PHP 8.3.0: Downloads, Changelog, News

Release Information

PHP Version
PHP 8.3
Release Date
Release Type
Bug Fix Release
Release Status
Use PHP 8.3.8 instead
Branch Status
Supported (Latest)

PHP 8.3.0 is an old release of PHP 8.3 series. Using the latest version PHP 8.3.8 is highly recommended.
PHP 8.3 continues to receive bug fixes and security fixes until 2025-12-31.


Source Code

Git Clone
Use Git to clone the 8.3.0 tag from the PHP Git repository.
git clone --depth 1 --branch php-8.3.0
How to compile PHP
PHP can be compiled by setting up the dependencies, building the configure script (./buildconf), configuring the build ./configure, and running make.
Detailed articles on how to compile PHP are available for Ubuntu/Debian based systems and Fedora/RHEL based systems.

Windows binaries

Non-Thread Safe Builds
Non-Thread Safe (NTS) builds are single-threaded PHP builds. They can be used on web servers that integrate PHP over FastCGI protocol, such as Nginx, Caddy, and IIS.
Thread-Safe Builds
Thread-Safe (TS) builds are multi-thread PHP builds, often used to integrate PHP as a Server API for multithreaded servers. The most common use case is using PHP as an Apache module.

Docker/Podman Containers

PHP CLI Containers images only include the PHP CLI, and no FPM or Apache modules. The Alpine builds are lightweight, but may introduce incompatibilities due to their musl builds. Albeit their larger size, the Debian-based (without the "-alpine" suffix) images are more complete, and widely used.

Alpine-based: Lightweight, but may introduce incompatibilities due to their musl builds.
docker pull php:8.3.0-cli-alpine

Debian-based: More compatible with other components, complete, and are widely used.
docker pull php:8.3.0-cli
PHP CLI + Web Server Integration
These container images include PHP CLI, and a web server integration. FPM container images can be integrated with web servers such as Nginx, Caddy, and Apache with Event MPM. The Apache container images include Apache web server, integrating PHP as an Apache module.

Alpine-based: Lightweight, but may introduce incompatibilities due to their musl builds.
docker pull php:8.3.0-fpm-alpine

Debian-based ZTS Apache: Includes Apache web server integrating PHP as an Apache module.
docker pull php:8.3.0-apache

Debian-based NTS FPM: PHP-FPM, can be integrated with Nginx, Caddy, and other web servers over Fast CGI.
docker pull php:8.3.0-fpm



  • Fixed GH-11761 (removing trailing zeros from numbers)


  • Added pdeathsig to builtin server to terminate workers when the master process is killed.
  • Fixed bug GH-11104 (STDIN/STDOUT/STDERR is not available for CLI without a script).
  • Implement GH-10024 (support linting multiple files at once using php -l).


