PHP                                                                        NEWS
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?? ??? ????, PHP 8.6.0RC1


10 Sep 2026, PHP 8.6.0beta3

- BCMath:
  . Fixed out-of-bounds read in bc_is_zero_for_scale() when scale exceeds
    n_scale. (Ilia Alshanetsky)

- Core:
  . Fixed out-of-bounds reads during automatic UTF-16/32 encoding detection.
    (Yudai Takada)
  . Calling is_a() or is_subclass_of() with a string as the first argument
    when $allow_string is false is now deprecated. (Daniel Scherzer)
  . Fixed bug GH-23232 (lone namespace separator asks the autoloader for an
    empty class name). (spawnia)

- CLI:
  . Fixed bug GH-23242 (PHP development server does not support Expect
    100-continue flow control). (Sjoerd Langkemper)

- DOM:
  . Fixed NamedNodeMap::getNamedItemNS() with an empty URI not matching
    the null namespace in spec-following mode. (Ilia Alshanetsky)
  . Fixed stale getElementsByClassName() and other node list caches after
    className/classList writes and attribute removals. (Ilia Alshanetsky)

- Hash:
  . Fixed hash_file() reporting argument #1 ($algo) instead of argument #2
    ($filename) when the filename contains null bytes. (lacatoire)

- Intl:
  . Fixed grapheme_strpos() and grapheme_strrpos() with an empty needle
    returning UTF-16 offsets instead of grapheme offsets. (Ilia Alshanetsky)
  . Fixed a memory leak when dumping IntlCalendar instances. (Ilia Alshanetsky)
  . Fixed Collator::sortWithSortKeys() allocating fixed 2MiB buffers
    regardless of array size. (Ilia Alshanetsky)
  . Fixed a memory leak when iterating IntlBreakIterator::getPartsIterator()
    results. (iliaal)
  . Fixed a leak in Locale::getKeywords() when a keyword value cannot be
    read. (iliaal)
  . Fixed a use-after-free when IntlRuleBasedBreakIterator is constructed
    from compiled rules. (iliaal)
  . Fixed Spoofchecker methods not recording the ICU error code when an ICU
    call fails. (Ilia Alshanetsky)
  . Fixed idn_to_ascii() and idn_to_utf8() reporting argument #2 ($flags)
    instead of argument #3 ($variant) for an invalid IDNA variant, and the
    domain length error message printing a literal "d" instead of the limit.
    (lacatoire)

- MBString:
  . Fixed mb_ereg_replace() emitting a NUL or out-of-bounds bytes in the
    replacement when a \k<name> backref has no closing delimiter.
    (Ilia Alshanetsky)

- ODBC:
  . Fixed odbc_field_len(), odbc_field_scale() and odbc_field_type()
    returning uninitialized memory when SQLColAttribute fails.
    (Ilia Alshanetsky)
  . odbc_error() and odbc_errormsg() now also report SQLColAttribute
    failures. (Ilia Alshanetsky)

- PCNTL:
  . Fixed the declared signature of pcntl_signal(), whose $restart_syscalls
    argument accepts null and defaults to it. (lacatoire)

- PDO_PGSQL:
  . Added Pdo\Pgsql::ATTR_CHUNK_SIZE to fetch a result set in chunks of the
    given number of rows. (KentarouTakeda)

- PGSQL:
  . Fixed the pg_insert(), pg_update() and pg_delete() flag error messages,
    which did not name the set of flags actually accepted. (lacatoire)

- Phar:
  . Fixed bug GH-23418 (Use-after-free when looking up mounted directories).
    (Weilin Du)
  . Fixed bug GH-23477 (Memory leak on duplicate native Phar manifest entries).
    (Weilin Du)

- Sockets:
  . Fixed socket_set_option() with SO_ATTACH_REUSEPORT_CBPF and a zero value,
    which detached the classic BPF filter instead of the reuseport program.
    (David Carlier)

- SOAP:
  . Fixed WSDL cache corruption when a soap:header defines headerfaults.
    (Ilia Alshanetsky)
  . Fixed stack overflow when parsing a WSDL with self-referential schema
    groups or attributeGroups. (Ilia Alshanetsky)

