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@ 2014-05-28T15:42:29Z

<?php

class A
{
}

class B extends A
{
}

$x = 'B';
var_dump(  is_subclass_of( $x, 'A' ) );

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
is_subclass_of: documentation ( source)

preferences:dark modelive preview

37.28 ms | 402 KiB | 5 Q