class Person
{
public function walk()
{
echo "我是人类，我会走路
";
}
}
class Ye extends Person
{
public function say()
{
echo "我是爷爷，我会说话
";
}
}
class Father extends Ye
{
}
class Son extends Father
{
}
测试：
1 2 3 |
|
结果
class Person
{
public function walk()
{
echo "我是人类，我会走路
";
}
}
class Ye extends Person
{
public function say()
{
echo "我是爷爷，我会说话
";
}
}
class Father extends Ye
{
}
class Son extends Father
{
}
测试：
1 2 3 |
|
结果
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