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@ 2016-03-26T08:25:34Z

<?php

class A
{
    function __get($a){
        return new A;
    }
    
    function __isset($a){
        echo "exists";
        if($a === 'a'){
            return true;
        }else{
            return false;
        }
    }
}


$x = new A;

var_dump($x->a->b ?? 20);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

26.17 ms | 404 KiB | 5 Q