deploy.php

<?php

use Aws\Common\Aws;

const AWS_ACCESS_KEY      = '';
const AWS_SECRET_KEY      = '';
const AWS_REGION          = 'us-east-1';
const S3_BUCKET           = '';
const EB_APPLICATION_NAME = '';

ob_start();

// Composer autoloading
if (file_exists('vendor/autoload.php')) {
    $loader = include 'vendor/autoload.php';
}

$environments = [
    'master' => ['env1', 'env2']
];

$gitHash = exec('git log -1 --format="%H"');
$branch  = exec('git rev-parse --abbrev-ref HEAD');

exec('git log -1 --format="%B"', $commitMessage);
$commitMessage = reset($commitMessage);

if (!isset($environments[$branch])) {
    echo 'No environments are bound to the branch ' . $branch . PHP_EOL;
    die();
}

echo sprintf(
    "\nBranch '%s' is going to be deployed to following environments: %s. Do you want to confirm? [y/N]\n",
    $branch,
    implode(', ', $environments[$branch])
);

flush();
ob_flush();

if (trim(fgets(STDIN)) !== 'y') {
    die();
}

echo "\nCreating the archive... This may take some minutes!\n";

$archiveFileName = $gitHash . '.zip';

// Create the archive in the current branch
exec('vendor/bin/zfdeploy.php build ' . $archiveFileName . ' --composer=on --gitignore=on');

$aws = Aws::factory([
    'key'    => AWS_ACCESS_KEY,
    'secret' => AWS_SECRET_KEY,
    'region' => AWS_REGION
]);

/** @var \Aws\S3\S3Client $s3 */
$s3 = $aws->get('S3');
$s3->upload(S3_BUCKET, 'git-' . $gitHash . '.zip', file_get_contents($archiveFileName));

/** @var \Aws\ElasticBeanstalk\ElasticBeanstalkClient $elasticBeanstalkClient */
$elasticBeanstalkClient = $aws->get('ElasticBeanstalk');
$elasticBeanstalkClient->createApplicationVersion([
    'ApplicationName' => EB_APPLICATION_NAME,
    'Description'     => $commitMessage,
    'VersionLabel'    => substr('git-' . $gitHash, 0, 11),
    'SourceBundle'    => [
        'S3Bucket' => S3_BUCKET,
        'S3Key'    => 'git-' . $gitHash . '.zip'
    ]
]);

foreach ($environments[$branch] as $environment) {
    $elasticBeanstalkClient->updateEnvironment([
        'EnvironmentName' => $environment,
        'VersionLabel'    => substr('git-' . $gitHash, 0, 11)
    ]);
}

unlink($archiveFileName);