GD library support is required in PHP to manage graphics and images. This is a power full tool to draw graphs, diagrams on the fly and create attractive animations. You can create banners and buttons on the fly using gd library support.

We can enable or disable any support by working on PHP.INI file. Search for this file in your system and open it. You will find a line like this shown in the picture and check that your remove ; before this to make gd support enable.

We will try some steps here to identify GD support is enabled or not. Mostly PHP 4 and higher versions comes with GD support. Some time it may not be enabled. To know this we can use phpinfo function and check GD support is available or not. Here is an image of what phpinfo function displays in a GD enabled system.
The above image displayed by phpinfo function shows that GD support is enabled in the php system and ready to use.

GD functions in PHP for handling images & graphs How to check GD support in PHP Header for an image in browser Drawing of graphic lines using GD Plotting line graph by drawing data from table Adding vertical grid to line graph Resizing and adding border to Images Script for Watermarking image on the fly using PHP GD