Why does this print out 33 instead of 11?

Source: Internet
Author: User
If you remove the constructor, print 11 without removing it, then print 33. Public $name = ' 11 '; Will this sentence not be executed?


  
   name=33;   } }$a=new man();echo $a->name;?>

Reply content:

If you remove the constructor, print 11 without removing it, then print 33. Public $name = ' 11 '; Will this sentence not be executed?


  
   name=33;   } }$a=new man();echo $a->name;?>

The declaration or initialization of a variable should be executed first, and the constructor will be assigned a value.

Isn't this the most basic grammar?

Constructors First Run

Initialize the variables first,

The constructor is then executed.

The value of $name when initialized is changed in the constructor

class man{    public $name='11';    public function __construct(){        echo $this->name;        $this->name=33;    }}$a=new man();echo $a->name;

?>

Results: 1133

1, when you new Man (), the construction method is executed, so the value of the $this->name property inside will be changed

The man class has a constructor that executes every time new object is executed, and the value of $name becomes 33 after execution.

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