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<?php $string = <<<EOT 195/50R16 EOT; $matches = []; preg_match('~^\d+/\d+R(?P<return>\d+)~', $string, $matches); var_dump($matches);
Output for rfc.property-hooks, git.master, git.master_jit
array(3) { [0]=> string(9) "195/50R16" ["return"]=> string(2) "16" [1]=> string(2) "16" }

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