PHP: Why am I getting "Undefined property: myCar::$model"

user_15012098 0
Viewed 680

I'm new to PHP and I am trying to follow a course.

<?php 
    class myCar {
        function myCar() {
            $this->model = "Sports";
        }
    }

    $Range_Rover = new myCar();

    echo $Range_Rover->model;
?>

According to the tutorial I should get the output "Sports" What is causing the code to result in an error of undefined property?

Warning: Undefined property: myCar::$model in C:\xampp\htdocs\Test\index.php on line 16

Screenshot of tutorial results

Many thanks, Stuart

html php
3 Answers

Correct way to do it:

<?php 
    class myCar {
        public $model;
        function __construct() {
            $this->model = "Sports";
        }
    }

    $Range_Rover = new myCar();

    echo $Range_Rover->model;

Output: https://3v4l.org/bnNrm

Note: Why above is needed

a) Defining constructor name as class name is an older practice, and it will give you deprecation message for some php version (php 7 versions).

b) Also from php8 it will be treated like a normal function, not as a constructor, so your purpose will not solve.

user_42483280

You need to declare the class variable before using it. Just add "public $model;" before function mycar().

user_40790420

You should declare model like this

public $model;

Also as some answers told before, the constructor needs to be defined as __constructor now. this would look like

<?php 
    class myCar {
        public $model;

        function __constructor() {
            $this->model = "Sports";
        }
    }

    $Range_Rover = new myCar();

    echo $Range_Rover->model;
?>
user_91836980
Related