Title: [Plugin: Donation Thermometer] Undefined function error
Last modified: August 20, 2016

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# [Plugin: Donation Thermometer] Undefined function error

 *  [ohioliberty](https://wordpress.org/support/users/ohioliberty/)
 * (@ohioliberty)
 * [13 years, 10 months ago](https://wordpress.org/support/topic/plugin-donation-thermometer-undefined-function-error/)
 * We would love to use this plugin on our site, but we are getting the following
   error:
 * Call to undefined function imagettfbbox() in /home/oliberty/public_html/wp-content/
   plugins/donation-thermometer/donation_therm.php on line 263
 * Any ideas what we need to enable or install to fix this?
 * We are running on cPanel/WHM 11.32.3 (build 21) and CentOS 5.8
 * [http://wordpress.org/extend/plugins/donation-thermometer/](http://wordpress.org/extend/plugins/donation-thermometer/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [rhewlif](https://wordpress.org/support/users/henryp/)
 * (@henryp)
 * [13 years, 3 months ago](https://wordpress.org/support/topic/plugin-donation-thermometer-undefined-function-error/#post-2878009)
 * You will need to have the GD library of image functions installed on your server
   to be able to use this plugin. If you do a quick google you can find out how 
   to check on this. You also need PHP 4. Sorry for the late response, but am back
   in the uk now.

Viewing 1 replies (of 1 total)

The topic ‘[Plugin: Donation Thermometer] Undefined function error’ is closed to
new replies.

 * ![](https://ps.w.org/donation-thermometer/assets/icon-256x256.png?rev=3197594)
 * [Donation Thermometer](https://wordpress.org/plugins/donation-thermometer/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/donation-thermometer/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/donation-thermometer/)
 * [Active Topics](https://wordpress.org/support/plugin/donation-thermometer/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/donation-thermometer/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/donation-thermometer/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [rhewlif](https://wordpress.org/support/users/henryp/)
 * Last activity: [13 years, 3 months ago](https://wordpress.org/support/topic/plugin-donation-thermometer-undefined-function-error/#post-2878009)
 * Status: not resolved