<?PHP
class A {
private function foo() {
echo "baf!<br/>";
}
public function test() {
$this->foo();
}
}
class C extends A {
private function foo() {
echo "bar!<br/>";
}
}
$c = new C();
$c->test(); //Prints baf!
?>
如何使c-> test()打印吧！ ？我期待foo()将在C中被覆盖,并打印吧！有人可以向我解释吗？
通过使这两种方法受到保护,您将获得所需的结果;原因是在A :: test()中,由于私有的可见性,它只能将$this-> foo()解析为A :: foo().见
Visibility.
class A {
protected function foo() {
echo "baf!<br/>";
}
public function test() {
$this->foo();
}
}
class C extends A {
protected function foo() {
echo "bar!<br/>";
}
}
$c = new C();
$c->test(); //Prints bar!