  • Fix GH-11388 (Allow "final" modifier when importing a method from a trait).
  • Fixed bug GH-11406 (segfault with unpacking and magic method closure).
  • Fixed bug GH-9388 (Improve unset property and __get type incompatibility error message).
  • SA_ONSTACK is now set for signal handlers to be friendlier to other in-process code such as Go's cgo.
  • SA_ONSTACK is now set when signals are disabled.
  • Fix GH-9649: Signal handlers now do a no-op instead of crashing when executed on threads not managed by TSRM.
  • Added shadow stack support for fibers.
  • Fix bug GH-9965 (Fix accidental caching of default arguments with side effects).
  • Implement GH-10217 (Use strlen() for determining the class_name length).
  • Fix bug GH-8821 (Improve line numbers for errors in constant expressions).
  • Fix bug GH-10083 (Allow comments between & and parameter).
  • Zend Max Execution Timers is now enabled by default for ZTS builds on Linux.
  • Fix bug GH-10469 (Disallow .. in open_basedir paths set at runtime).
  • Fix bug GH-10168, GH-10582 (Various segfaults with destructors and VM return values).
  • Fix bug GH-10935 (Use of trait doesn't redeclare static property if class has inherited it from its parent).
  • Fix bug GH-11154 (Negative indices on empty array don't affect next chosen index).
  • Fix bug GH-8846 (Implement delayed early binding for classes without parents).
  • Fix bug #79836 (Segfault in concat_function).
  • Fix bug #81705 (type confusion/UAF on set_error_handler with concat operation).
  • Fix GH-11348 (Closure created from magic method does not accept named arguments).
  • Fix GH-11388 (Allow "final" modifier when importing a method from a trait).
  • Fixed bug GH-11406 (segfault with unpacking and magic method closure).
  • Fixed bug GH-11507 (String concatenation performance regression in 8.3).
  • Fixed GH-11488 (Missing "Optional parameter before required" deprecation on union null type).
  • Implement the #[\Override] attribute RFC.
  • Fixed bug GH-11601 (Incorrect handling of unwind and graceful exit exceptions).
  • Added zend_call_stack_get implementation for OpenBSD.
  • Add stack limit check in zend_eval_const_expr().
  • Expose time spent collecting cycles in gc_status().
  • Remove WeakMap entries whose key is only reachable through the entry value.
  • Resolve open_basedir paths on INI update.
  • Fixed oss-fuzz #60741 (Leak in open_basedir).
  • Fixed segfault during freeing of some incompletely initialized objects due to OOM error (PDO, SPL, XSL).
  • Introduced Zend guard recursion protection to fix __debugInfo issue.
  • Fixed oss-fuzz #61712 (assertion failure with error handler during binary op).
  • Fixed GH-11847 (DTrace enabled build is broken).
  • Fixed OSS Fuzz #61865 (Undef variable in ++/-- for declared property that is unset in error handler).
  • Fixed warning emitted when checking if a user stream is castable.
  • Fixed bug GH-12123 (Compile error on MacOS with C++ extension when using ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX).
  • Fixed bug GH-12189 (#[Override] attribute in trait does not check for parent class implementations).
  • Fixed OSS Fuzz #62294 (Unsetting variable after ++/-- on string variable warning).
  • Fixed buffer underflow when compiling memoized expression.
  • Fixed oss-fuzz #63802 (OP1 leak in error path of post inc/dec).


  • Added Curl options and constants up to (including) version 7.87.


  • Implement More Appropriate Date/Time Exceptions RFC.


  • Fix bug GH-8388 (DOMAttr unescapes character reference).
  • Fix bug GH-11308 (getElementsByTagName() is O(N^2)).
  • Fix #79700 (wrong use of libxml oldNs leads to performance problem).
  • Fix #77894 (DOMNode::C14N() very slow on generated DOMDocuments even after normalisation).
  • Revert changes to DOMAttr::$value and DOMAttr::$nodeValue expansion.
  • Fixed bug GH-11500 (Namespace reuse in createElementNS() generates wrong output).
  • Implemented DOMDocument::adoptNode(). Previously this always threw a "not yet implemented" exception.
  • Fixed bug GH-9628 (Implicitly removing nodes from \DOMDocument breaks existing references).
  • Added DOMNode::contains() and DOMNameSpaceNode::contains().
  • Added DOMElement::getAttributeNames().
  • Added DOMNode::getRootNode().
  • Added DOMElement::className and DOMElement::id.
  • Added DOMParentNode::replaceChildren().
  • Added DOMNode::isConnected and DOMNameSpaceNode::isConnected.
  • Added DOMNode::parentElement and DOMNameSpaceNode::parentElement.
  • Added DOMNode::isEqualNode().
  • Added DOMElement::insertAdjacentElement() and DOMElement::insertAdjacentText().
  • Added DOMElement::toggleAttribute().
  • Fixed bug GH-11792 (LIBXML_NOXMLDECL is not implemented or broken).
  • adoptNode now respects the strict error checking property.
  • Align DOMChildNode parent checks with spec.
  • Fixed bug #80927 (Removing documentElement after creating attribute node: possible use-after-free).
  • Fix various namespace prefix conflict resolution bugs.
  • Fix calling createAttributeNS() without prefix causing the default namespace of the element to change.
  • Fixed GH-11952 (Confusing warning when blocking entity loading via libxml_set_external_entity_loader).
  • Fix broken cache invalidation with deallocated and reallocated document node.
  • Fix compile error when php_libxml.h header is included in C++.
  • Fixed bug #47531 (No way of removing redundant xmlns: declarations).


  • Removed unneeded codepaths in exif_process_TIFF_in_JPEG().


  • Implement GH-11934 (Allow to pass CData into struct and/or union fields).


  • Upgrade bundled libmagic to 5.43.
  • Fix GH-11408 (Unable to build PHP 8.3.0 alpha 1 / fileinfo extension).


