![]() worker dynos using a php … command use this memory limit instead of the default PHP INI value of 128M. The memory_limit PHP INI directive for the php CLI executable defaults to the full available dyno memory for PHP versions 7.2 or later. opcache.validate_timestamps is set to 0.In addition, the PHP runtimes always have OPcache enabled for improved performance, with the following configuration changes optimized for the specific characteristics of Heroku’s dynos: session.sid_length is set to 32 (for PHP 7.1 and later).E_ALL & ~E_STRICT & ~E_DEPRECATED for PHP 8.1 or later.E_ALL & ~E_STRICT for PHP versions before 8.1.Notwithstanding the above, the following INI directives are set to Heroku-specific values: Runtime settingsĪll PHP runtimes use the respective release’s php.ini-production file as their base php.ini configuration. Rows marked up with red text and background indicate a PHP release series that is fully end-of-life and no longer receiving updates of any kind from the upstream maintainers and is no longer supported by Heroku. Rows marked up with yellow text and background indicate a PHP release series that is only receiving security updates from the upstream maintainers. Once a PHP release series has reached end-of-life, it will no longer be supported by Heroku, but its latest release will remain available for builds to allow customers to upgrade their applications to a newer PHP version. The support for PHP release series on the Heroku platform follows the PHP Group’s support policy, typically with active updates for two years after an initial x.y.0 version, followed by a year of security updates. Heroku’s PHP support extends to applications using the latest available releases in the PHP 7.4, PHP 8.0 and PHP 8.1 series. Heroku allows you to run your application using the official PHP runtime. Please refer to the “Manage Dependencies” section of the Deploying PHP guide for detailed instructions. This ensures that the dependencies Heroku installs are exactly the same as in any other environment. If composer.json specifies dependencies of any kind in its require section, the corresponding composer.lock that gets generated by running composer update must also be committed to the repository, or the push will be rejected. When Heroku recognizes a PHP application, it will respond accordingly during a push: $ git push heroku master Even if an application has no Composer dependencies, it must include at least an empty ( ) composer.json in order to be recognized as a PHP application. The Heroku PHP Support will be applied to applications only when the application has a file named composer.json in the root directory. This document describes the general behavior of Heroku as it relates to the recognition and execution of PHP applications. ![]()
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