PHP                                                                        NEWS
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16 Jul 2026, PHP 8.6.0alpha2

- Core:
  . Sync Boost.Context assembly with 1.91.0. (kn1g78)
  . Fixed bug GH-22387 (AST pretty-printing drops meaningful parentheses around
    RHS of instanceof). (timwolla)
  . Fixed bug GH-15672 and GH-15911 (Stack overflow when an internal function
    recurses through zend_call_function, such as a self-attached SPL
    iterator). (iliaal)
  . Lock unmodified readonly properties for modification after clone-with.
    (NickSdot)
  . abort() instead of exit() on hard OOM. (realFlowControl)
  . perf: ZTS: move AG and SCNG into native __thread storage. (henderkes)

- Calendar:
  . Fixed bug GH-22602 (gregoriantojd() and juliantojd() integer overflow with
    INT_MAX year). (arshidkv12)

- Curl:
  . Added CURLOPT_SEEKFUNCTION and the CURL_SEEKFUNC_OK, CURL_SEEKFUNC_FAIL
    and CURL_SEEKFUNC_CANTSEEK constants, letting libcurl rewind a streamed
    request body to resend it on a redirect, multi-pass authentication or a
    retried reused connection. (GrahamCampbell)

- Date:
  . Update timelib to 2022.17. (Derick)
  . Fixed bug GH-19803 (Parsing a string with a single white space does create
    an error). (Derick)
  . Fixed Unix timestamps in February of the year 0 are misparsed with
    @-notation. (LukasGelbmann)
  . Fixed bug GH-11368 (idate() doesn't work for the year -1). (Derick)
  . Fixed bug GH-11310 (__debugInfo does nothing on userland classes extending
    Date classes). (Derick)

- DBA:
  . Fixed OOB read on malformed length field in dba flatfile handler. (alhudz)

- DOM:
  . Fixed bug GH-22570 (Stack overflow when serializing a deeply nested
    Dom\XMLDocument). (iliaal)
  . Fixed Dom\DtdNamedNodeMap integer dimension access so negative indexes
    return NULL and indexes outside the int range throw ValueError instead of
    returning the first entity or notation. (Weilin Du)
  . Fixed bug GH-22623 (use after free with namespace nodes from
    XSLTProcessor::registerFunctions())/ (David Carlier)
  . Fixed bug GH-22554 (use-after-free with XPath callback returning a node
    from a foreign document). (David Carlier)

- Exif:
  . Fixed bug GH-11020 (exif_read_data() emits a spurious "Illegal IFD size"
    warning when an IFD is not followed by a next-IFD offset). (Eyüp Can Akman)

- GMP:
  . Fixed bug GH-22549 (Assertion failure / UB on a compound GMP power or shift
    assignment with a negative exponent). (iliaal)

- Intl:
  . Fixed NumberFormatter::parse() and NumberFormatter::parseCurrency() to
    reject offset values outside the 32-bit range instead of silently
    truncating them. (Weilin Du)
  . IntlDateFormatter::parse()/datefmt_parse() and
    IntlDateFormatter::localtime()/datefmt_localtime() now raise TypeError
    when the offset argument is not of type int. (Weilin Du)

- JSON:
  . Report unterminated JSON strings as syntax errors. (timwolla)
  . Improve performance error position tracking during JSON decoding.
    (henderkes)
  . Fixed bug GH-22514 (Incorrect error column in PHP 8.6 JSON parser).
    (henderkes, timwolla)

- Opcache:
  . Fixed bug GH-21770 (Infinite recursion in property hook getter in opcache
    preloaded trait). (iliaal)

- OpenSSL:
  . Fixed timeout for supplemental read at end of a blocking stream in SSL
    stream wrapper. (ilutov)
  . Fixed stream_socket_get_crypto_status() after supplemental read. (ilutov)

- PDO_ODBC:
  . Fixed bug GH-20726 (Crash with ODBC connection pooling when the DSN
    carries no credentials). (iliaal)