- Sodium:
  . Added support for the libsodium 1.0.22 KEM APIs (X-Wing and ML-KEM768).
    (Zachary DuBois)

- Standard:
  . Fixed a segfault when a stream filter callback unsets StreamBucket::$data
    before re-attaching the bucket. (iliaal)
  . Fixed an out-of-bounds read when following a redirect response with an
    empty Location header. (iliaal)
  . Fixed read buffer compaction in php_stream_filter_flush(). (crystarm)
  . Io\Poll\Context::wait() now rejects a $maxEvents value greater than
    INT_MAX instead of truncating it. (marc-mabe)
  . Fixed GH-23338 (fsockopen()/pfsockopen() ValueError reported wrong
    argument number for $timeout). (lacatoire)
  . Fixed bug GH-23576 (Next index for array returned from array_keys() is
    wrong). (Lazizbek Ergashev)

- SimpleXML:
  . Fixed writing to a dimension of the object returned by attributes() not
    creating the attribute. (Ilia Alshanetsky)
  . Fixed child elements of the element returned by
    SimpleXMLElement::addChild() not being accessible by property name when
    namespaces are involved. (Ilia Alshanetsky)

- Streams:
  . Added so_rcvbuf and so_sndbuf stream socket context options, setting the
    socket receive and send buffer sizes in bytes. (David Carlier)


27 Aug 2026, PHP 8.6.0beta2

- Core:
  . Fixed bug GH-15375 (Nested "yield from" skips items after a valid() or
    next() call on the inner generator). (iliaal)
  . Fixed GH-10497 (Allow direct mutation of objects stored in constants or
    class constants via OBJ->prop = $val). (Khaled Alam)
  . Reverted GH-22833, which attempted to fix bug GH-18985. (ilutov)
  . Using the return statement in a finally block is now deprecated.
    (aldemeery)

- Curl:
  . Set content length using CURLOPT_POSTFIELDSIZE_LARGE instead of
    CURLOPT_POSTFIELDSIZE. This makes it possible to post strings larger than
    2GB on some platforms, e.g. Windows. (Sjoerd Langkemper)

- DOM:
  . Fixed a typo in the DOMException message for INUSE_ATTRIBUTE_ERR.
    (Weilin Du)
  . Fixed bug GH-22624 (use-after-free via DOMNameSpaceNode after
    DOMDocument::xinclude()). (David Carlier)
  . Fixed a use-after-free when cloning a DOMNameSpaceNode after
    DOMDocument::xinclude(). (iliaal)
  . Fixed a crash in DOMXPath when a php:function callback receives a nodeset
    and a later callback returns a node from another document. (iliaal)
  . Fixed bug GH-23331 (UAF when node_list_unlink() skips attribute children
    that still have a live wrapper). (iliaal)
  . Fixed a use-after-free when Dom\Element::setAttributeNS() replaces the
    value of an attribute whose child still has a live wrapper. (iliaal)

- GD:
  . Fixed imageaffinematrixget() and imageaffinematrixconcat() reporting the
    wrong argument in error messages. (Weilin Du)
  . Fixed imageaffinematrixget() to enforce the documented array|float type
    for the $options parameter. (Weilin Du)

- Intl:
  . Fixed grapheme_strrev() treating UBRK_DONE as a byte index and leaving
    the result without a terminating NUL. (iliaal)
  . Fixed a double-free when IntlGregorianCalendar construction fails after
    the ICU constructor adopts the TimeZone. (iliaal)
  . Fixed bug GH-23094 (NumberFormatter parsing offsets use UTF-16 positions
    for UTF-8 strings). (ColumbusLabs)
  . Fixed Locale::parseLocale() reading past a trailing '-' or '_'.
    (iliaal, Xuyang Zhang)
  . Fixed grapheme_str_split() treating UBRK_DONE as a byte index. (iliaal)

- Opcache:
  . Fixed a tracing JIT crash when compiling a side trace for a method of a
    class that could not be stored in the inheritance cache. (GH-21710)
    (Arnaud, iliaal)

- PDO:
  . Fixed a leak when a persistent connection failed a liveness check
    with no other live PDO handle. (iliaal)

