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run code in 300+ PHP versions simultaneously
<?php class It extends ArrayIterator { public function current() { printf("current\n"); return parent::current(); } } $i = new It(array(1, 2, 3, 4)); foreach($i as $k => $v) { printf("value: %d\n", $v); }

preferences:
39.28 ms | 402 KiB | 5 Q