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<?php $input = "12 XY 123456789"; if (preg_match('/^(?:(\d+)\s*)?(A|B|DF|XY)(?:\s*(\d+))?$/', $input, $matches)){ array_shift($matches); print_r($matches); }
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => 12 [1] => XY [2] => 123456789 )

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