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<?php $course_id = "SW_3200R50S14C"; $matches = array(); preg_match("[0-9]+",$course_id, $matches); print_r($matches);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match(): Unknown modifier '+' in /in/lPq3C on line 6 Array ( )

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