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<html><body>function my_sort($a, $b) { if ($a == $b) return 0; return ($a < $b) ? -1 : 1;}$a = array(4, 2, 8, 6);usort($a,"my_sort");foreach($a as $key => $value) { echo "[" . $key . "] => " . $value; echo "<br>";} </body></html>
[0] => 2
[1] => 4
[2] => 6
[3] => 8
[1] => 4
[2] => 6
[3] => 8