PHP类在构造函数中分配属性

Question

<?php 
$login1 = new Login("cam", "1234"); echo "<br>";
echo $login1->authenticate($login1->name, $login1->this->password);

class Login{
     public $name;
     public $password;

    function Login($u, $w){
        $this->name = $u;
        $this->$password = $w;
    }

    function authenticate($name, $password){
        $lookupusername = "cam"; 
        $lookuppassword = "1234";
        if($name == $lookupusername && $password == $lookuppassword){
            return "Login Success";
            echo "Login Success";
        }   else {
                return "Login Fail";
                echo "Login Fail";
            }
    }
}
?>

I am new to PHP. I am wondering why the constructor in my login class is not setting the string literals as the name and password properties of the class. I tried a set() method and that didn't work either. I also tried assigning the string literals as variables and passing them in by reference. Nope. Where am I going wrong?

Answer 1

PHP doesn't build a constructor in the same way that Java does (which is what your example appears to be based on). You'll want to use PHP's __construct method, like below:

public function __construct($u, $w) {
    $this->name = $u;
    $this->password = $w;
}

Also, your way of accessing the name attribute is correct, but password is incorrect. Use $this->password instead of $this->$password, and $login1->password instead of $login1->this->password