 (Emulate mysqli_fetch_all() for libmysqlclient).
Fixed bug #80330 (Replace language in APIs and source code/docs).
Fixed bug #80329 (Add option to specify LOAD DATA LOCAL white list folder (including libmysql)).

Fixed bug #63327 (Crash (Bus Error) in mysqlnd due to wrong alignment).
Fixed bug #80761 (PDO uses too much memory).

Fixed bug #81409 (Incorrect JIT code for ADD with a reference to array).
Fixed bug #81255 (Memory leak in PHPUnit with functional JIT).
Fixed bug #80959 (infinite loop in building cfg during JIT compilation).
Fixed bug #81225 (Wrong result with pow operator with JIT enabled).
Fixed bug #81249 (Intermittent property assignment failure with JIT enabled).
Fixed bug #81256 (Assertion `zv != ((void *)0)' failed for "preload" with JIT).
Fixed bug #81133 (building opcache with phpize fails).
Fixed bug #81136 (opcache header not installed).
Added inheritance cache.

Fixed bug #81502 ($tag argument of openssl_decrypt() should accept null/empty string).
Bump minimal OpenSSL version to 1.0.2.

Fixed bug #81424 (PCRE2 10.35 JIT performance regression).
Bundled PCRE2 is 10.37.

Fixed bug #40913 (PDO_MYSQL: PDO::PARAM_LOB does not bind to a stream for fetching a BLOB).

Fixed bug #80908 (PDO::lastInsertId() return wrong).
Fixed bug #81037 (PDO discards error message text from prepared statement).

Fixed bug #77120 (Support 'success with info' at connection).

Implement PDO_ATTR_SERVER_VERSION and PDO_ATTR_SERVER_INFO for PDO::getAttribute().

Fixed bug #81343 (pdo_pgsql: Inconsitent boolean conversion after calling closeCursor()).

Fixed bug #38334 (Proper data-type support for PDO_SQLITE).

Fixed bug #81509 (pg_end_copy still expects a resource).
Convert resource<pgsql link> to object \PgSql\Connection.
Convert resource<pgsql result> to object \PgSql\Result.
Convert resource<pgsql large object> to object \PgSql\Lob.

Use SHA256 by default for signature.
Add support for OpenSSL_SHA256 and OpenSSL_SHA512 signature.

Fixed bug #81135 (unknown help topic causes assertion failure).

Convert resource<pspell> to object \PSpell\Dictionary.
Convert resource<pspell config> to object \PSpell\Config.

Fixed bug #72998 (invalid read in readline completion).

Fixed bug #81611 (ArgumentCountError when getting default value from ReflectionParameter with new).
Fixed bug #81630 (PHP 8.1: ReflectionClass->getTraitAliases() crashes with Internal error).
Fixed bug #81457 (Enum: ReflectionMethod->getDeclaringClass() return a ReflectionClass).
Fixed bug #81474 (Make ReflectionEnum and related class non-final).
Fixed bug #80821 (ReflectionProperty::getDefaultValue() returns current value for statics).
Fixed bug #80564 (ReflectionProperty::__toString() renders current value, not default value).
Fixed bug #80097 (ReflectionAttribute is not a Reflector).
Fixed bug #81200 (no way to determine if Closure is static).
Implement ReflectionFunctionAbstract::getClosureUsedVariables.

Fixed bug #81407 (shmop_open won't attach and causes php to crash).

Fixed bug #81325 (Segfault in zif_simplexml_import_dom).

Implement SHA256 and SHA512 for security protocol.

Added the XChaCha20 stream cipher functions.
Added the Ristretto255 functions, which are available in libsodium 1.0.18.

Fixed bug #66588 (SplFileObject::fgetcsv incorrectly returns a row on premature EOF).
Fixed bug #80663 (Recursive SplFixedArray::setSize() may cause double-free).
Fixed bug #81477 (LimitIterator + SplFileObject regression in 8.0.1).
Fixed bug #81112 (Special json_encode behavior for SplFixedArray).
Fixed bug #80945 ("Notice: Undefined index" on unset() ArrayObject non-existing key).
Fixed bug #80724 (FilesystemIterator::FOLLOW_SYMLINKS remove KEY_AS_FILE from bitmask).

Fixed bug #81441 (gethostbyaddr('::1') returns ip instead of name after calling some other method).
Fixed bug #81491 (Incorrectly using libsodium for argon2 hashing).
Fixed bug #81142 (PHP 7.3+ memory leak when unserialize() is used on an associative array).
Fixed bug #81111 (Serialization is unexpectedly allowed on anonymous classes with __serialize()).
Fixed bug #81137 (hrtime breaks build on OSX before Sierra).
Fixed bug #77627 (method_exists on Closure::__invoke inconsistency).

Fixed bug #81475 (stream_isatty emits warning with attached stream wrapper).

Fixed bug #79971 (special character is breaking the path in xml function) (CVE-2021-21707).
Fixed bug #70962 (XML_OPTION_SKIP_WHITE strips embedded whitespace).

Fixed bug #81490 (ZipArchive::extractTo() may leak memory).
Fixed bug #77978 (Dirname ending in colon unzips to wrong dir).
Fixed bug #81420 (ZipArchive::extractTo extracts outside of destination) (CVE-2021-21706).
Fixed bug #80833 (ZipArchive::getStream doesn't use setPassword).