--TEST-- Test array_sum() --INI-- precision=14 memory_limit=128M --FILE-- <?php $i = 0; while ($i++ < 1000) { $a[] = $i; $b[] = (string)$i; } $s1 = array_sum($a); $s2 = array_sum($b); var_dump($s1, $s2); $j = 0; while ($j++ < 100000) { $c[] = $j; $d[] = (string) $j; } $s3 = array_sum($c); $s4 = array_sum($d); var_dump($s3, $s4); ?> --EXPECTF-- int(500500) int(500500) %st(5000050000) %st(5000050000)