- var_dump: documentation ( source)
<?php
$foo = false;
var_dump($foo);
$foo["bar"] = "baz";
var_dump($foo);
echo("---\nSo changing a variable's type is perfectly fine, right?\n---\n");
$foo = new time();
var_dump($foo);
$foo["bar"] = "baz";
var_dump($foo);