List all PHP variables

Question

Is it possible to dump all global variables in a PHP script? Say this is my code:

<?php $foo = 1; $bar = "2"; include("blah.php"); dumpall(); // displays $foo, $bar and all variables created by blah.php 

Also, is it possible to dump all defined constants in a PHP script.

Answer 1

Use get_defined_vars and/or get_defined_constants

$arr = get_defined_vars(); print_r($arr);