后期静态绑定
<?php
class A
{
public static $name = '陈学北';
public static $age = 85;
public static function showInfo()
{
echo static::$name, '<hr>';
echo static::$age, '岁.<hr>';
}
}
class F extends A
{
public static $name = '陈学东';
public static $age = 65;
}
class S extends F
{
public static $name = '陈学西';
public static $age = 45;
}
A::showInfo();
F::showInfo();
S::showInfo();