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@ 2014-10-12T14:52:49Z

<?php

class MyClass
{

    public function __isset($varname)
    {
        echo 'isset' . PHP_EOL;
        return false;
    }

    public function __get($varname)
    {
        trigger_error('Key "' . $varname . '" does not exist', E_USER_NOTICE);
    }

}

$obj = new MyClass();
var_dump( isset($obj->test[0]) );

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
trigger_error: documentation ( source)

preferences:dark modelive preview

57.83 ms | 402 KiB | 5 Q