Examples:
Static method example
<?php class Foo { public static function aStaticMethod() { // ... } } Foo::aStaticMethod(); $classname = 'Foo'; $classname::aStaticMethod(); // As of PHP 5.3.0 ?>
Static property example
Static properties cannot be accessed through the object using the arrow operator ->.
Like any other PHP static variable, static properties may only be initialized using a literal or constant before PHP 5.6; expressions are not allowed. In PHP 5.6 and later, the same rules apply as const expressions: some limited expressions are possible, provided they can be evaluated at compile time.
As of PHP 5.3.0, it's possible to reference the class using a variable. The variable's value cannot be a keyword (e.g. self, parent and static).
<?php class Foo { public static $my_static = 'foo'; public function staticValue() { return self::$my_static; } } class Bar extends Foo { public function fooStatic() { return parent::$my_static; } } print Foo::$my_static . "\n"; $foo = new Foo(); print $foo->staticValue() . "\n"; print $foo->my_static . "\n"; // Undefined "Property" my_static print $foo::$my_static . "\n"; $classname = 'Foo'; print $classname::$my_static . "\n"; // As of PHP 5.3.0 print Bar::$my_static . "\n"; $bar = new Bar(); print $bar->fooStatic() . "\n"; ?>
Please login to continue.