PHP函数如何实现方法重载？

<?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?&gt;

<?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-&gt;subtract(20, 5); // 输出: Binary operation: subtract(20, 5)?&gt;