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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | <?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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