- PDO_PGSQL:
  . Fixed several lazy fetch (PDO::ATTR_PREFETCH => 0) defects: an infinite
    loop when cleaning up a fetch left in a COPY, a use-after-free when a
    statement with emulated or disabled prepares is destroyed, a connection
    left busy for the next fetch, and rows delivered from a result another
    statement took over. (KentarouTakeda)

- PGSQL:
  . Fixed the class name casing of pg_close_stmt()'s connection parameter.
    (lacatoire)

- Phar:
  . Fixed Phar archives being automatically detected when ".phar" only occurs
    in a directory name or is not a filename extension in an included file's
    path. (Weilin Du)

- Readline:
  . Fixed class constant completion in the interactive shell. (Weilin Du)

- Zip:
  . Fixed bug GH-23276 (ZipArchive subclass storing its own stream cannot be
    garbage collected). (Weilin Du, ndossche)

- SAPI:
  . Fixed fuzzer targets failing to build in isolation. (Mrmaxmeier)
  . Fixed returns uninitialized value on LiteSpeed lsapi SAPI (Go Kudo)

- Session:
  . Fixed bug GH-23056 (missing handler name in session write warning).
    (lazerg)
  . SessionHandler::validateId() is now implemented, so
    session.use_strict_mode applies to the built-in handler. (Girgias)
  . It is now deprecated to pass an object that does not implement the
    create_sid() and validateId() methods. (Girgias)
  . A deprecation is now emitted when implementing SessionHandlerInterface on a
    class which doesn't define the create_sid() or validateId() methods, as
    those will be moved from SessionUpdateTimestampHandlerInterface and
    SessionIdInterface to SessionHandlerInterface. (Girgias)

- SNMP:
  . It is now possible to use the AES192, AES192C, AES256, and AES256C as
    SNMPv3 security protocols if the underlying library supports them.
    (eskyuu)
  . It is now possible to reset the MIB tree using the new snmp_init_mib()
    function. (eskyuu)
  . Additional MIB parsing and output control functionality has been exposed
    via the snmp_set_mib_option(), snmp_set_output_option(),
    snmp_set_string_output_format() functions, the $numeric_index,
    $numeric_timeticks, $extended_index, $dont_print_units, $escape_quotes,
    $print_hex_text SNMP properties, and the SNMP::setOidOutputFormat(),
    SNMP::setStringOutputFormat() methods. (eskyuu)

- Sodium:
  . Fixed incorrect parameter name in sodium_add(), sodium_memcmp(), and
    sodium_compare() length-mismatch error messages. (lacatoire)

- SPL:
  . The following SplFileObject methods have been deprecated
    SplFileObject::fgetcsv(), SplFileObject::fputcsv(),
    SplFileObject::setCsvControl(), and SplFileObject::getCsvControl().
    (Girgias)

- Standard:
  . Fixed incorrect parameter name in convert_uudecode() warning. (lacatoire)
  . Added support for the "<" and ">" endianness modifiers in pack() and
    unpack() format codes. (alexandre-daubois)

- Zip:
  . Fixed bug GH-17787 (ZipArchive stream stops reading early when the archive
    is freed while the stream is still open). (Eyüp Can Akman)

- Zlib:
  . Fixed bug GH-22142 (Assertion failure in deflate_init() when an option
    object has uninitialised typed properties). (David Carlier)

13 Aug 2026, PHP 8.6.0beta1

- Core:
  . Deprecated "namespace" as a class constant name. (NickSdot)
  . Changed run-tests.php to run in parallel by default, using up to 10
    automatically detected workers. Pass -j1 for sequential execution.
    (NickSdot)
  . Allowed readonly properties to declare default values. (NickSdot)
  . Changed run-tests.php to run test subprocesses without a shell where
    possible. (NickSdot)
  . Fixed GH-23083 (SEGV build_trace_args in zend_exceptions.c with
    -d error_include_args=On). (David Carlier)
  . Fixed GH-23121 (is_callable() wrongly accepts objects with no get_closure
    handler). (David Carlier)
  . Passing a 3rd argument to define() is now deprecated. (Girgias)
  . Naming a function readonly is now deprecated. (Girgias)
  . Added stateless closure cache. (ilutov)

