<?php class MyStuff extends ArrayObject { function offsetGet($offset) { echo "Called"; return parent::offsetGet($offset); } } $array = array('foo' => 42); $array_object = new MyStuff($array); var_dump(isset($array['foo'])); //true var_dump(empty($array['foo'])); //false var_dump(isset($array_object['foo'])); //should be true (offsetGet not called) var_dump(empty($array_object['foo'])); //should be false (offsetGet called)
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