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<?php preg_match('/^([a-z0-9_]+)((?:::)([a-z0-9_]+))+/g', 'lol::second::third::fourth', $matches); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match(): Unknown modifier 'g' in /in/rXE9f on line 4 NULL

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