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PHP 8.5 Thursday, 27 August 2026

PHP 8.5.10

34 changes across 19 components.

Core

  • Fixed bug GH-22782 (Const expr FCC crashes under preloading).
  • Fixed bug GH-23088 (Stack overflow when comparing deeply nested arrays).

Date

  • Fixed leak on double DatePeriod::__construct() call.

DOM

  • Fixed bug GH-23116 (Stack overflow when normalizing a deeply nested DOMDocument).
  • Fixed bug GH-23117 (Stack overflow when normalizing a deeply nested Dom\XMLDocument).
  • Fixed bug GH-22825 (DOMElement::setAttribute() fails silently when the DTD declares a default value for the attribute).
  • Fixed bug GH-23120 (Stack overflow when comparing deeply nested DOM nodes with DOMNode::isEqualNode()).

Exif

  • Fixed exif_read_data() allocating a HEIF meta box larger than the file it came from.

Intl

  • Fixed IntlListFormatter::__construct() leaving stale global error state after successful calls.

Opcache

  • Fixed GH-22693 (DT_TEXTREL in JIT-generated TLS access on x86_64).
  • Fixed bug GH-22763 (JIT fails to clear ZREG_TYPE_ONLY after setting reg).
  • Fixed bug GH-22857 (Function JIT emits wrong code for FETCH_OBJ_FUNC_ARG on a property hook getter, losing register-held variables).
  • Fixed bug GH-22916 (Preserve parent regs in zend_jit_deoptimizer_start()).

OpenSSL

  • Fix missing error check on invalid alpn protocols.

MBString

  • Fixed bug GH-22779 (mb_strrpos() returns the wrong position for a negative offset in a non-UTF-8 encoding).
  • Fixed bug GH-21036 (mb_ereg_search_getregs() crashes after mb_eregi() invalidates the regex cache).

PCRE

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

PDO_ODBC

  • Fixed bug GH-23016 (NULL values in long columns come back as garbage binary strings).

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.

Reflection

  • Fixed bug GH-22905 (Reflection exception messages truncate on null bytes).
  • Fixed ReflectionProperty::isLazy() and skipLazyInitialization() using the parent slot when a child class hooks an inherited property.
  • Fixed segfault in ReflectionMethod::createFromMethodName() on an uninstantiable subclass.

Session

  • Fix corruption in mod_mm.
  • Fixed bug GH-23043 (broken session id code can cause zend_mm_heap corrupted).

SimpleXML

  • Fixed integer element offsets that cannot resolve aliasing an existing element.
  • Fixed segfault when comparing uninitialized SimpleXMLElement instances.

Sockets

  • Fixed socket_set_option() validation error messages for UDP_SEGMENT and SO_LINGER options.
  • Fixed various memory related issues in ext/sockets.

SQLite

  • Fix leak when trying to close db if blob stream is still open.

Standard

  • Fixed bug GH-23111 (Stack overflow in array_walk_recursive() with deeply nested arrays).
  • Fixed bug GH-23113 (Stack overflow in array_replace_recursive() with deeply nested arrays).
  • Fixed bug GH-23115 (Stack overflow in compact() with deeply nested arrays).

Streams

  • Fixed bug GH-15836 (Use-after-free when a user stream filter accesses $this->stream during the close flush).

XSL

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