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<?php $string = "namespace Concrete\Package\Derp\MenuItems\Derp;"; $results = array(); preg_match('~^namespace\s+Concrete\\Package\\[^\\]+\\(.+?)(?:\\.+)?;$~i', $string, $results); var_dump($results);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match(): Compilation failed: unknown property after \P or \p at offset 24 in /in/XAUeE on line 6 array(0) { }

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