PHP 类与对象实战指南：构建可扩展和可维护的代码

class ClassName {
// 类属性
public $property1;
public $property2;

// 类方法
public function method1() {
// 方法代码
}

public function method2() {
// 方法代码
}
}

$object = new ClassName();

$object->property1;
$object->method1();

// 定义一个 Person 类
class Person {
public $name;
public $age;

public function greet() {
echo "Hello, my name is $this->name and I am $this->age years old.";
}
}

// 创建一个 Person 对象
$person = new Person();

// 设置对象属性
$person->name = "John Doe";
$person->age = 30;

// 调用对象方法
$person->greet();

Hello, my name is John Doe and I am 30 years old.