3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isIndexNormalized($array){ $recreate = []; foreach($array as $index => $value){ $recreate[$index] = $value; } $recreate[] = "foo"; $array[] = "foo"; return $recreate === $array; } // ------- $array = [0, 1, 2, 3]; unset($array[3]); var_dump(isIndexNormalized($array)); $array[] = "x"; var_dump([0, 1, 2, "x"] === $array, $array); echo "\n\n\n\n"; // ------- $array = [0, 1, 2]; var_dump(isIndexNormalized($array)); $array[] = "x"; var_dump([0, 1, 2, "x"] === $array, $array);
Output for 5.6.38, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
bool(false) bool(false) array(4) { [0]=> int(0) [1]=> int(1) [2]=> int(2) [4]=> string(1) "x" } bool(true) bool(true) array(4) { [0]=> int(0) [1]=> int(1) [2]=> int(2) [3]=> string(1) "x" }
preferences:
121.39 ms | 408 KiB | 5 Q