- BZ2:
  . Passing an object for the Bzip2 {de}compression stream filter is now
    deprecated. Use get_object_vars() on the object instead. (Girgias)

- Curl:
  . Improved cURL option validation errors to include the option name.
    (Sjoerd Langkemper)
  . Raise a value error when the callback registered with CURLOPT_READFUNCTION
    returns an unexpected long. (Sjoerd Langkemper)
  . Fix bug GH-16513 (curl: exceptions in callbacks do not abort the request).
    (Sjoerd Langkemper)

- Date:
  . Update timelib to 2026.02. (Derick, timwolla)
  . Added Time\Duration. (timwolla, Derick)

- DOM:
  . Fixed bug GH-23116 (Stack overflow when normalizing a deeply nested
    DOMDocument). (Lazizbek Ergashev)
  . Fixed bug GH-23117 (Stack overflow when normalizing a deeply nested
    Dom\XMLDocument). (Lazizbek Ergashev)

- Exif:
  . Fixed exif_read_data() allocating a HEIF meta box larger than the file
    it came from. (iliaal)

- GMP:
  . Added optional $definitely_prime output parameter to gmp_prevprime().
    (Weilin Du)
  . Added gmp_powm_sec(). (Weilin Du)

- Intl:
  . Added static methods IntlDatePatternGenerator::getSkeleton() and
    IntlDatePatternGenerator::getBaseSkeleton(). (Weilin Du)
  . Fixed Collator::sort(), collator_sort(), Collator::asort(), and
    collator_asort() to report UTF-8/UTF-16 conversion errors through the intl
    error handler instead of emitting a warning and continuing with an empty
    string. (Weilin Du)
  . Fixed IntlListFormatter::__construct() leaving stale global error state
    after successful calls. (Weilin Du)
  . Fixed IntlNumberRangeFormatter leaving stale global error state after
    successful createFromSkeleton() and format() calls. (Weilin Du)
  . Implemented GH-20255 (Add a predefined calendar constant in
    IntlDateFormatter for the proleptic gregorian calendar). (David Carlier)
  . Added SpoofChecker::areBidiConfusable(). (David Carlier)
  . Added SpoofChecker::getBidiSkeleton(). (Weilin Du)
  . Added SpoofChecker::getSkeleton(). (David Carlier)
  . Fixed IntlNumberRangeFormatter::format() crash when the formatting fails.
    (David Carlier)

- MbString:
  . Passing objects to mb_convert_variables() is now deprecated. (Girgias)

- MySQLi:
  . The mysqli_get_charset() function and mysqli::get_charset() method are now deprecated. (Kamil Tekiela)
  . The mysqli_stmt_init() function and mysqli::stmt_init() method are now deprecated. (Kamil Tekiela)
  . Instantiation of mysqli_stmt without providing the $query parameter is now deprecated. (Kamil Tekiela)

- PDO:
  . Fixed pdo_raise_impl_error() emitting a warning under ERRMODE_SILENT.
    (iliaal)

- PDO_ODBC:
  . Fixed bug GH-23016 (NULL values in long columns come back as garbage
    binary strings). (Calvin Buckley, iliaal)

- Readline:
  . Fixed the interactive shell not waiting for the pager process to exit.
    (Weilin Du)

- Reflection:
  . Added ReflectionAttribute::inNamespace(),
    ReflectionAttribute::getNamespaceName(), and
    ReflectionAttribute::getShortName(). (Girgias)
  . Fixed bug GH-22905 (Reflection exception messages truncate on null bytes).
    (DanielEScherzer)
  . Fixed ReflectionProperty::isLazy() and skipLazyInitialization() using the
    parent slot when a child class hooks an inherited property. (iliaal)
  . Fixed segfault in ReflectionMethod::createFromMethodName() on an
    uninstantiable subclass. (iliaal)

- SimpleXML:
  . Fixed integer element offsets that cannot resolve aliasing an existing
    element. (iliaal)
  . SimpleXMLElement::__construct() now raises a ValueError when the $data
    argument contains NUL bytes. (iliaal)
  . Fixed segfault when comparing uninitialized SimpleXMLElement
    instances. (iliaal)

