title: Call to undefined function imagettfbbox()
body: <p>I've installed PHP 5.5 on CentOS using the IUS repos and unfortunately I cannot use <code>GD</code> even after installing everything recommended:</p>
  
  <pre><code>Package php55u-gd-5.5.14-1.ius.centos6.x86_64 already installed and latest version
  Package gd-2.0.35-11.el6.x86_64 already installed and latest version
  Package gd-devel-2.0.35-11.el6.x86_64 already installed and latest version
  Package freetype-2.3.11-14.el6_3.1.x86_64 already installed and latest version
  Package freetype-devel-2.3.11-14.el6_3.1.x86_64 already installed and latest version
  </code></pre>
  
  <p>How would I go about enabling the GD text functions in PHP?</p>
  
  <p><strong>/etc/php.d/gd.ini</strong></p>
  
  <pre><code>; Enable gd extension module
  extension=gd.so
  </code></pre>