Simple git post-merge hook to check if your composer dependencies are in sync with the composer.lock file after merging a remote branch.

post-merge

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

/**
 * Simple git post-merge hook to check if your composer dependencies are in sync with the composer.lock file after merging a remote branch.
 *
 * Put this into a file called `post-merge` inside your `.git/hooks` directory and make it executable using `chmod +x .git/hooks/post-merge`.
 *
 * This script assumes you use the following Symfony components:
 * 
 * - Console
 * - Process
 */

require_once __DIR__ . '/../../vendor/autoload.php';

$output = new Symfony\Component\Console\Output\ConsoleOutput();
$output->writeln('Checking if your dependencies are in sync with <comment>composer.lock</comment>...');
$process = new Symfony\Component\Process\Process('./composer.phar install --dry-run --no-ansi', realpath(__DIR__ . '/../../'));
$process->run();

if (!$process->isSuccessful()) {
    $output->writeln('Unable to determine dependency status, run <info>./composer.phar install</info> manually.');
    exit();
}

if (strpos($process->getOutput(), 'Nothing to install or update') > 0) {
   $output->writeln('Your composer dependencies are up to date.');
} else {
   $output->writeln('Your composer dependencies are out of sync with the <comment>composer.lock</comment> file.');
   $output->writeln('Run <info>./composer.phar install</info> to install the current versions of the dependencies.');
}