PHP 7.3.15: Downloads, Changelog, News

Release Information

PHP Version
PHP 7.3
Release Date
Release Type
Security Update
Release Status
EOL, Use PHP 7.3.33
Branch Status

PHP 7.3 reached EOL on , and all releases of this version no longer receive security or bug fixes. Using PHP 7.3.15 is not recommended. PHP 7.3.33 is the latest version in the series.


Source Code

Git Clone
Use Git to clone the 7.3.15 tag from the PHP Git repository.
git clone --depth 1 --branch php-7.3.15
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:7.3.15-cli-alpine

Debian-based: More compatible with other components, complete, and are widely used.
docker pull php:7.3.15-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:7.3.15-fpm-alpine

Debian-based ZTS Apache: Includes Apache web server integrating PHP as an Apache module.
docker pull php:7.3.15-apache

Debian-based NTS FPM: PHP-FPM, can be integrated with Nginx, Caddy, and other web servers over Fast CGI.
docker pull php:7.3.15-fpm



  • Fixed bug #71876 (Memory corruption htmlspecialchars(): charset `*' not supported).
  • Fixed bug #79146 (cscript can fail to run on some systems).
  • Fixed bug #78323 (Code 0 is returned on invalid options).
  • Fixed bug #76047 (Use-after-free when accessing already destructed backtrace arguments).


  • Fixed bug #79078 (Hypothetical use-after-free in curl_multi_add_handle()).


  • Fixed bug #79212 (NumberFormatter::format() may detect wrong type).


  • Fixed bug #79191 (Error in SoapClient ctor disables DOMDocument::save()).


  • Fixed bug #79154 (mb_convert_encoding() can modify $from_encoding).


  • Fixed bug #79084 (mysqlnd may fetch wrong column indexes with MYSQLI_BOTH).


  • Fixed bug #79145 (openssl memory leak).


  • Fixed bug #79082 (Files added to tar with Phar::buildFromIterator have all-access permissions). (CVE-2020-7063)
  • Fixed bug #79171 (heap-buffer-overflow in phar_extract_file). (CVE-2020-7061)
  • Fixed bug #76584 (PharFileInfo::decompress not working).


  • Fixed bug #79115 (ReflectionClass::isCloneable call reflected class __destruct).



  • Fixed bug #79151 (heap use after free caused by spl_dllist_it_helper_move_forward).


  • Fixed bug #78902 (Memory leak when using stream_filter_append).


  • Fixed bug #78090 (bug45161.phpt takes forever to finish).


  • Fixed bug #70078 (XSL callbacks with nodes as parameter leak memory).

Commit List

Christoph M. Becker

Deus Kane

Florian Smeets

  • Add CURLOPT CURLOPT_HTTP09_ALLOWED available since 7.64.0 in b836d9cdc1

Ivan Mikheykin


Léopold Jacquot

Nikita Popov

Remi Collet

Stanislav Malyshev

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