Heim > Artikel > Backend-Entwicklung > php手册当中的问题
<code class="php">class Bar { public function test() { $this->testPrivate(); $this->testPublic(); } public function testPublic() { echo "Bar::testPublic\n"; } private function testPrivate() { echo "Bar::testPrivate\n"; } } class Foo extends Bar { public function testPublic() { echo "Foo::testPublic\n"; } private function testPrivate() { echo "Foo::testPrivate\n"; } } $myFoo = new foo(); $myFoo->test(); // Bar::testPrivate // Foo::testPublic</code>
请大神解释下这段代码,就最后面输出为什么是这样?
<code class="php">class Bar { public function test() { $this->testPrivate(); $this->testPublic(); } public function testPublic() { echo "Bar::testPublic\n"; } private function testPrivate() { echo "Bar::testPrivate\n"; } } class Foo extends Bar { public function testPublic() { echo "Foo::testPublic\n"; } private function testPrivate() { echo "Foo::testPrivate\n"; } } $myFoo = new foo(); $myFoo->test(); // Bar::testPrivate // Foo::testPublic</code>
请大神解释下这段代码,就最后面输出为什么是这样?
private 可见度的方法不存在继承一说,所以调用方法在哪个类里,就是调用那个类对应的private方法(如果不存在就报错了)
坑爹的继承链方法调用..会把很多人绕晕..
建议看看c语音实现class和继承...你就会明白很多