How to create classes and objects in PHP?

To create a class and object, you can follow these steps:

1. Create a class:

class MyClass {
    // 类的属性
    public $myProperty;

    // 类的方法
    public function myMethod() {
        // 方法体
    }
}

1. Create an object.

$obj = new MyClass();

1. Accessing the properties and methods of an object:

// 访问属性
$obj->myProperty = "Hello";
echo $obj->myProperty;

// 调用方法
$obj->myMethod();

Note: In PHP, class names are case-sensitive, so it is important to maintain consistency in capitalization when creating classes and instantiating objects. Additionally, properties and methods can use different access modifiers (public, protected, private) to control their accessibility.