title: Cannot find pgsql.so in php.ini
body: <p>After installed php5-pgsql on Ubuntu using the command</p>
  
  <pre><code>sudo apt-get install php5-pgsql
  </code></pre>
  
  <p>I couldn't find pgsql.so file in php.ini, when i do a </p>
  
  <pre><code> locate pgsql.so
  </code></pre>
  
  <p>nothing returns. So anyone knows why the installation shows successful, but the module file doesn't exist?</p>