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imagecreatefromstring undefinded?

Posted on 2004-08-12
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1,308 Views
Last Modified: 2013-12-12
Hi,

can someone tell me why this piece of code:


    /**
    * Loads an image from a string (e.g. database)
    * @param string the image
    * @param mime mime type of the image
    * @return boolean
    * @access public
    */
    function loadData ($image,$mime) {
        if ( in_array($mime,$this->types) ) {
            $this->source=imagecreatefromstring($image);
            $this->sourceWidth=imagesx($this->source);
            $this->sourceHeight=imagesy($this->source);
            $this->sourceMime=$mime;
            $this->initThumb();
            return true;
        } else {
            trigger_error('Image MIME type '.$mime.' not supported');
            return false;
        }
    }

produces an error telling me imagecreatefromstring is not defined? Urgent.
0
Comment
Question by:Wojciech Duda
5 Comments
 
LVL 3

Expert Comment

by:thecode101
ID: 11783907
What version of php are you using?
0
 
LVL 7

Expert Comment

by:madwax
ID: 11783913
Hi mcwojtekk,

The piece of code you have there is a part of a class, which I don't know if you have. On the row:
$this->source=imagecreatefromstring($image);

You are namely calling an function called: "imagecreatefromstring" with a parameter $image. This function must be defined somewhere and it isn't in the piece of code you have provided. If you have the function in the class try to put $this-> infront of so that you get:

$this->source=$this->imagecreatefromstring($image);

Good luck!
//madwax

Cheers!
0
 
LVL 8

Author Comment

by:Wojciech Duda
ID: 11784003
I have installed EasyPHP 1.7. I have the full class but it was coded by someone else. Now if I try to view the page this error comes up:

Fatal error: Call to undefined function: imagecreatefromstring() in c:\program files\easyphp1-7\www\*******_intranet\includes\lib\thumbnail.php on line 174

From what I understand this function is part of php, why the 'undefined' error?
0
 
LVL 33

Accepted Solution

by:
snoyes_jw earned 500 total points
ID: 11784099
imagecreatefromstring requires the GD library.  You can check if this is enabled by using this code:

<?php
var_dump(gd_info());
?>

If that produces an undefined function error, you need to enable GD.  Find the file php.ini (probably in the windows directory) and check that the line extension=php_gd2.dll is not commented (does not have a leading semi-colon).  The version of PHP included with EasyPHP should have a built-in version of GD; if not, check the first link below for further instructions.

http://us2.php.net/manual/en/ref.image.php
http://us2.php.net/manual/en/function.imagecreatefromstring.php
0
 
LVL 8

Author Comment

by:Wojciech Duda
ID: 11785828
Editing the php.ini helped. Thanks a lot.
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