PHP Objects Overwriting problem

Question

here's my problem:

$Me[1] = new User(1);
$Me[2] = new User(2);
$Me[3] = new User(19);
$Me[4] = new User(75);
$Me[5] = new User(100);
foreach ($Me as $k) echo $k->getId();

I'm trying to create 5 users with, of course, different ID. The problem is that the User with ID 2 'overwrite' the User with ID 1, the User with ID 3 'overwrite' the User with ID 2, the User with ID 4 'overwrite' the User with ID 3, the User with ID 5 'overwrite' the User with ID 4.

I don't really know how to fix this, can anybody please help me?

Thanks in advance for your help!

I can't get the $id from the parent class. It seems like the last class initialized "overwrite" all the values (maybe becouse I declared it static? but how can I get it?)..

This is my class:

class User {
    public static $id;

    public function __construct($id) {
        $this->id = $id;
    }

    public function getId() {
        return $this->id;
    }
}

class Sub extends User {
    public function __construct($id) {
    }

    public function printUserLink(){
            echo '<a href="userprofile.php?userid='.parent::getId().'">Go to user profile</a>';
    }
}

How do I get the Id in the "Sub" class?

Works for me. The error is somewhere else.

Álvaro González
– Álvaro González

2010-06-25 10:10:03 +00:00
Commented Jun 25, 2010 at 10:10 — Álvaro González
– Álvaro González, Commented Jun 25, 2010 at 10:10
What is $me? has it been declared ?

RobertPitt
– RobertPitt

2010-06-25 10:16:17 +00:00
Commented Jun 25, 2010 at 10:16 — RobertPitt
– RobertPitt, Commented Jun 25, 2010 at 10:16
What is the output of the pasted code?

Shade
– Shade

2010-06-25 10:17:44 +00:00
Commented Jun 25, 2010 at 10:17 — Shade
– Shade, Commented Jun 25, 2010 at 10:17
That's a crystal clear case of Multiple Personality :)

Gordon
– Gordon

2010-06-25 10:29:53 +00:00
Commented Jun 25, 2010 at 10:29 — Gordon
– Gordon, Commented Jun 25, 2010 at 10:29
You need to show your User class definition.

Felix Kling
– Felix Kling

2010-06-25 11:06:31 +00:00
Commented Jun 25, 2010 at 11:06 — Felix Kling
– Felix Kling, Commented Jun 25, 2010 at 11:06

Mike · Accepted Answer · 2010-06-25 10:56:13Z

1

It's likely that the problem lies in your User class. This simple example works as expected:

class User {
    private $id;

    public function __construct($id) {
        $this->id = $id;
    }

    public function getId() {
        return $this->id;
    }
}

$Me[1] = new User(1);
$Me[2] = new User(2);
$Me[3] = new User(19);
$Me[4] = new User(75);
$Me[5] = new User(100);

foreach ($Me as $k) echo $k->getId() . "\n";

Outputs:

Without details of your User class (as suggested by ircmaxell), resolving the problem will be tricky.

answered Jun 25, 2010 at 10:56

Mike

21.7k2 gold badges48 silver badges66 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

AldoB Over a year ago

I can't get the $id from the parent class. It seems like the last class initialized "overwrite" all the values (maybe becouse I declared it static? but how can I get it?).. This is my class: class User { public static $id; public function __construct($id) { $this->id = $id; } public function getId() { return $this->id; } } class Sub extends User { public function __construct($id) {} public function printUserLink(){ echo '<a href="userprofile.php?userid='.parent::getId().'">Go to user profile</a>'; } } How do I get the Id in the "Sub" class?

Mike Over a year ago

Yes, it will be because you have declared it as static (see Static Member Variables for an use of static member variables). Why do you need it declared as static?

AldoB Over a year ago

Becouse I don't know how to access it from a subclass (parent::$var doesn't work..) How can I do?

Collectives™ on Stack Overflow

PHP Objects Overwriting problem

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related