  • The status.listen shared pool now uses the same php_values (including expose_php) and php_admin_value as the pool it is shared with.
  • Added warning to log when fpm socket was not registered on the expected path.
  • Fixed bug #76067 (system() function call leaks php-fpm listening sockets).
  • Fixed GH-12077 (PHP 8.3.0RC1 borked socket-close-on-exec.phpt).


  • Removed imagerotate "ignore_transparent" argument since it has no effect.


  • Added pattern format error infos for numfmt_set_pattern.
  • Added MIXED_NUMBERS and HIDDEN_OVERLAY constants for the Spoofchecker's class.
  • Updated datefmt_set_timezone/IntlDateformatter::setTimezone returns type.
  • Updated IntlBreakInterator::setText return type.
  • Updated IntlChar::enumCharNames return type.
  • Removed the BC break on IntlDateFormatter::construct which threw an exception with an invalid locale.


  • Added json_validate().


  • Deprecate calling ldap_connect() with separate hostname and port.


  • Fix compile error with -Werror=incompatible-function-pointer-types and old libxml2.


  • mb_detect_encoding is better able to identify the correct encoding for Turkish text.
  • mb_detect_encoding's "non-strict" mode now behaves as described in the documentation. Previously, it would return false if the same byte (for example, the first byte) of the input string was invalid in all candidate encodings. More generally, it would eliminate candidate encodings from consideration when an invalid byte was seen, and if the same input byte eliminated all remaining encodings still under consideration, it would return false. On the other hand, if all candidate encodings but one were eliminated from consideration, it would return the last remaining one without regard for how many encoding errors might be encountered later in the string. This is different from the behavior described in the documentation, which says: "If strict is set to false, the closest matching encoding will be returned."
  • mb_strtolower, mb_strtotitle, and mb_convert_case implement conditional casing rules for the Greek letter sigma. For mb_convert_case, conditional casing only applies to MB_CASE_LOWER and MB_CASE_TITLE modes, not to MB_CASE_LOWER_SIMPLE and MB_CASE_TITLE_SIMPLE.
  • mb_detect_encoding is better able to identify UTF-8 and UTF-16 strings with a byte-order mark.
  • mb_decode_mimeheader interprets underscores in QPrint-encoded MIME encoded words as required by RFC 2047; they are converted to spaces. Underscores must be encoded as "=5F" in such MIME encoded words.
  • mb_encode_mimeheader no longer drops NUL (zero) bytes when QPrint-encoding the input string. This previously caused strings in certain text encodings, especially UTF-16 and UTF-32, to be corrupted by mb_encode_mimeheader.
  • Implement mb_str_pad() RFC.
  • Fixed bug GH-11514 (PHP 8.3 build fails with --enable-mbstring enabled).
  • Fix use-after-free of mb_list_encodings() return value.
  • Fixed bug GH-11992 (utf_encodings.phpt fails on Windows 32-bit).


  • mysqli_fetch_object raises a ValueError instead of an Exception.


  • Added start, restart and force restart time to opcache's phpinfo section.
  • Fix GH-9139: Allow FFI in opcache.preload when opcache.preload_user=root.
  • Made opcache.preload_user always optional in the cli and phpdbg SAPIs.
  • Allows W/X bits on page creation on FreeBSD despite system settings.
  • Added memfd api usage, on Linux, for zend_shared_alloc_create_lock() to create an abstract anonymous file for the opcache's lock.
  • Avoid resetting JIT counter handlers from multiple processes/threads.
  • Fixed COPY_TMP type inference for references.


  • Added OPENSSL_CMS_OLDMIMETYPE and PKCS7_NOOLDMIMETYPE contants to switch between mime content types.
  • Fixed GH-11054: Reset OpenSSL errors when using a PEM public key.
  • Added support for additional EC parameters in openssl_pkey_new.


  • SA_ONSTACK is now set for pcntl_signal.
  • Added SIGINFO constant.


  • Update bundled libpcre2 to 10.42.


  • pg_fetch_object raises a ValueError instead of an Exception.
  • pg_cancel use thread safe PQcancel api instead.
  • pg_set_error_verbosity adding PGSQL_ERRORS_STATE constant.
  • pg_convert/pg_insert E_WARNING on type errors had been converted to ValueError/TypeError exceptions.
  • Added pg_set_error_context_visibility to set the context's visibility within the error messages.


