Questions about the attack on php

PHPcode & lt ;? PhpclassA {[color # FF0000] private [color] $ name & quot; Nciaer & quot; publicfunctionsay () {echo $ this-& gt; name. & quot; & lt; br & g questions about php inheritance

PHP code

  
   name . "
";    }}class B extends A {    public $name = "Fansa";}$b = new B();$b -> say();?>

Output result:
Nciaer
----------------------------

PHP code

  
   name . "
";    }}class B extends A {    public $name = "Fansa";}$b = new B();$b -> say();?>

Output result:
Fansa


Why $ B calls the member method say () to output the $ name of the subclass when the parent class variable $ name is public;
When the parent class variable $ name is private, $ B calls the member method say () to output the $ name of the parent class;

------ Solution --------------------
Private
How can it be inherited?