- PHPDBG:
  . Fixed fleaked lowercased lookup keys in phpdbg_resolve_opline_break.
    (jorgsowa)
  . Fixed off-by-one in phpdbg_safe_class_lookup() causing class lookups to
    always fail during phpdbg's signal-safe interruption path. (jorgsowa)

- Reflection:
  . Fixed bug GH-22683 (Reflection(Class)Constant::__toString() should not warn
    on NAN conversions). (Khaled Alam)
  . Fixed bug GH-22681 (Reflection*::__toString() truncates on null bytes).
    (DanielEScherzer)

- Session:
  . Fixed bug GH-21314 (Different session garbage collector behavior between
    PHP 8.3 and PHP 8.5). (jorgsowa)

- SOAP:
  . Fixed bug GH-22585 (OOM on bailout with uninitialized
    do_request() parameters). (David Carlier)
  . Fixed xsd:hexBinary decoding to reject odd-length values instead of
    silently truncating the last nibble. (Weilin Du)
  . Made SOAP encoding errors report the affected type or failing operation
    instead of the generic "Violation of encoding rules" message. (Weilin Du)

- Standard:
  . Fixed sleep() and usleep() to reject values that overflow the underlying
    unsigned int timeout. (Weilin Du)
  . Fixed bug GH-22671 (assert.bail aborts the process when the assert callback
    throws an exception whose reporting re-throws). (iliaal)
  . Fixed bug GH-22678 (Use-after-free in array_multisort() when the comparator
    mutates the array being sorted). (azchin, iliaal)

- Streams:
  . Fixed bug GH-21468 (Segfault in file_get_contents w/ a https URL
    and a proxy set). (CVE-2026-12184) (ndossche)

- URI:
  . Fixed bug GH-22628 (Percent-encoding of caret in WHATWG URL paths is not
    performed). (kocsismate)
  . Fixed bug GH-22629 (WHATWG Validation error incorrect with empty host and
    non-empty userinfo). (kocsismate)

- Zip:
  . Fixed bug GH-22649 (ZipArchive::setCommentName() and setCommentIndex()
    could crash after overwriting an entry and resetting its inherited
    unchanged comment). (Weilin Du)
  . Fixed bug GH-21705 (ZipArchive::getFromIndex() ignores
    ZipArchive::FL_UNCHANGED for deleted entries). (Weilin Du)
  . Fixed bug GH-22176 (memory leak with ZipArchive::registerCancelBack()
    is used with reference returning function during shutdown).
    (David Carlier)
  . ZipArchive::addGlob() and ZipArchive::addPattern() now raise a TypeError
    for invalid "remove_all_path", "comp_method", "comp_flags", and
    "enc_method" options instead of emitting a warning. (David Carlier)

02 Jul 2026, PHP 8.6.0alpha1

- Core:
  . Added first-class callable cache to share instances for the duration of the
    request. (ilutov)
  . It is now possible to use reference assign on WeakMap without the key
    needing to be present beforehand. (ndossche)
  . Added `clamp()`. (kylekatarnls, thinkverse)
  . Fix OSS-Fuzz #429429090 (Failed assertion on unset() with uninitialized
    container). (ilutov)
  . Fixed GH-20564 (Don't call autoloaders with pending exception). (ilutov)
  . Fix deprecation now showing when accessing null key of an array with JIT.
    (alexandre-daubois)
  . Fixed bug GH-20174 (Assertion failure in
    ReflectionProperty::skipLazyInitialization after failed LazyProxy
    initialization). (Arnaud)
  . Enabled the TAILCALL VM on Windows when compiling with Clang >= 19 x86_64.
    (henderkes)
  . Deprecate specifying a nullable return type for __debugInfo(). (timwolla)
  . Fixed bug GH-22142 (Assertion failure in zendi_try_get_long() on IS_UNDEF).
    (David Carlier)
  . Fixed bug GH-22046 (The unserialize function can lead to segfault when
    non-Serializable internal classes are serialized back with the C format).
    (kocsismate)
  . Fixed bug GH-22292 (AST pretty printing does not correctly handle invalid
    variable names). (timwolla)
  . Fixed bug GH-22291 (AST pretty printing does not correctly handle braces in
    string interpolation). (timwolla)
  . Fixed bug GH-22373 (AST pretty-printing drops meaningful parentheses
    surrounding property access). (timwolla)
  . Fixed GH-22422 (zend_arena layout mismatch leaked memory in separately
    built extensions under AddressSanitizer). (iliaal)
  . TSRM: use local-exec TLS in PIE executables. (henderkes)
  . perf: make all static extensions use TSRMG_STATIC. (henderkes)
  . Fixed bug GH-22257 (type confusion in Exception::getTraceAsString()).
    (David Carlier)
  . TSRM: make CG, EG, SCNG and AG compile-time offsets. (henderkes)
  . Deprecate returning values from __construct() and __destruct(). (timwolla)

