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@ 2014-03-01T09:56:30Z

<?php
interface Foo {}

class Bar implements Foo {}

class Foo2 extends Bar {}

var_dump(is_a('Bar', 'Foo'));

var_dump(is_a('Foo2', 'Foo'));
var_dump(is_a('Foo2', 'Bar'));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
is_a: documentation ( source)

preferences:dark modelive preview

36.23 ms | 402 KiB | 5 Q