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<?php $str = '0000-0024-0055-'; $str = rtrim($str,'-'); $codes = explode('-',$str); var_dump($codes); $maxCode = (int)array_pop($codes); var_dump($maxCode);
Output for git.master_jit, git.master, rfc.property-hooks
array(3) { [0]=> string(4) "0000" [1]=> string(4) "0024" [2]=> string(4) "0055" } int(55)

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