PHP类与对象中的private访问控制的疑问

PHP 2018-12-30

<div class="codetitle"><a style="CURSOR: pointer" data="4839" class="copybut" id="copybut4839" onclick="doCopy('code4839')"> 代码如下:

<div class="codebody" id="code4839">
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

为啥第一行会输出Bar::testPrivate呢？
一些资料：
//www.jb51.cc/article/31709.htm
还有PHP官网上，关于这段代码的贡献者回复中，也找到了一条：
http://www.php.net/manual/zh/language.oop5.visibility.php#87413

private private 访问控制

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