Understanding the GD Library
in php , using the GD Library to manipulate the image,the GD Library is an open, dynamically created image of the source code of the public Library, available from the official website HTTP://WWW.BOUTELL.COM/GD Download it here. Currently, theGD Library supports Multiple image formats such as Gif,png,jpeg,wbmp and XBM. The GD library is typically used for image processing.
1, after installing WAMP, equipped with a good PHP development environment, found in the php.ini Php_gd2.dll, the front of the semicolon removed.
2. Locate the Php_gd2.dll file under the Ext folder in the PHP installation file directory and copy it to the C:\WINDOWS\system32 system file.
3, again, into php settings --"php extension --" run php_gd2.
(GO) php in the configuration of the GD library to solve the DEDECMS installation of GD does not support the problem