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<?php $tag = "MU"; $strings = [ 'D109 MU, worked from home today', 'Walked the dog, later took the kids to swimming. D110 MU. Went to the gym in the evening for the 9th time this month.' ]; foreach ($strings as $string) { echo "\n---\n" , preg_match("~D\K\d+(?= $tag)~", $string, $out) ? $out[0] : 'fail'; }
Output for git.master, git.master_jit, rfc.property-hooks
--- 109 --- 110

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