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<?php $a = array("3406-INGL1ING","3407-INGL1ING"); echo strcmp($a[0], $a[1]); natsort($a); print_r($a);
Output for git.master, git.master_jit, rfc.property-hooks
-1Array ( [0] => 3406-INGL1ING [1] => 3407-INGL1ING )

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