Replace broken magic number with constant

PHP's parser token constants are dynamically generated,
values can change from version to version.
See: https://www.php.net/manual/en/tokens.php

scripts/generate_rules.php

@@ -41,7 +41,7 @@ function help($name) {
 	}
 
 	foreach(token_get_all($file_content) as $token) {
-		if ($token[0] != 319) {
+		if ($token[0] !== T_STRING) {
 			continue;
 		}