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<?php $text = 'My Name ## is #P_NAM3# and \r\n I am #P_AG2# years old'; $r = '#([^#]+)#'; //$r = '#(?P<name>.*?)#'; //$r = '#(\w*)#'; preg_match_all('/'.$r.'/', $text, $m); var_dump($m);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(2) { [0]=> array(2) { [0]=> string(6) "# is #" [1]=> string(17) "# and \r\n I am #" } [1]=> array(2) { [0]=> string(4) " is " [1]=> string(15) " and \r\n I am " } }

preferences:
253.23 ms | 406 KiB | 350 Q