Q:

Which entry in phpinfo() tells about the GD library?

I want to make a captcha programming inside my form. I googled about "php captcha" and I found that the GD library should be installed. I made a phpinfo() and I cannot see what is the keyword to recognize the GD library ; the version of my PHP is 5.2.1
So what is the entry text of the GD library in phpinfo() , and how to enable the GD library ?

A:

Go for gd section and check (if you have enabled you found a new section with named gd)
GD Support enabled
GD Version bundled 

For more check :- http://www.zoopable.com/check-php-gd-library-installed-or-not/
For enable:-
Windows :-  uncomment the extension=php_gd2.dll line in your php.ini file 
Linux :- yum install php-gd or apt-get install php5-gd 
Be sure to restart your apache after installing the library.
For more read manual :- http://php.net/manual/en/image.installation.php

