Write your Git Hooks in PHP, organize them on a per-project base and automatically add them.
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README.md

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Git PHP Hooks

Write your git hooks in PHP, organize them on a per project base and attach them automatically.

Git Hooks

Hooks are little scripts you can place in $GIT_DIR/hooks directory to trigger action at certain points.

There're two types of git hooks:

  1. pre-push (runs client side)
  2. post-push (runs server side)

For more info on Git Hooks, please take a look at the official docs - they are quite good.

How to

It's really easy:

  1. Add a folder to your project/repository. The name doesn't matter, as you have to specify it when triggering GitPHPHooks. The name in the following example is 'project-hooks'. (Hint: Not having a name allows you to customize and organize it as you like. It also allows git cloneing into a project specific directory.)
  2. Open your .git/hooks directory and add a new Git hook file. For example: pre-commit (without file extension).
  3. Add a new PHP file to the newly created custom Git hooks folder (again, 'project-hooks' in the example) that performs the task you want.

That's it.

All your Git hooks (inside .git/hooks) will have the same contents - only the target folder ('project-hooks') name will (maybe) differ.

#!/usr/bin/env php
<?php

include 'vendor/wcm/git-php-hooks/GitHooksLoader.php';
new \GitHooksLoader( __FILE__, 'project-hooks' );

Explanation:

  • The first line is a hashbang to specify that we actually have a PHP file on the Command Line.
  • The 1st argument for \GitHooksLoader() is the name of the current file to make the current hook identifyable for GitPHPHooks.
  • The 2nd argument is the target location where your custom, pre-project Git PHP hook files for the current task are located.

Naming convention

There's a naming convention that you must follow to properly attach PHP files to Git hooks. Sorting files is also done by file name.

  1. If a Git hook name is found in the file name, it will get attached to this specific hook and executed automatically. Example: pre-commit_
  2. If one of your hooking PHP files has a number attached, it will get added with this priority. Example: _10 If it ain't got any int in the file name, it will get skipped. This is useful to temporarily disable files if you are testing the order or a new hook.
  3. The name in between the Git hook name and the priority is just an identifiyer for yourself. Example: PHPUnit

Examples (and ready-to-use tasks)

Before jumping on examples, I suggest that you simply take a look at the GitPHPHooks Library repo. You will find a PHPLint and a PHP Mess Detector task and some others (hint: I happily accept pull requests!).

A real world scenario (simplified version of the task that is available in the linked library)

We want to run PHPLint before we commit

Add a new file named pre-commit in your .git/hooks directory. Then add a new directory in the root folder of your project/repository, named i.e. project-hooks. In there, add a new PHP file named pre-commit_lint_10.php. This file will automatically get added to your pre-commit hook where you called the \GitHooksLoader() like shown above. It will get added with a priority of 10. Then just put the following contents in your new file:

#!/usr/bin/env php
<?php
$output = shell_exec( 'php -l' );
echo $output;
if ( $output === 1 )
	exit 1;

Of course, above code is a very poor example. For a more detailed one, please refer to the library linked above. The GitPHPHooks Library runs two real world examples. To use PHP Mess Detector and PHPLint, I can just suggest using the library as those are currently built in. Again: If you have a custom one and want to share, just send a Pull Request.

Grunt integration

It can easily be integrated with grunt via grunt-githooks, originally written by @rhumaric.

Setup your grunt-githooks task like this:

php : {
	options      : {
		hashbang    : '#!/usr/bin/env php',
		startMarker : '\n<?php',
		template    : './templates/git-php-hooks.tmpl.hb'
	},
	'pre-push'   : 'none'
}

Then just add your hooked tasks to your project and use the following template:

include 'vendor/wcm/git-php-hooks/GitHooksLoader.php';
new \GitHooksLoader( __FILE__, 'vendor/wcm/git-php-hooks-library/src' );

This example is assuming that you are using the GitPHPHooksLibrary. The template in this case would be located inside a templates directory in the root folder of your project and be named git-php-hooks.tmpl.hb. It's important to set the hooks names value to none as GitPHPHooks doesn't need a task name as it identifies tasks by the filename by itself.

Install

Add the repo to your stack. You can use Composer (w/o Satis as it's added to Packagist). Simply add

"wcm/git-php-hooks": "^1.0"

to your composer.json file. GitHub has a service hook added to this repo to auto-update whenever this repo is updated. The ^1.0 version number will bring you all patches without breaking anything.

To add the repository to the dev-part of the stack in composer.json, the following command can be typed in the prompt (assuming composer is in your PATH or aliased ).

composer require --dev --prefer-dist -- wcm/git-php-hooks

wcm/git-php-hooks suggests installing a library of pre made hooks and tasks, wcm/git-php-hooks-library . To add this with composer the following can be used:

composer require --dev --prefer-dist -- wcm/git-php-hooks-library