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<?php $subject = "3rd from last"; preg_match('~(?P<index>([0-9]+))rd from (?P<position>(last|end|start|beginning)+)~', $subject, $matches); var_dump($matches);
Output for 4.3.3 - 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 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(7) { [0]=> string(13) "3rd from last" ["index"]=> string(1) "3" [1]=> string(1) "3" [2]=> string(1) "3" ["position"]=> string(4) "last" [3]=> string(4) "last" [4]=> string(4) "last" }
Output for 4.3.0 - 4.3.2
array(5) { [0]=> string(13) "3rd from last" [1]=> string(1) "3" [2]=> string(1) "3" [3]=> string(4) "last" [4]=> string(4) "last" }
preferences:
275.77 ms | 401 KiB | 453 Q