symfony/src/Symfony/Bundle/DebugBundle

dump() function

This bundle provides a better dump() function, that you can use instead of var_dump(), better meaning:

• per object and resource types specialized view: e.g. filter out Doctrine noise while dumping a single proxy entity, or get more insight on opened files with stream_get_meta_data(). Add your own dedicated Dumper\Caster and get the view you need.
• configurable output format: HTML, command line with colors or a dedicated high accuracy JSON format.
• ability to dump internal references, either soft ones (objects or resources) or hard ones (=& on arrays or objects properties). Repeated occurrences of the same object/array/resource won't appear again and again anymore. Moreover, you'll be able to inspect the reference structure of your data.
• ability to operate in the context of an output buffering handler.
• full exposure of the internal mechanisms used for walking through an arbitrary PHP data structure.

Calling dump($myVvar) works in all PHP code and {% dump myVar %} or {{ dump(myVar) }} in Twig templates.