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- <?php
- function cmp($a, $b)
- {
- if ($a == $b) {
- return 0;
- }
- return ($a < $b) ? -1 : 1;
- }
- $a = array(3, 2, 5, 6, 1);
- usort($a, "cmp");
- foreach ($a as $key => $value) {
- echo "$key: $value\n";
- }
- ?>
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