--TEST-- bcmul() requires well-formed values --EXTENSIONS-- bcmath --FILE-- getMessage() . PHP_EOL; } try { bcmul('1', 'a'); } catch (\ValueError $e) { echo $e->getMessage() . PHP_EOL; } ?> --EXPECT-- bcmul(): Argument #1 ($num1) is not well-formed bcmul(): Argument #2 ($num2) is not well-formed