- BCMath:
  . Added NUL-byte validation to BCMath functions. (jorgsowa)

- BZ2:
  . Reject oversized input in bzdecompress(). (arshidkv12)

- Curl:
  . Add support for CURLINFO_SIZE_DELIVERED (libcurl >= 8.20.0). (Ayesh)

- Date:
  . Update timelib to 2022.16. (Derick)

- DOM:
  . Removed LIBXML_XINCLUDE from valid options for XMLDocument, as it was a
    no-op. (ndossche)
  . Readonly DOM properties are now declared with asymmetric visibility
    (public private(set)). ReflectionProperty::isWritable() reports them
    correctly, and external writes raise "Cannot modify private(set)
    property" instead of the previous readonly modification error.
    (David Carlier)
  . Fixed Dom\Notation nodes missing tree connection, so that ownerDocument,
    parentNode, isConnected and baseURI now return correct values, and
    textContent returns NULL per the DOM specification. (jordikroon)

- EXIF:
  . Added support for reading EXIF metadata from WebP images (GH-19904).
    (iliaal)

- Fileinfo:
  . Fixed bug GH-20679 (finfo_file() doesn't work on remote resources).
    (ndossche)
  . Fixed bug #66095 (Hide libmagic dynamic symbols). (orlitzky)

- GD:
  . imagesetstyle()/imagefilter()/imagecrop() check array argument entries
    types. (David Carlier)

- GMP:
  . gmp_fact() reject values larger than unsigned long. (David Carlier)
  . gmp_pow/binomial/root/rootrem and shift/pow operators reject values larger
    than unsigned long. (David Carlier)
  . GMP exponentiation and shift operators now emit a deprecation warning
    when converting a float right operand to int loses precision. (Weilin Du)

- Hash:
  . Upgrade xxHash to 0.8.2. (timwolla)

- Intl:
  . Fixed malformed ResourceBundle::get() error message when fallback is
    disabled. (Weilin Du)
  . Added Locale::getDisplayKeyword() and Locale::getDisplayKeywordValue(),
    with the alias of locale_get_display_keyword() and
    locale_get_display_keyword_value() respectively. (Weilin Du)
  . Fix incorrect argument positions for invalid start/end arguments in
    transliterator_transliterate(). (Weilin Du)
  . Fixed IntlTimeZone::getDisplayName() to synchronize object error state
    for invalid display types. (Weilin Du)
  . Fixed Locale::lookup() and locale_lookup() to return NULL instead of the
    fallback locale when a language tag cannot be canonicalized. (Weilin Du)
  . Added IntlNumberRangeFormatter class to format an interval of two numbers
    with a given skeleton, locale, collapse type and identity fallback.
    (BogdanUngureanu)
  . Fixed bug GH-20426 (Spoofchecker::setRestrictionLevel() error message
    suggests missing constants). (DanielEScherzer)
  . Added grapheme_strrev (Yuya Hamada)
  . Passing a non-stringable object as a time zone to Intl time zone
    argument handling now raises TypeError instead of Error. (Weilin Du)
  . IntlBreakIterator::getLocale() now raises ValueError for invalid locale
    types. (Weilin Du)
  . Fixed MessageFormatter::parse() and parseMessage() returning PHP_INT_MIN
    as float rather than int on 64-bit platforms. (Weilin Du)
  . Fixed UConverter::transcode() silently truncating from_subst and to_subst
    option lengths greater than 127 bytes. (Weilin Du)
  . Fixed IntlIterator::current() to return NULL instead of an undefined value
    when the iterator is not positioned on a valid element. (Weilin Du)

