php t_static

In PHP, the static keyword is used to declare static properties and methods in a class.

Static properties are shared among all instances of a class and can be accessed without creating an object of the class. They are defined using the static keyword before the property name. For example:

class MyClass {
    public static $myStaticProperty = 'Hello';

    public static function myStaticMethod() {
        echo self::$myStaticProperty;
    }
}

echo MyClass::$myStaticProperty; // Output: Hello
MyClass::myStaticMethod(); // Output: Hello

Static methods are also shared among all instances of a class and can be called without creating an object of the class. They are defined using the static keyword before the method name. For example:

class MyClass {
    public static function myStaticMethod() {
        echo 'Hello';
    }
}

MyClass::myStaticMethod(); // Output: Hello

It's important to note that static properties and methods cannot access non-static properties and methods directly. They can only access other static properties and methods.