gistfile1.php

<?php
$json = file_get_contents('php://input');

$data = json_decode($json, true);

$branch = $data['ref'];

$repo = isset($_GET['repo']) ? $_GET['repo'] : '';

$fs = fopen('commit_logs/' . $repo . '-commit.' . date('ymdhis') . '.log', 'a');

fwrite($fs, $branch . '/' . $repo . PHP_EOL);

fwrite($fs, print_r($data, true) . PHP_EOL);

if ($branch === 'refs/heads/master') {
    $exec = sprintf("sh /home/Project/deploy/master_deploy.sh %s 2>&1", $repo);
    exec($exec);
}

$fs and fclose($fs);