- IO:
  . Added new polling API. (Jakub Zelenka)

- JSON:
  . Enriched JSON last error / exception message with error location.
    (Juan Morales)

- Fibers:
  . Fixed bug GH-20483 (ASAN stack overflow with fiber.stack_size INI small
    value). (David Carlier)

- Mail:
  . Fixed bug GH-20862 (null pointer dereference in
    php_mail_detect_multiple_crlf via error_log (jordikroon)

- Mbstring:
  . ini_set() with mbstring.detect_order changes the order of mb_detect_order
    as intended, since mbstring.detect_order is an INI_ALL setting. (tobee94)
  . Added GB18030-2022 to default encoding list for zh-CN. (HeRaNO)
  . Fixed bug GH-20836 (Stack overflow in mb_convert_variables with
    recursive array references). (alexandre-daubois)
  . Fixed bug GH-21223; mb_guess_encoding no longer crashes when passed huge
    list of candidate encodings (with 200,000+ entries). (Jordi Kroon)
  . mbregex has been deprecated. (youkidearitai)

- Mysqli:
  . Added mysqli_quote_string() and mysqli::quote_string(). (Kamil Tekiela)

- Opcache:
  . Fixed bug GH-20051 (apache2 shutdowns when restart is requested during
    preloading). (Arnaud, welcomycozyhom)

- OpenSSL:
  . Added AES-SIV support. (jordikroon)
  . Implemented GH-20310 (No critical extension indication in
    openssl_x509_parse() output). (StephenWall)
  . Added TLS session resumption support for streams with new context options
    and Openssl\Session class. (Jakub Zelenka)
  . Added TLS external PSK support for streams with new context options and
    Openssl\Psk class. (Jakub Zelenka)
  . Added stream crypto status for exposing OpenSSL WANT_READ / WANT_WRITE.
    (Jakub Zelenka)

- PCNTL:
  . pcntl_exec() now throws a ValueError if the $args array is not a list
    array. (Weilin Du)

- PDO_DBLIB:
  . Added dblib_handle_check_liveness handler. (freddy77)

- PDO_PGSQL:
  . Clear session-local state disconnect-equivalent processing.
    (KentarouTakeda)

- PGSQL:
  . Enabled 64 bits support for pg_lo_truncate()/pg_lo_tell() if the server
    supports it. (KentarouTakeda)
  . pg_fetch_object() now surfaces non-instantiable class errors before
    fetching, resolves the constructor via the get_constructor handler, and
    reports the empty-constructor ValueError on the $constructor_args argument.
    (David Carlier)

- Phar:
  . Support reference values in Phar::mungServer(). (ndossche)
  . Invalid values now throw in Phar::mungServer() instead of being silently
    ignored. (ndossche)
  . Fixed a bypass of the magic ".phar" directory protection in
    Phar::addEmptyDir() for paths starting with "/.phar". (Weilin Du)
  . Fixed an integer underflow when parsing ZIP extra fields. (Weilin Du)
  . Phar::addEmptyDir() now allows non-magic directory names that merely
    share the ".phar" prefix. (Weilin Du)
  . Support overridden methods in SplFileInfo for getMTime() and getPathname()
    when building a phar. (ndossche)
  . Mark Phar::buildFromIterator() base directory argument as a path.
    (ndossche)

