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<?php $s = "any text CA-2019-6-000000 any text"; if (preg_match('~\b([A-Z]{2})[-\s](20[0-9]{2}|2100)-(0?[1-9]|1[0-2])-(\d{6})(?!\d)~', $s, $m)) { print_r($m); }
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => CA-2019-6-000000 [1] => CA [2] => 2019 [3] => 6 [4] => 000000 )

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