inst.sh

~/symfony/ $ # Ensure COMPOSER_HOME='~/.composer/'
~/symfony/ $ composer global require psy/psysh
~/symfony/ $ # Obtain sysh script
~/symfony/ $ chmod +x sysh
~/symfony/ $ mkdir -p ~/.composer/bin/
~/symfony/ $ mv sysh ~/.composer/bin/
~/symfony/ $ # Add ~/.composer/bin to path if necessary
~/symfony/ $ sysh

Psy Shell v0.7.2 (PHP 5.6.20-1+deb.sury.org~precise+1 — cli) by Justin Hileman
>>> ls
Variables: $container, $doctrine, $em, $kernel
>>> $container->get('mailer')
=> Swift_Mailer {#156}

sysh

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

$root = getcwd();

require_once $root . '/app/bootstrap.php.cache';
require_once $root . '/app/AppKernel.php';
require_once __DIR__ . '/../vendor/autoload.php';

use Psy\Shell;

$kernel = new AppKernel('dev', true);
$kernel->loadClassCache();
$kernel->boot();

$container = $kernel->getContainer();
$container->get('cache_clearer')->clear($kernel->getCacheDir());

$doctrine = $container->get('doctrine');
$em = $doctrine->getManager();

extract(Shell::debug([
    'kernel' => $kernel,
    'container' => $container,
    'doctrine' => $doctrine,
    'em' => $em
]));