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- <?php
- function testing($a,$b){
- if ($a < $b ){
- return -1;
- }
- elseif ($a > $b){
- return 1;
- }
- //else {
- //return 0;
- //}
- }
- $array = array(1,3,2,4,5);
- usort($array, "testing");
- var_dump($array);
- ?>
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