if ($textBlock != '') {
            $patterns = array ('/*/', '/?/', '/-/', '/\'/', '/\"/', '/@/', '/!/', '/%/', '/&/','/\(/', '/\)/', '/+/');
            $textBlock = preg_replace($patterns, '', $textBlock);
        }
        return $textBlock;

}

--- Error ---
FATAL ::() Compilation failed: nothing to repeat at offset 0