Pro PHP- Patterns, Frameworks, Testing and More

CHAPTER 2 ■ STATIC VARIABLES, MEMBERS, AND METHODS^17

Listing 2-7. Invoking a Static Method

class MyObject {

static function myMethod() {

//Do something useful

}

}

MyObject::myMethod();

PHP 6 introduces a few new changes to the operation of static methods. First, you may no

longer use the :: operator to access methods that are not marked static. Correctly marking

your methods as static or non-static is now much more important than it was in previous

versions of PHP. Additionally, the static:: scope can also be applied to static methods. This

allows you to statically call a method of an inheriting class from within a parent class, as shown

in Listing 2-8.

Listing 2-8. The static Scope in PHP 6

class MyObject {

static function myMethod() {

static::myOtherMethod();

}

static function myOtherMethod() {

echo 'Called from MyObject';

}

}

class MyExtendedObject extends MyObject {

static function myOtherMethod() {

echo 'Called from MyExtendedObject';

}

}

MyExtendedObject::myMethod();

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