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Python in PHP

Copyright © 2002-2012 Jon Parise


This code is released under the terms of the MIT License.


The Python extension has the following system requirements:

  • PHP version 5.2.0 or later
  • PEAR installer version 1.4.3 or later


The easiest way to install the Perforce extension is by using the PECL installer::

pecl install python

If you're building from source code, should use the --with-python configuration option. If your copy of the Python hasn't been installed in one of the default locations, you can specify it as a parameter::


More detailed information on installing PECL packages in general can be found in the Installation of PECL Extensions section of the PHP Manual.

Source Code

This package's source code is hosted on GitHub:

A number of unit tests are included to help maintain correct and expected behavior. The tests can be run using PECL tool's run-tests command:

pecl run-tests -p python

Additional unit test contributions are welcome, especially when they increase code coverage or exercise specific use cases.


INI Settings


The python.optimize INI setting controls the Python interpreter's runtime optimization level. This is a global, system-wide setting and therefore can only be set in the PHP.ini file.

When set to 0 (the default), no additional optimizations are enabled, and the built-in __debug__ flag is True.

When set to 1 (equivalent to Python's -O command line option), the Python interpreter will generate optimized bytecode, and the built-in __debug__ flag is set to False.

When set to 2 (equivalent to Python's -OO command line option), the Python doc-strings will be removed in addition to the above optimizations.

Development and Support

Reporting Problems and Suggestions

If you run into a problem or would like to make a suggestion, please use the issue tracker. Feel free to contact me directly for other issues, but please try to use the bug tracker whenever possible so that others in the community will benefit from your feedback and my responses.