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@ 2014-08-13T09:01:43Z

<?php
namespace Test;

class X extends \DateTime {
}

$a = new \DateTime();
$b = new X();

var_export(is_a($a, 'DateTime'));
var_export(is_a($b, 'DateTime'));

Output
Performance
VLD
References
Branches

is_a: documentation ( source)
var_export: documentation ( source)

preferences:dark modelive preview

50.09 ms | 402 KiB | 5 Q