- SPL:
  . The spl_classes() function is now deprecated, use
    ReflectionExtension::getClassNames() instead. (Girgias)
  . The spl_object_hash() function is now deprecated, use spl_object_id()
    instead. (Girgias)
  . The following ArrayIterator methods are now deprecated:
    * ArrayIterator::getFlags()
    * ArrayIterator::setFlags()
    * ArrayIterator::asort()
    * ArrayIterator::ksort()
    * ArrayIterator::uasort()
    * ArrayIterator::uksort()
    * ArrayIterator::natsort()
    * ArrayIterator::natcasesort()
    * ArrayIterator::unserialize()
    * ArrayIterator::serialize()
    (Girgias)

- Standard:
  . Passing an object as the $data argument to http_build_query() is now
    deprecated. The interpretation of object values within $data as arrays
    is also deprecated. Convert objects to arrays with get_object_vars()
    before calling the function. (Girgias)
  . Added the "filter.max_filter_count" stream context option for php://filter
    URLs. Using more than 16 filters without configuring this option is now
    deprecated. (Sjoerd Langkemper)
  . The metaphone() function is now deprecated, use a userland phonetic
    matching library instead. (Weilin Du)
  . Improved performance of array_intersect(). (mehmetcansahin)
  . Fixed bug GH-23006 (phpcredits() full-page HTML title says phpinfo()).
    (Weilin Du)
  . The following functions now raise a ValueError when the $filename argument
    contains NUL bytes: fileperms(), fileinode(), filesize(), fileowner(),
    filegroup(), fileatime(), filemtime(), filectime(), filetype(),
    is_writable(), is_readable(), is_executable(), is_file(), is_dir(),
    is_link(), file_exists(), lstat(), stat(). (Girgias)
  . Fixed bug GH-22818 (stream_filter_register() orphaned user_filter_map on
    shutdown re-registration). (David Carlier)
  . Io\Poll\Context::wait() now takes a Time\Duration object as a timeout.
    (timwolla)
  . Passing an object to array_walk{_recursive} is now deprecated. Use
    get_object_vars() on the object instead. (Girgias)
  . The is_double() function is now deprecated, use is_float() instead.
    (Girgias)
  . The is_long() and is_integer() functions are now deprecated, use is_int()
    instead. (Girgias)
  . The doubleval() function is now deprecated, use floatval() instead.
    (Girgias)
  . The strcoll() function is now deprecated, use Collator::compare() instead.
    (Girgias)
  . The SORT_LOCALE_STRING constant for the family of sort functions is now
    deprecated, use one of the following functions instead:
    * Collator::sort()
    * Collator::asort()
    * Collator::sort()
    * Collator::sortWithSortKeys()
    (Girgias)

- Streams:
  . Fixed file_put_contents() LOCK_EX early return leaking stream error
    operation depth. (iliaal)

- XSL:
  . Fixed use-after-free when a DOMDocument subclass __clone() retains the
    stylesheet copy made by XSLTProcessor::importStylesheet(). (iliaal)

- Zlib
  . Passing an object for the zlib deflate and inflate stream filter is now
    deprecated. Use get_object_vars() on the object instead. (Girgias)
  . Passing an object to the $option argument to deflate_init and inflate_init
    is now deprecated. Use get_object_vars() on the object instead. (Girgias)

30 Jul 2026, PHP 8.6.0alpha3

- Core:
  . Implemented partial function application RFC. (Arnaud)
  . Fixed bug GH-22263 (reset typed property default on every unserialize
    failure path). (David Carlier)
  . Fixed bug GH-18985 (Wrong line numbers for match with constant arms).
    (ilutov)
  . Fixed bug GH-18847 (SEGV in zend_fetch_debug_backtrace() when the memory
    limit is reached while the tracing JIT enters a call frame). (Arnaud,
    iliaal)

- DOM:
  . Fixed bug GH-22825 (DOMElement::setAttribute() fails silently when the DTD
    declares a default value for the attribute). (iliaal)
  . Fixed bug GH-23120 (Stack overflow when comparing deeply nested DOM nodes
    with DOMNode::isEqualNode()). (Weilin Du)

- Embed:
  . Made php-cli functionality available in embed builds. (henderkes)

