Online PHP editor | refs for kuuSt

<?php function delta() { static $lastmem=0; return memory_get_peak_usage() - $lastmem; } $a=range(1, 500); foreach($a as $k=>$v) { } var_dump(memory_get_peak_usage()); foreach($a as $k=>$v) { echo $v; } echo "\n"; var_dump('foreach loop and echo delta: '.delta()); for($x=0;$x<sizeof($a);$x++) { $a[$x]++; } var_dump('for loop and increment delta:'.delta()); foreach($a as $k=>$v) { $a[$k]++; } var_dump('foreach loop and increment delta: '.delta());