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run code in 300+ PHP versions simultaneously
<?php $i=0; $tmp=''; while($i<10000) { $tmp.='a'; ++$i; } $test = array_fill(100000000000000000000000, 100, $tmp); for($a=0; $a<count($test); $a++){} ?>

preferences:
42.95 ms | 402 KiB | 5 Q