没怎么用过这个新特性,其实也不算新啦,试试吧,现在静态类的继承很方便了
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<?php class A { protected static $def = '123456' ; public static function test() { echo get_class( new static ); } public static function test2() { echo static :: $def ; } } class B extends A { protected static $def = '456789' ; } class C extends A { protected static $def = 'abcdef' ; } echo B::test(); echo '<br>' ; echo C::test(); echo '<br>' ; echo B::test2(); echo '<br>' ; echo C::test2(); echo '<br>' ; echo A::test(); echo '<br>' ; echo A::test2(); echo '<br>' ; |
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// 输出结果 B C 456789 abcdef A 123456 |