- GMP:
  . Added gmp_prevprime(). (Weilin Du, David Carlier)
  . Fixed GMP power and shift operators to reject GMP right operands outside
    the unsigned long range instead of silently truncating them. (Weilin Du)
  . Fixed GMP integer string parsing to reject strings containing NUL bytes
    instead of silently truncating them. (Weilin Du)
  . Fixed GMP error messages that referenced outdated parameter names.
    (Weilin Du)

- Intl:
  . Fixed grammatical issues in Normalizer invalid form and IntlCalendar time
    zone offset error messages. (Weilin Du)
  . Removed the dependency on the ICU IO library. (Weilin Du)

- ODBC:
  . Fixed bug GH-22668 (Heap buffer over-read when a column value exceeds the
    driver-reported display size). (iliaal)

- Opcache:
  . Re-enable JIT for ZTS builds on Apple Silicon. (realFlowControl)

- PDO_ODBC:
  . Fixed bug GH-22667 (Heap buffer over-read when a column value exceeds the
    driver-reported display size). (iliaal)
  . Fixed bug GH-22666 (Heap buffer overflow when an output parameter value is
    longer than the declared maxlen). (iliaal)
  . Fixed bug GH-22665 (Out-of-bounds write when the ODBC driver reports a
    diagnostic message length beyond the error buffer). (iliaal)

- Phar:
  . Fixed grammatical issues and outdated terminology in Phar error messages.
    (Weilin Du)

- Reflection:
  . Fixed bug GH-22681 (Reflection*::__toString() truncates on null bytes).
    (DanielEScherzer)

- SOAP:
  . Fixed header injection through the Content-Type context option, the
    soapaction and the cookie names and values. (David Carlier)
  . Fixed the SoapClient and SoapServer "classmap" option to reject arrays
    containing integer keys, and made SoapClient throw TypeError/ValueError
    for invalid "classmap" options. (Weilin Du, David Carlier)

- MBString:
  . Fixed bug GH-22779 (mb_strrpos() returns the wrong position for a negative
    offset in a non-UTF-8 encoding). (Eyüp Can Akman)
  . Fixed bug GH-21036 (mb_ereg_search_getregs() crashes after mb_eregi()
    invalidates the regex cache). (Matthias Goergens)

- PCRE:
  . Fixed bug GH-21134 (Crash with \C + UTF-8). Using \C in UTF-8 patterns is
    now forbidden. (Arnaud)

- Sockets:
  . Fixed socket_set_option() validation error messages for UDP_SEGMENT and
    TCP_USER_TIMEOUT, and SO_LINGER options. (Weilin Du)
  . Fixed various memory related issues in ext/sockets. (David Carlier)

- Standard:
  . Fixed setlocale() to reject locale names containing NUL bytes instead of
    silently truncating them, and to reject arrays passed after the $locales
    argument or additional arguments passed after an array $locales argument.
    (Weilin Du)

- Streams:
  . Added a new IO copy API used by php_stream_copy_to_stream_ex() that
    leverages platform primitives (sendfile, splice, copy_file_range,
    TransmitFile) for faster stream copying. (Jakub Zelenka, David Carlier)
  . Fixed bug GH-22841 (php_stream_copy_to_stream_ex() drops progress
    notifications when using the copy fast path). (David Carlier)
  . Fixed bug GH-15836 (Use-after-free when a user stream filter accesses
    $this->stream during the close flush). (iliaal)

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:
  . Added $salt_length parameter to openssl_sign() and openssl_verify() with
    new OPENSSL_RSA_PSS_SALTLEN_* constants. (Jakub Zelenka)
  . 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 not 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)
  . base_convert, bindex, hexdec and octdec now raise a notice when they cannot
    precisely convert the given number. (Sjoerd Langkemper)
  . Added error_include_args INI option to make the display of function
    arguments consistent in error output. (Calvin Buckley)

- 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 TLS 1.3 early data (0-RTT) support for streams with new context
    options early_data, max_early_data and early_data_cb. (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)

- phpdbg:
  . Fixed GH-22480 (Use-after-free when re-watching an already-watched
    variable). (iliaal)

- 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 resuse. (Jakub Zelenka)
  . Added so_linger stream socket context option. (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! >>>