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run code in 150+ php & hhvm versions
Bugs & Features
<?php $subject = "3 from last"; preg_match('~(?:(?P<index>[0-9]+)(st|nd|rd|th)+) from (?P<position>last|end|start|beginning)+~', $subject, $matches); var_dump($matches);
Output for 4.3.0 - 7.1.0
array(0) { }