title: PHP Fatal error: Call to undefined function imagecreatefrompng()
body: <p>That is the error message that I get on my php error log. </p>
  
  <p>So far, I know that the GD library is the problem, it's not installed ( I think is not installed but it was working before in my server and now is not so I don't know what happened but I want to assume that is not installed). </p>
  
  <p>I checked if the module was installed by running <code>php -m</code> and gd doesn't show up, also <code>phpinfo()</code> doesn't show anything related to gd.
  I installed php on a CentOS server 5.9 with remi repo. Now, the problem is that I can't just run <code>yum install php-gd</code> because it won't have any effect since it was installed manually. Any ideas on how can I install just that module to my php installation?</p>