Now use the phpinfo () method as mentioned in step 2 to check whether the GD library is installed in the PHP server. It will show information about the PHP’s configuration.

Compilation of PHP 7 fails when --with-external-gd (with --enable-gd) flag is active. GD_FLIP_X constants are somehow undeclared. GD version 2.3.1 worked fine. The problem is with 2.3.3.

Since PHP is free and you can add the bundled GD library at no cost, it makes sense to use this as a cost-effective method for providing graphical data representations.