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<?php $value = "1234 4569 "; var_dump(preg_match_all('/[0-9]{4}/', $value, $matches, PREG_SET_ORDER)); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
int(2) array(2) { [0]=> array(1) { [0]=> string(4) "1234" } [1]=> array(1) { [0]=> string(4) "4569" } }

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