"call to undefined function imagecreatetruecolor" error in PHP & pChart

Question

I am trying to integrate "pChart" with my PHP code. When I am trying to run the samples it gives me an error stating call to undefined function imagecreatetruecolor. The suggestion solution was to load this dll "php_gd2.dll" so I have uncommented extension=php_gd2.dll in php.ini file.

Even after that I get the same error. I have tried restarting the server & machine too.

use `get_defined_functions` to seek for function `imagecreatetruecolor` — ajreal, Dec 30 '10 at 08:09
are you sure that `gd` is set up ok? is it listed in `phpinfo()`? — prodigitalson, Dec 30 '10 at 08:16

score 49 · Answer 1 · answered Dec 30 '10 at 08:39

Use the following code to test if you have GD extension:

<?php
$testGD = get_extension_funcs("gd"); // Grab function list 
if (!$testGD){ echo "GD not even installed."; exit; }
echo"<pre>".print_r($testGD,true)."</pre>";

If you get the message that it's not installed, then check the following steps:

phpinfo() and look up php.ini path
edit php.ini: extension_dir=<path to your extensions>
edit php.ini: extension=php_gd2.dll //uncomment or add
Restart web server
Run the test script again

Thanks, I resolved it by adding the PHP Path(c:\PHP) in environmental PATH variable — karthik, Jan 01 '11 at 17:55

score 35 · Answer 2 · edited May 16 '17 at 09:44

35

In Ubuntu/Linux Mint Platform (under root), use the following command:

apt-get update && apt-get -y install php5-gd

edited May 16 '17 at 09:44

Arbab Nazar

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answered May 24 '14 at 03:03

Ranito

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On Ubuntu its `sudo apt-get install php5-gd && sudo service apache2 restart` – Poma Feb 07 '15 at 14:03
5

or `sudo apt install php-gd` on ubuntu 16.04 – Zunderscore Aug 01 '17 at 07:53

score 15 · Answer 3 · answered Aug 19 '19 at 14:26

15

For PHP 7.2

sudo apt-get install php7.2-gd

answered Aug 19 '19 at 14:26

alexmorgan.cr

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Please add some context to your answer - what do you want to solve through installing a package? – Nico Haase Aug 19 '19 at 16:06
It is a GD function - so you need the GD extension for PHP in order to use it. Above it is a common installation example (ubuntu) – Edmunds22 Nov 14 '19 at 11:28
Thanks for this answer. But as of 2020, you need to use `php-gd` without specifying a version. – Puspam Dec 07 '20 at 08:55

score 4 · Answer 4 · edited Nov 09 '18 at 21:58

4

I met this problem just now. You should exec sudo apt install php7.0-gd or vim your php.ini reopen extension=php_gd2.dll

edited Nov 09 '18 at 21:58

Stack Underflow

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answered Oct 25 '17 at 10:05

vaquel

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score 4 · Answer 5 · answered Mar 13 '19 at 11:59

This answer is an update 9 years later, but PHP has changed a lot. Please upvote the St. Woland from which this is derived...

Use the following code on your web server to test if you have GD extension:

<?php
    $testGD = get_extension_funcs("gd"); // Grab function list 
    if (!$testGD){
        echo "GD not even installed.";
        phpinfo();  // Display the php configuration for the web server
        exit;
    }
    echo"<pre>".print_r($testGD,true)."</pre>";  //display GD function list

If you get the message that it's not installed, then check the following steps:

Look at the output of phpinfo() to identify your php.ini
Edit php.ini and enable the GD extension:
- Newer PHP (7.3, fg):
  - extension=gd2 //uncomment
- Older PHP (5.x, 7.0, you should upgrade):
  - extension_dir=<path to your extensions> //uncomment or add
  - extension=php_gd2.dll //uncomment or add
GD for 7.x may not be installed
- (for Ubuntu like OS'es) sudo apt install php7.3-gd # replace version to yours
Restart web server
Run the test script again
(Remove test script when all is working, it can be a security hole)

As you can see the exact method is very version dependent. I hope this additional information can help others sort out the exact steps they might need.

score 3 · Answer 6 · answered May 15 '21 at 21:21

3

i have many version of php and i use the php-fpm. for me for php 8.0 helped is uncomment ;extension=gd in /etc/php/8.0/cli/php.ini and uncomment ;extension=gd2 in /etc/php/8.0/fpm/php.ini then install gd library as sudo apt-get install php8.0-gd.

answered May 15 '21 at 21:21

romanown

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score 1 · Answer 7 · answered Sep 27 '17 at 16:23

I have same error:

PHP Fatal error:  Call to undefined function imagecreatetruecolor() in /var/www/webphp/php/captcha.php on line 251

and my solution was this:

$ locate php.ini
    /etc/php56/php.ini

edit file php.ini and uncomment line content "extension=gd.so", save and try again

score 0 · Answer 8 · answered Jul 21 '22 at 03:29

Update for 2022: If you run into this problem with PHP 8.0.0 or more recent versions, then check out the Image Installation page at PHP's website.

In Windows, you'll include the GD DLL php_gd.dll as an extension in php.ini. Prior to PHP 8.0.0, the DLL was named php_gd2.dll.

Edit your php.ini file & make sure that this line exists. If not, add it. If it has a ; before it, remove the semi-colon.

PHP 8.0.0 or NEWER If you use XAMPP, then this file WILL exist on your file system:

extension=php_gd.dll

Older PHP versions will use this. If you use XAMPP 8.0.0+, then this file WON'T exist on your file system:

extension=php_gd2.dll

That's how you can fix this again. Enjoy!

"call to undefined function imagecreatetruecolor" error in PHP & pChart

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