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<?php $subject = " XYZ99 Some text XYZ99. XYZ13 Some text XYZ33 and some text XYZ13. XYZ45 "; var_dump( preg_match_all('/^XYZ\d{2}$/m', $subject, $matches), $matches );
Output for git.master, git.master_jit, rfc.property-hooks
int(3) array(1) { [0]=> array(3) { [0]=> string(5) "XYZ99" [1]=> string(5) "XYZ13" [2]=> string(5) "XYZ45" } }

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