title: PHP 5.5 not finding MySQLi constructor
body: <p>I have mySQL and PHP 5.5 installed on an AWS EC2 instance.  However, when I try</p>
  
  <pre><code>$db = new mysqli($args)
  </code></pre>
  
  <p>PHP kicks me to the autoloader, as if it can not find the constructor for the mysqli object.  I have uncommented extension=mysql.so in the php.ini file, but that does not seem to have accomplished anything.  At startup, I get </p>
  
  <pre><code>PHP Startup: Unable to load dynamic library '/usr/lib64/php/5.5/modules/msql.so' - /usr/lib64/php/5.5/modules/msql.so: cannot open shared object file: No such file or directory in Unknown on line 0
  </code></pre>
  
  <p>I thought that mysqli/native driver came prepackaged with PHP5.5, but maybe I was wrong about that. Can someone give me a hint as to how PHP5.5 plays with mysqli?</p>