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<?php $str = "PDOConnectionFactoryDB7"; $upper = '[A-Z]'; $lower = '[a-z]'; $numeric = '[0-9]'; $regex = "(^{$upper}{$lower}+" /* <-- Connection and Factory */ . "|{$upper}+(?!{$upper})" /* <-- PDO and DB */ . "|{$numeric}+" /* <-- 7 */ .")$"; preg_match_all($regex, $str, $matches); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match_all(): Unknown modifier '$' in /in/b32RM on line 13 NULL

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