Installation of GD Library in PHP

Installing the GD Library extension cannot be as straightforward as other extension installations./configure--prefix=/xxx

Also need to activate png,jpeg, font and other support./configure--prefix=/xxx--with-png--with-jpeg--with-freetype=freetype Path

If the system does not have png,jpeg,freetype and so on, need to install beforehand

So if there is no freetype, we cannot use the Imagettftext () function

For example, when using a graphical verification code in the thinkphp framework, an error Fatal error: Call to undefined function imagettftext ()

After this installation we can see this through the Phpinfo

Installation of GD Library in PHP