What exactly is php $this

General statement: ￥this represents the current class object. This is very unclear.

$this depends on the execution object (environment) when the method where ￥this is located is called.

Method execution environment: In which object environment the current method is executed, the The ￥this of the method represents the object. For the object that restores the original method layer by layer, for example

class A{

                                                                                                            echo 'aa'; public function run(){
                var_dump($this);
      }
}
$ai = new A();
$ai->run();
echo "
===== ==
";
class B{
              public function m(){               var_dump($this); A::run();
}
}
$li = new B();
$li->m();
?>


But if it is inherited, it will be calculated separately. This run method comes from inheritance, so this is the class a. $this-> m (); ();
$li- >run();
?>


The above introduces what php $this is, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.