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@ 2014-03-06T20:50:14Z

<?php
interface HumanInterface 
{
}

class Human implements HumanInterface
{
}


class Dog {
}

echo is_a('Dog', 'HumanInteface') ? 'true' : 'false';

Output
Performance
VLD
References
Branches

is_a: documentation ( source)

preferences:dark modelive preview

37.84 ms | 402 KiB | 5 Q