Symfony2 deployment by Github webhook which provides logging in file and integration with slack.

deploy.php

<?php
    // main deployment commands registration
    $commands = [
        'git pull',
        'git status',
        'rm -rf app/cache/*',
        'export SYMFONY_ENV=prod; export HOME=~; php composer.phar install',
        'php app/console doctrine:migration:migrate -n',
    ];

    if (!isset($_POST['payload'])) {
        exit('Request should contain "payload" offset in the POST');
    }

    $payload       = json_decode($_POST['payload'], true);
    $supportBranch = 'refs/heads/master';

    if (!isset($payload['ref']) || $payload['ref'] != $supportBranch) {
        exit(sprintf('Supports only changes in the "%s"', $supportBranch));
    }

    // register log file
    $output  = [];
    $logDir  = '../app/logs/deployment';
    $logName = sprintf('%s.log', date('Y-m-d'));

    if (!is_dir($logDir)) {
        $commands = array_merge(['mkdir app/logs/deployment'], $commands);
    } else {
        $logStr  = sprintf('START (%s)', date('H:i:s')) . PHP_EOL;
        $logStr .= str_repeat('=', 50) . PHP_EOL . PHP_EOL;

        file_put_contents($logDir . '/' . $logName, $logStr, FILE_APPEND);
    }

    // main commands call
    foreach ($commands as $command) {
        $result = shell_exec('cd .. ;' . $command . ' 2>&1');
        $header = sprintf('%s (%s)', $command, date('H:i:s'));

        $logStr  = $header . PHP_EOL;
        $logStr .= str_repeat('-', 50) . PHP_EOL;
        $logStr .= $result . PHP_EOL;

        file_put_contents($logDir . '/' . $logName, $logStr, FILE_APPEND);

        $result = preg_replace('/[[:cntrl:]]+/', PHP_EOL, $result);

        $output[$header] = nl2br($result);
    }

    // slack WEB Hook
    $link        = sprintf('%s://%s', isset($_SERVER['HTTPS']) ? 'https' : 'http', $_SERVER['HTTP_HOST']);
    $channel     = '#general';
    $mainMessage = sprintf('Hey! Deployment has been done. Visit <%s> for checking', $link);
    $attachments = [];

    if (isset($payload['head_commit'])) {
        $attachments[] = [
            'color'       => '#9304FF',
            'author_name' => 'Send by: ' . $payload['sender']['login'],
            'author_link' => $payload['sender']['html_url'],
            'author_icon' => $payload['sender']['avatar_url'],
            'title'       => 'Compare changes',
            'title_link'  => $payload['compare'],
            'mrkdwn_in'   => ['text'],
            'footer'      => sprintf('Has been pushed %s commits', count($payload['commits'])),
            'text'        => sprintf(
                '<%s|Head commit> message: ```%s```',
                $payload['head_commit']['url'],
                $payload['head_commit']['message']
            ),
            'fields'      => [
                [
                    'title' => 'Head commit author:',
                    'short' => true,
                    'value' => sprintf(
                        '%s (%s)',
                        $payload['head_commit']['author']['username'],
                        $payload['head_commit']['author']['name']
                    ),
                ],
                [
                    'title' => 'Head commit committer:',
                    'short' => true,
                    'value' => sprintf(
                        '%s (%s)',
                        $payload['head_commit']['committer']['username'],
                        $payload['head_commit']['committer']['name']
                    ),
                ],
                [
                    'title' => 'Pusher:',
                    'short' => true,
                    'value' => $payload['pusher']['name'],
                ],
            ],
        ];
    }

    $data = 'payload=' . json_encode([
        'channel'     => $channel,
        'text'        => $mainMessage,
        'icon_emoji'  => ':rocket:',
        'attachments' => $attachments,
    ]);

    $ch = curl_init('https://hooks.slack.com/services/.../.../...');

    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    $result = curl_exec($ch);

    curl_close($ch);

    $header = sprintf('slack (%s)', date('H:i:s'));

    $output[$header] = $result;

    $logStr  = $header . PHP_EOL;
    $logStr .= str_repeat('-', 50) . PHP_EOL;
    $logStr .= $result . PHP_EOL;

    file_put_contents($logDir . '/' . $logName, $logStr, FILE_APPEND);

    // delimiter for the next deployment call
    file_put_contents($logDir . '/' . $logName, str_repeat(PHP_EOL, 3), FILE_APPEND);
?>

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
        <meta name="robots" content="noindex,nofollow" />
        <title>Deployment result</title>
        <style>
            html {
                background: #eee;
            }
            body {
                font: 11px Verdana, Arial, sans-serif;
                color: #333;
                font-size: 14px;
                font-family: "Lucida Sans Unicode", "Lucida Grande", Verdana, Arial, Helvetica, sans-serif;
            }
            #content {
                width: 970px;
                margin: 0 auto;
            }
            .sf-reset h1 {
                font-family: Georgia, "Times New Roman", Times, serif;
                font-size: 20px;
                color: #313131;
                word-wrap: break-word;
            }
            .sf-reset p {
                font-size: 14px;
                line-height: 20px;
                padding-bottom: 20px;
            }
            .sf-reset .block {
                -moz-border-radius: 16px;
                -webkit-border-radius: 16px;
                border-radius: 16px;
                margin-bottom: 20px;
                background-color: #FFFFFF;
                border: 1px solid #dfdfdf;
                padding: 40px 50px;
                word-break: break-all;
            }
            .sf-reset h1.title {
                font-size: 45px;
                padding-bottom: 30px;
            }
            .sf-reset ul li {
                list-style-type: none;
            }
        </style>
    </head>
    <body>
        <div id="content">
            <div class="sf-reset">
                <div class="block">
                    <div class="symfony-block-content">
                        <h1 class="title">Deployment result</h1>
                        <ul>
                            <?php foreach ($output as $commandName => $result) :?>
                                <li>
                                    <b style="color: #6BE234;">$</b>
                                    <b style="color: #729FCF;"><?php echo $commandName ?></b>
                                    <p style="border-bottom: solid darkgrey 1px;padding-left: 40px">
                                        <?php echo $result ?>
                                    </p>
                                </li>
                            <?php endforeach; ?>
                        </ul>
                    </div>
                </div>
            </div>
        </div>
    </body>
</html>