PHP recursion: call to undefined function

Question

The following code gives me the erorFatal error: Call to undefined function display() in /srv/http/recipes/classes/controller.php on line 4 when I try to access the page

class Controller{
    function display($template){
        display('error');
    }
}

You're not trying to call a global function, you're trying to call a class method, so use `$this`: `class Controller{ function display($template){ $this->display('error'); } }` — Mark Baker, May 21 '15 at 11:07
Now sits back and waits for the stackoverflow from the recursive call — Mark Baker, May 21 '15 at 11:09
@MarkBaker made my day, of course this function causes an stackoverflow error, I just cut the unecessary parts, now it works. — , May 21 '15 at 11:10
also refer [self vs $this](http://stackoverflow.com/q/151969) — viral, May 21 '15 at 11:13

score 3 · Accepted Answer · answered May 21 '15 at 11:09

3

Change code to this :

function display($template) {

   $this->display('error');
}

answered May 21 '15 at 11:09

chandresh_cool

11,753
3
30
45

score 1 · Answer 2 · answered May 21 '15 at 11:10

1

You have to use $this or self -

class Controller{
    function display($template){
        $this->display('error');
    }
}

Or use - self::display('error');

answered May 21 '15 at 11:10

Sougata Bose

31,517
8
49
87

score 1 · Answer 3 · edited May 21 '15 at 13:37

1

public function display($template) {

   $this->display('error');
}

edited May 21 '15 at 13:37

answered May 21 '15 at 12:19

Milap Jethwa

471
4
7

PHP recursion: call to undefined function

3 Answers3