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Fatal error: Call to undefined function: imagecreate()

Posted by: admin November 30, 2017 Leave a comment

Questions:

I’m trying to put some graphics on a web page and at my prototype at the computer it’s all working fine at the localhost. But now I uploaded the files to a server and I’m having a problem to plot some graphics. In my computer they are plotted, but on the server they are not.

I’m getting this error
Fatal error: Call to undefined function ImageCreate() in /home/t1g01/phplot.php on line 248

Line 248

$this->img = ImageCreate($this->image_width, $this->image_height);

I’m using phplot, and I uploaded the files form phplot too. Can anyone help me ?

Sorry for any mistake in English and thank you in advance.

Answers:

This means your installation of php doesn’t have the gd library installed/enabled.

http://www.php.net/manual/en/image.installation.php

Questions:
Answers:

If you are using a Linux machine then execute this command from console:

sudo apt-get install php5-gd

to install the php_gd2.dll extension. It will then work after an Apache restart.

Questions:
Answers:

Your server most like does not have GD (the built in PHP image processing library) enabled. You can check this by looking for “GD” in the output of :

<?php
phpinfo();
?>

If not, check the PHP docs on how to enable it: http://www.php.net/manual/en/book.image.php

Questions:
Answers:

For Fedora, CentOS

dnf install php-gd
systemctl restart httpd.service

On Ubuntu

apt-cache search php*-gd
apt-get install php<version>-gd
systemctl restart apache2.service

Windows users see: http://php.net/manual/en/image.installation.php

Questions:
Answers:

It seems that your GD library is not being used. Double check your php.ini file.

Questions:
Answers:
  1. Copy the file php_gd2.dll from your PHP’s ext/ directory to where
    you have your php extensions. (No need to copy if php_gd2.dll is in the extension
    dir already. Look in php.ini for ‘extension_dir’ directive to
    find what is your current extension directory)

  2. Modify your php.ini and change the following line:

;extension=php_gd2.dll

to:

extension=php_gd2.dll

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