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@ 2014-09-03T19:47:24Z

<?php
class A { public $avar; public function __isset($varname) { return true; } }
class B extends A { 
	public function hasAVar(){ return property_exists($this, 'avar'); } 
	public function hasBVar(){ return property_exists($this, 'bvar'); } 
}

$b = new B(); 
var_dump($b->hasAVar());

Output
Performance
VLD
References
Branches

property_exists: documentation ( source)
var_dump: documentation ( source)

preferences:dark modelive preview

42.81 ms | 402 KiB | 5 Q