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<?php $pattern = "/^(?<animal>DOG|CAT)?(?<color>BLUE|RED)?$/i"; $str = "DOG"; if (preg_match($pattern, $str, $matches)) { $matches = array_merge(array('animal' => '', 'color' => ''), $matches); $matches = array_filter($matches, 'is_string', ARRAY_FILTER_USE_KEY); print_r($matches); }
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [animal] => DOG [color] => )

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