- Posix:
  . Added validity check to the flags argument for posix_access(). (arshidkv12)

- Reflection:
  . Fixed bug GH-20217 (ReflectionClass::isIterable() incorrectly returns true
    for classes with property hooks). (alexandre-daubois)
  . Added ReflectionConstant::inNamespace(). (Khaled Alam)
  . Added ReflectionProperty::isReadable() and ::isWritable(). (ilutov)
  . Fixed bug GH-21362 (ReflectionMethod::invoke/invokeArgs() did not verify
    Closure instance identity for Closure::__invoke()). (Ilia Alshanetsky)
  . Added ReflectionParameter::getDocComment(). (chschneider)

- Session:
  . Fixed bug 71162 (updateTimestamp never called when session data is empty).
    (Girgias)
  . Null bytes in session.cookie_path, session.cookie_domain, and
    session.cache_limiter are now rejected with a warning. (jorgsowa)
  . session.cookie_samesite now rejects invalid values with a warning; only
    "Strict", "Lax", "None", or "" are accepted. (jorgsowa)
  . session.cookie_lifetime now rejects non-integer and out-of-range values
    with a warning. (jorgsowa)
  . Session file GC now recursively cleans nested subdirectories when
    session.save_path uses the dirdepth prefix. (jorgsowa)
  . Changed defaults of session.use_strict_mode (now 1), session.cookie_httponly
    (now 1) and session.cookie_samesite (now "Lax"). (jorgsowa)

- Shmop:
  . Fixed bug GH-9945 (shmop_open() silently truncates keys outside the key_t
    range). (Weilin Du)

- Soap:
  . Soap::__setCookie() when cookie name is a digit is now not stored and
    represented as a string anymore but a int. (David Carlier)
  . Fixed bug GH-21421 (SoapClient typemap property breaks engine assumptions).
    (ndossche)
  . WSDL/XML Schema parsing now rejects out-of-range integer values for
    occurrence constraints and integer restriction facets. Negative minOccurs
    and maxOccurs values are rejected as well. (Weilin Du)

- Sockets:
  . Added the TCP_USER_TIMEOUT constant for Linux to set the maximum time in
    milliseconds transmitted data can remain unacknowledged. (James Lucas)
  . Added AF_UNSPEC support for sock_addrinfo_lookup() as a sole umbrella for
    AF_INET* family only. (David Carlier)
  . Fixed GH-20532 (socket_addrinfo_lookup gives the error code with a new
    optional parameter). (David Carlier)
  . Added AF_PACKET support completion for socket_sendto()/socket_recvfrom().
    (David Carlier)

- Sodium:
  . Added support for libsodium 1.0.21 IPcrypt and XOF APIs. (jedisct1)
  . pwhash argument-validation errors now throw ValueError instead of
    SodiumException. (iliaal)

- SPL:
  . DirectoryIterator key can now work better with filesystem supporting larger
    directory indexing. (David Carlier)
  . Fixed bug GH-21831 (SplObjectStorage::removeAllExcept() use-after-free with
    re-entrant getHash()). (Pratik Bhujel)
  . Fix bugs GH-8561, GH-8562, GH-8563, and GH-8564 (Fixing various
    SplFileObject iterator desync bugs). (iliaal)
  . Fix bug GH-22062 (SplDoublyLinkedList iterator UAF via destructor releasing
    next node). (David Carlier)

- Sysvshm:
  . Fixed shm_attach() to throw ValueError for keys outside the key_t range.
    (Weilin Du)

- Sqlite3:
  . Fix NUL byte truncation in sqlite3 TEXT column handling. (ndossche)

