PHP $this->方法调用

Reference: http://docs.php.net/manual/en/language.oop5.late-static-bindings.php

Note:
In non-static contexts, the called class will be the class of the object instance. Since $this-> will try to call private methods from the same scope, using static:: may give different results. Another difference is that static:: can only refer to static properties.

Example #1

class Father{    public function __construct()    {        $this->init();    }    private function init()    {        echo 'father' . PHP_EOL;    }}class Son extends Father{    public function __construct()    {        parent::__construct();        $this->init();    }        private function init()    {        echo 'son' . PHP_EOL;    }}new Son();

输出

fatherson

Example #2

class Father{    public function __construct()    {        $this->init();    }    private function init()    {        echo 'father' . PHP_EOL;    }}class Son extends Father{      private function init()    {        echo 'son' . PHP_EOL;    }}new Son();

输出

father