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PHP 8.4 Thursday, 12 March 2026

PHP 8.4.19

28 changes across 13 components.

Core

  • Fixed bug GH-21029 (zend_mm_heap corrupted on Aarch64, LTO builds).
  • Fixed bug GH-20657 (Assertion failure in zend_lazy_object_get_info triggered by setRawValueWithoutLazyInitialization() and newLazyGhost()).
  • Fixed bug GH-20504 (Assertion failure in zend_get_property_guard when accessing properties on Reflection LazyProxy via isset()).
  • Fixed OSS-Fuzz #478009707 (Borked assign-op/inc/dec on untyped hooked property backing value).
  • Fixed bug GH-21215 (Build fails with -std=).
  • Fixed bug GH-13674 (Build system installs libtool wrappers when using slibtool).

Curl

  • Fixed bug GH-21023 (CURLOPT_XFERINFOFUNCTION crash with a null callback).
  • Don't truncate length.

Date

  • Fixed bug GH-20936 (DatePeriod::__set_state() cannot handle null start).
  • Fix timezone offset with seconds losing precision.

DOM

  • Fixed bug GH-21077 (Accessing Dom\Node::baseURI can throw TypeError).
  • Fixed bug GH-21097 (Accessing Dom\Node properties can can throw TypeError).

MBString

  • Fixed bug GH-21223; mb_guess_encoding no longer crashes when passed huge list of candidate encodings (with 200,000+ entries).

Opcache

  • Fixed bug GH-20718 ("Insufficient shared memory" when using JIT on Solaris).
  • Fixed bug GH-21227 (Borked SCCP of array containing partial object).
  • Fixed bug GH-21052 (Preloaded constant erroneously propagated to file-cached script).

OpenSSL

  • Fix a bunch of leaks and error propagation.

PCNTL

  • Fixed pcntl_setns() internal errors handling regarding errnos.
  • Fixed cpuset leak in pcntl_setcpuaffinity on out-of-range CPU ID on NetBSD/Solaris platforms.
  • Fixed pcntl_signal() signal table registering the callback first OS-wise before the internal list.
  • Fixed pcntl_signal_dispatch() stale pointer and exception handling.

PCRE

  • Fixed preg_match memory leak with invalid regexes.
  • Fixed pcre2_code leak when pcre2_pattern_info() fails after a successful pcre2_compile(), and match_sets/match_data/marks leaks in php_pcre_match_impl().

PDO_PGSQL

  • Fixed bug GH-21055 (connection attribute status typo for GSS negotiation).

PGSQL

  • Fixed bug GH-21162 (pg_connect() memory leak on error).

Sockets

  • Fixed bug GH-21161 (socket_set_option() crash with array 'addr' entry as null).
  • Fixed possible addr length overflow with socket_connect() and AF_UNIX family sockets.

Windows

  • Fixed compilation with clang (missing intrin.h include).