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145.33 ms | 1399 KiB | 7 Q<?php
$a = 1;
(unset) $a;
var_dump($a);
$x = new StdClass;
$x->stuff = 'foo';
var_dump(property_exists($x, "stuff"));
var_dump($x->stuff);
(unset)$x->stuff;
var_dump(property_exists($x, "stuff"));
var_dump($x->stuff);