<?php class Example {

  public function __call($name, $arguments) {

    // 处理未定义的方法

    echo "Method $name not found with arguments: " . implode(', ', $arguments);

  }

}

$example = new Example();

$example->hello('John', 'Doe'); // 输出: Method hello not found with arguments: John, Doe

?>

<?php class Calculator {

  public function __call($name, $arguments) {

    // 根据参数数量执行不同操作

    switch (count($arguments)) {

      case 1:

        echo "Unary operation: $name(" . $arguments[0] . ")";

        break;

      case 2:

        echo "Binary operation: $name(" . $arguments[0] . ", " . $arguments[1] . ")";

        break;

      default:

        echo "Invalid operation: $name";

    }

  }

}

$calculator = new Calculator();

$calculator->add(10); // 输出: Unary operation: add(10)

$calculator->subtract(20, 5); // 输出: Binary operation: subtract(20, 5)

?>