Languages > PHP

PHP is a popular web scripting programming language. MAMP PRO installs several versions of the PHP script interpreter.


  • Default version
    Select which PHP version will be the default version. To view the php template file press the MAMP button. Additional versions of PHP can be downloaded by pressing the MAMP button. PHP versions can be deleted using the MAMP button. You can only delete PHP versions that are currently not in use by any hosts.


    More information on removing PHP versions can be found here.

Adding Additional PHP Versions

  • Make this version available on the command line
    Check this option to make the current PHP version available on the command line. MAMP PRO uses aliases to provide this functionality. When this option is checked the following is added to your ~/.profile file (PHP 7.1.1).
alias php='/Applications/MAMP/bin/php/php7.1.1/bin/php -c "/Library/Application Support/appsolute/MAMP PRO/conf/php7.1.1.ini"'
alias pear='/Applications/MAMP/bin/php/php7.1.1/bin/pear'
alias pecl='/Applications/MAMP/bin/php/php7.1.1/bin/pecl'

Confirm your PHP is enabled by typing “php -v” in your terminal.



More information on configuring your command line PHP can be found here.

  • Mode
    Choose whether to use identical PHP versions for all hosts (module mode) or on a host by host basis (CGI mode).

    • Identical PHP versions for all hosts (module mode)
      In module mode all hosts use the same PHP version.
    • Individual PHP version for every host (CGI mode)
      In CGI Mode the PHP settings will be identical for all hosts – except for the PHP version. Navigate to the Hosts section to change the PHP version for each individual host. More information on how to change the PHP version for an individual host is covered in the Settings > Hosts > General section.

  • Cache module to speed up PHP execution
    PHP has several cache extensions that can help speed up execution in certain circumstances. This is set to “off” by default. Enabling a cache extension does not necessarily translate into greater execution speed. A particular cache is not available for the current PHP version if it is not enabled.

    • off
      No cache will be used.
    • APC
      The Alternative PHP Cache (APC) is a free and open opcode cache for PHP. You can learn more about APC here.
    • eAccelerator
      eAccelerator a free open-source PHP accelerator & optimizer. You can learn more about eaccelerator here.
    • XCache
      XCache is a open-source opcode cacher. You can learn more about xCache here.
    • OPCache
      OPcache improves PHP performance by storing precompiled script bytecode in shared memory, thereby removing the need for PHP to load and parse scripts on each request. You can learn more about OPcache here.


    Several caches provide a user interface to help analyze and profile your code. Press the MAMP button to the right of the cache name to view this interface. An interface is not available if the Arrow button is not enabled.

  • Extensions

    • Xdebug (Debugger)
      Activate Xdebug to allow PHP to create debugging information during script execution. By default, Xdebug uses localhost and port 9000 in the PHP.ini file. More information on using Xdebug with the MacGDBp Debugger can be founder here.

    • Imagick / ImageMagick
      Activate Imagick / ImageMagick.

    • Tidy
      Activate Tidy.

    • Oauth
      Activate Oauth.

    • Open MacGDBp
      With Xdebug activated you can open the MacGDBp debugger to enable PHP debugging. By default, MacGDBp expects debugging information on port 9000 of localhost. More information on using Xdebug with the MacGDBp Debugger can be founder here.

  • What to log
    Determine which error types should be reported.

    • Display startup errors
      Log PHP errors that occur when Apache loads the PHP module.

    • All other errors and warnings
      All errors will be reported.

    • Errors
      Script errors that make the further execution of the current PHP script impossible.

    • Warnings
      General errors in the PHP environment.

    • Notices
      Possible problems, that do not concern PHP, but which could be a notice of an error in a script.

    • Other
      Report further error types through constants. Please turn to the PHP documentation for further information.

  • Log Errors
    Determine if errors should be recorded in a log file and/or displayed in a web browser window.

More information on how to connect to MySQL using PHP (PHP <= 5.5.x) can be found in our How To section.

More information on how to connect to MySQL using PHP (PHP >= 5.6.x) can be found in our How To section.