PHP方法可以重载吗_PHP方法重载实现机制与替代方案说明

class Example {
    public function test($a) {
        echo "One parameter";
    }
    
    public function test($a, $b) { // 这会覆盖上面的方法
        echo "Two parameters";
    }
}

class DynamicMethod {
    public function __call($name, $arguments) {
        if ($name === 'sayHello') {
            if (count($arguments) === 1) {
                return "Hello " . $arguments[0];
            } elseif (count($arguments) === 2) {
                return "Hello " . $arguments[0] . ", I'm " . $arguments[1];
            }
        }
        throw new Exception("Method $name not supported");
    }
}

$obj = new DynamicMethod();
echo $obj->sayHello("Alice");           // 输出: Hello Alice
echo $obj->sayHello("Alice", "Bob");    // 输出: Hello Alice, I'm Bob

class Greeter {
    public function greet($name, $greeting = "Hello", $punctuation = "!") {
        return "$greeting $name$punctuation";
    }
}
// 调用方式多样
$g = new Greeter();
$g->greet("Tom");                    // Hello Tom!
$g->greet("Tom", "Hi");              // Hi Tom!
$g->greet("Tom", "Hey", ".");        // Hey Tom.