  • Fix memory leak in phar_rename_archive().


  • Added posix_sysconf.
  • Added posix_pathconf.
  • Added posix_fpathconf.
  • Fixed zend_parse_arg_long's bool pointer argument assignment.
  • Added posix_eaccess.


  • Added Randomizer::getBytesFromString().
  • Added Randomizer::nextFloat(), ::getFloat(), and IntervalBoundary.
  • Enable getrandom() for NetBSD (from 10.x).
  • Deprecate MT_RAND_PHP.
  • Fix Randomizer::getFloat() returning incorrect results under certain circumstances.


  • Fix GH-9470 (ReflectionMethod constructor should not find private parent method).
  • Fix GH-10259 (ReflectionClass::getStaticProperties doesn't need null return type).


  • Fixed GH-11141 (Could not open input file: should be sent to stderr).


  • Fixed bug GH-11529 (Crash after dealing with an Apache request).


  • Fixed bug GH-12192 (SimpleXML infinite loop when getName() is called within foreach).
  • Fixed bug GH-12208 (SimpleXML infinite loop when a cast is used inside a foreach).
  • Fixed bug #55098 (SimpleXML iteration produces infinite loop).


  • Added SO_ATTACH_REUSEPORT_CBPF socket option, to give tighter control over socket binding for a cpu core.
  • Added SKF_AD_QUEUE for cbpf filters.
  • Added socket_atmark if send/recv needs using MSG_OOB.
  • Added TCP_QUICKACK constant, to give tigher control over ACK delays.
  • Added DONTFRAGMENT support for path MTU discovery purpose.
  • Added AF_DIVERT for raw socket for divert ports.
  • Added SOL_UPDLITE, UDPLITE_RECV_CSCOV and UDPLITE_SEND_CSCOV for updlite protocol support.
  • Added SO_RERROR, SO_ZEROIZE and SO_SPLICE netbsd and openbsd constants.
  • Added TCP_REPAIR for quietly close a connection.
  • Added SO_REUSEPORT_LB freebsd constant.


  • Fixed GH-11573 (RecursiveDirectoryIterator::hasChildren is slow).


  • E_NOTICEs emitted by unserialize() have been promoted to E_WARNING.
  • unserialize() now emits a new E_WARNING if the input contains unconsumed bytes.
  • Make array_pad's $length warning less confusing.
  • E_WARNING emitted by strtok in the caase both arguments are not provided when starting tokenisation.
  • password_hash() will now chain the original RandomException to the ValueError on salt generation failure.
  • Fix GH-10239 (proc_close after proc_get_status always returns -1).
  • Improve the warning message for unpack() in case not enough values were provided.
  • Fix GH-11010 (parse_ini_string() now preserves formatting of unquoted strings starting with numbers when the INI_SCANNER_TYPED flag is specified).
  • Fix GH-10742 (http_response_code emits no error when headers were already sent).
  • Added support for rounding negative places in number_format().
  • Prevent precision loss on formatting decimal integers in number_format().
  • Added usage of posix_spawn for proc_open when supported by OS.
  • Added $before_needle argument to strrchr().
  • Fixed GH-11982 (str_getcsv returns null byte for unterminated enclosure).
  • Fixed str_decrement() on "1".


  • Fixed bug #51056: blocking fread() will block even if data is available.
  • Added storing of the original path used to open xport stream.
  • Implement GH-8641 (STREAM_NOTIFY_COMPLETED over HTTP never emitted).
  • Fix bug GH-10406 (fgets on a redis socket connection fails on PHP 8.3).
  • Implemented GH-11242 (_php_stream_copy_to_mem: Allow specifying a maximum length without allocating a buffer of that size).
  • Fixed bug #52335 (fseek() on memory stream behavior different than file).
  • Fixed bug #76857 (Can read "non-existant" files).


  • Fixed bug #69168 (DomNode::getNodePath() returns invalid path).


  • zip extension version 1.22.0 for libzip 1.10.0.
  • add new error macros (ER_DATA_LENGTH and ER_NOT_ALLOWED).
  • add new archive global flags (ERAFL*).
  • add ZipArchive::setArchiveFlag and ZipArchive::getArchiveFlag methods.
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