- Standard:
  . Fixed bug GH-19926 (reset internal pointer earlier while splicing array
    while COW violation flag is still set). (alexandre-daubois)
  . Added form feed (\f) in the default trimmed characters of trim(), rtrim()
    and ltrim(). (Weilin Du)
  . Invalid mode values now throw in array_filter() instead of being silently
    defaulted to 0. (Jorg Sowa)
  . Fixed bug GH-21058 (error_log() crashes with message_type 3 and
    null destination). (David Carlier)
  . Fixed bug GH-13204 (glob() fails if square bracket is in current directory).
    (ndossche)
  . Add array size maximum to array_diff(). (ndossche)
  . Add enum SortDirection. (timwolla)
  . pathinfo() raises a ValueError with an invalid $flags argument.
    (David Carlier)
  . Passing an invalid flag value to the second argument of scandir() will now
    throw a ValueError. (alexandre-daubois)
  . array_change_key_case() now raises a ValueError when an invalid $case
    argument value is passed. (Girgias)
  . linkinfo() now raises a ValueError when the argument is an empty string.
    (Weilin Du)
  . getenv() and putenv() now raises a ValueError when the first argument
    contains NUL bytes. (Weilin Du)
  . dl() now raises a ValueError when the $extension_filename argument contains
    NUL bytes. (Weilin Du)
  . openlog() now raises a ValueError when the $prefix argument contains NUL
    bytes. (Weilin Du)
  . parse_str() now raises a ValueError when the $string argument contains NUL
    bytes. (Weilin Du)
  . proc_open() now raises a ValueError when the $cwd argument contains NUL
    bytes. (Weilin Du)
  . ini_get_all() now includes the built-in default value in the details.
    (sebastian)
  . Fixed bug GH-22171 (Invalid auth header generation in http(s) stream
    wrapper). (David Carlier)
  . Fixed bug GH-17384 (number_format() may exhaust memory with decimals
    outside the range from -2147483648 to 2147483647). (Weilin Du)

- Streams:
  . Added new stream errors API including new StreamException, StreamError
    classes, StreamErrorStore, StreamErrorMode, StreamErrorCode enums,
    stream_last_errors() and stream_clear_errors() functions, error_mode,
    error_store and error_handler stream context options and extending some
    stream functions with context param. (Jakub Zelenka)
  . Added so_keepalive, tcp_keepidle, tcp_keepintvl and tcp_keepcnt stream
    socket context options. (Jakub Zelenka)
  . Added so_reuseaddr streams context socket option that allows disabling
    address reuse. (Jakub Zelenka)
  . Fixed bug GH-20370 (User stream filters could violate typed property
    constraints). (alexandre-daubois)
  . Allowed filtered streams to be casted as fd for select. (Jakub Zelenka)
  . Fixed bug GH-21221 (Prevent closing of innerstream of php://temp stream).
    (ilutov)
  . Improved stream_socket_server() bind failure error reporting. (ilutov)
  . Fixed bug #49874 (ftell() and fseek() inconsistency when using stream
    filters). (Jakub Zelenka)

- URI:
  . Added Uri\Rfc3986\Uri::getUriType() and Uri\WhatWg\Url::isSpecialScheme().
    (kocsismate)
  . Added Uri\Rfc3986\Uri::getHostType() and Uri\WhatWg\Url::getHostType().
    (kocsismate)
  . Added Uri\Rfc3986\UriBuilder. (kocsismate)

- Zip:
  . Fixed bug GH-21682 (ZipArchive instances should not be serializable).
    serialize()/unserialize() now throw unless a subclass overrides
    __serialize()/__unserialize(). (iliaal)
  . Fixed ZipArchive callback being called after executor has shut down.
    (ilutov)
  . Support minimum version for libzip dependency updated to 1.0.0.
    (David Carlier)
  . Added ZipArchive::openString() method.
    (Tim Starling, Soner Sayakci, Ghaith Olabi)

- Zlib:
  . deflate_init() now raises a TypeError when the value for option
    "level", "memory", "window", or "strategy" is not of type int.
    (Weilin Du)
  . inflate_init() now raises a TypeError when the value for option
    "window" is not of type int. (Weilin Du)

<<< NOTE: Insert NEWS from last stable release here prior to actual release! >>>
