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PIE Usage for Extension Maintainers

Installing PIE

Manual installation

  • Download pie.phar from the latest releases
  • Validate the signature in pie.phar.asc
  • You may then invoke PIE with php pie.phar <command>
  • Optionally, copy pie.phar into your $PATH, e.g. cp pie.phar /usr/local/bin/pie
    • If you copy PIE into your $PATH, you may then invoke PIE with pie <command>

This documentation assumes you have moved pie.phar into your $PATH, e.g. /usr/local/bin/pie on non-Windows systems.

One-liner

Note that this does not verify any signatures, and you assume the risks in running this, but this will put PIE into /usr/local/bin/pie on a non-Windows system:

sudo curl -L --output /usr/local/bin/pie https://github.com/php/pie/releases/latest/download/pie.phar && sudo chmod +x /usr/local/bin/pie

Prerequisities for PIE

Running PIE requires PHP 8.1 or newer. However, you may still use PIE to install an extension for an older version of PHP.

Downloading, Building, or Installing an extension

PIE has the ability to:

  • only download an extension, with pie download ...,
  • download and build an extension, with pie build ...,
  • or, most commonly, download, build, and install an extension, with pie install ...

When installing an extension with PIE, you must use its Composer package name. You can find a list of PIE-compatible packages on https://packagist.org/extensions.

Once you know the extension name, you can install it with:

pie install <vendor>/<package>

# for example:
pie install xdebug/xdebug

This will install the Xdebug extension into the version of PHP that is used to invoke PIE, using whichever is the latest stable version of Xdebug compatible with that version of PHP.

Using PIE to install an extension for a different PHP version

If you are trying to install an extension for a different version of PHP, you may specify this on non-Windows systems with the --with-php-config option:

pie install --with-php-config=/usr/bin/php-config7.2 my/extension

On Windows, you may provide a path to the php executable itself using the --with-php-path option. This is an example on Windows where PHP 8.1 is used to run PIE, but we want to download the extension for PHP 8.3:

> C:\php-8.3.6\php.exe C:\pie.phar install --with-php-path=C:\php-8.1.7\php.exe example/example-pie-extension

Version constraints and stability

You may optionally specify a version constraint when using PIE to install an extension:

pie install <vendor>/<package>:<version-constraint>

If version-constraint is given, try to install that version if it matches the allowed versions. Version constraints are resolved using the same format as Composer, along with the minimum stability.

  • ^1.0 will install the latest stable and backwards-compatible version with 1.0.0 and above, according to semantic versioning. See Composer docs for details.
  • ^2.3@beta will install the latest beta and backwards-compatible version with 2.3.0 and above (for example, 2.3.0-beta.3).
  • dev-main will install the latest commit on the main branch at the time of command execution. This would not work with Windows, as there is no release with Windows binaries.
  • dev-main#07f454ad797c30651be8356466685b15331f72ff will install the specific commit denoted by the commit sha after #, in this case the commit 07f454ad797c30651be8356466685b15331f72ff would be installed. This would not work with Windows, as there is no release with Windows binaries.

If no version-constraint is given, try to install any compatible latest and stable version. PIE will always prefer stable versions.

Specifying configure options

When compiling extensions, some will need additional parameters passed to the ./configure command. These would typically be to enable or disable certain functionality, or to provide paths to libraries not automatically detected.

In order to determine what configure options are available for an extension, you may use pie info <vendor>/<package> which will return a list, such as:

Configure options:
    --enable-some-functionality  (whether to enable some additional functionality provided)
    --with-some-library-name=?  (Path for some-library)

The above example extension could then be installed with none, some, or all of the specified configure options, some examples:

pie install example/some-extension
pie install example/some-extension --enable-some-functionality
pie install example/some-extension --with-some-library-name=/path/to/the/lib
pie install example/some-extension --with-some-library-name=/path/to/the/lib --enable-some-functionality

Configuring the INI file

At the moment, PIE does not configure the INI file, although this improvement is planned soon. In the meantime, you must enable the extension after installing by adding a line such as extension=foo to your php.ini.