- var_dump: documentation ( source)
- array_values: documentation ( source)
- array_keys: documentation ( source)
<?php
$indexArray = ['a', 'b', 'c'];
$assocArray = ["0" => 'a', "1" => "b", "2" => 'c'];
var_dump(array_values($indexArray));
var_dump(array_values($assocArray));
var_dump(array_keys($assocArray, null, true));
if ($assocArray === array_values($assocArray)) {
echo "it works";
}