This bundle provides an easy and extensible var_dump/print_r replacement for Symfony2 projects, both in controllers or Twig templates. For example, with this bundle, the following is possible:

<?php
    class UserController extends Controller
    {
        public function userAction($username) {
            ladybug_dump($username); // or just ld($username)
        }
    }

{{ user.username|ladybug_dump }}

Getting as a result:

string(10) "raulfraile"

To install this bundle, you'll need both the Ladybug library and this bundle. Installation depends on how your project is setup:

If you're using the bin/vendors.php method to manage your vendor libraries, add the following entries to the deps in the root of your project file:

[Ladybug]
    git=http://github.com/raulfraile/Ladybug.git
    target=ladybug

[RaulFraileLadybugBundle]
    git=http://github.com/raulfraile/LadybugBundle.git
    target=/bundles/RaulFraile/Bundle/LadybugBundle

Next, update your vendors by running:

$ ./bin/vendors

Skip down to Step 2.

If you're managing your vendor libraries with submodules, first create the vendor/bundles/RaulFraile/Bundle directory and next add the two submodules:

$ git submodule add git://github.com/raulfraile/Ladybug.git vendor/ladybug
$ git submodule add git://github.com/raulfraile/LadybugBundle.git vendor/bundles/RaulFraile/Bundle/LadybugBundle

Add the following entries to your autoloader:

<?php
// app/autoload.php

$loader->registerNamespaces(array(
    // ...

    'Ladybug'           => __DIR__.'/../vendor/ladybug/lib',
    'RaulFraile'        => __DIR__.'/../vendor/bundles',
));

Finally, enable the bundle in the kernel:

<?php
// app/AppKernel.php

public function registerBundles()
{
    $bundles = array(
        // ...

        new RaulFraile\Bundle\LadybugBundle\RaulFraileLadybugBundle(),
    );
}

It is possible to dump any variable, including arrays, objects and resources:

<?php
    $var = array(1, 2, 3);
    ladybug_dump($var)

<?php
    $var = new Foo();
    ladybug_dump($var)

<?php
    $img = imagecreatefrompng(__DIR__ . '/images/ladybug.png');
    ladybug_dump($img);

The same can be accomplished using the Twig filter ladybug_dump.

The are 5 helpers that can be used in any controller:

ladybug_dump($var1[, $var2[, ...]]): Dumps one or more variables

ladybug_dump_die($var1[, $var2[, ...]]): Dumps one or more variables and terminates the current script

ladybug_dump_return($format, $var1[, $var2[, ...]]): Dumps one or more variables and returns the dump in any of the following formats:

• yml: Returns the dump in YAML
• json: Returns the dump in JSON
• xml: Returns the dump in XML
• php: Returns the dump in PHP arrays

ladybug_dump_ini([$extension]): Dumps all configuration options

ladybug_dump_ext(): Dumps loaded extensions

There are also some shortcuts in case you are not using this function names:

ld($var1[, $var2[, ...]]): shortcut for ladybug_dump

ldd($var1[, $var2[, ...]]): shortcut for ladybug_dump_die

ldr($format, $var1[, $var2[, ...]]): shortcut for ladybug_return

Only ladybug_dump can be used inside Twig templates.

There are two Symfony commands to dump an instance of a given class or export it to a file, in JSON, YAML or XML format.

# php app/console ladybug:dump class_name [--all]
# php app/console ladybug:export class_name target [--format=yaml]

php app/console ladybug:dump "Symfony\Component\HttpFoundation\Request"
php app/console ladybug:export "Symfony\Component\HttpFoundation\Request" export.json --format=json

Instead of printing out the dump tree inside the HTML document, you can use the Ladybug logger and see the results in a tab of the Symfony profiler:

To make use of the Ladybug logger, grab the ladybug service from the DIC, and call the log method:

<?php
class TestController
{
    public function testAction()
    {
        $var = 1;
        $this->get('ladybug')->log($var);    
    }

Ladybug automatically detects Symfony, Doctrine, Twig and Silex classes, and link them to the official documentation.