<?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"; ?> </programlisting> </example> <example> <title>静态方法示例</title> <programlisting role="php"> <![CDATA[ <?php class Foo { public static function aStaticMethod() { // ... } } Foo::aStaticMethod(); $classname = 'Foo'; $classname::aStaticMethod(); // 自 PHP 5.3.0 起 ?>
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