title: Codeigniter automatically encrypts my sessions in database
body: <p>On my local server when i store session, data stored like this :</p>
  
  <pre><code>__ci_last_regenerate|i:1440489684;admin_login|s:1:"1";login_user_id|s:1:"1";name|s:9:"Mr. admin";login_type|s:5:"admin";
  </code></pre>
  
  <p>On my server it becames like this :</p>
  
  <pre><code> 58nyvA9O3PXABoqyVj8j8Y52TIRZCwUOYtNp3TjL4eVCsuYbvMQDbftpa9w7ahgy9M6XXR0-o6tWcKjW6Krlw2fUkoCYAESIQw4XFY89m-guUhqNyqgHg5XLjBVZeFr_QkjF1KhAaY3EGluJUSurxZRZPlNMBLW2Hv-0fMfTmIf3LhgPdeUTEHVgc_CpjHprpDbTu-aFNVA7piPMNjTxBJk0Nza3_Cl_IRUaFuO48QX67-DvMLOzcAGVoHjIQbAaDOJsECaalbGpKZbPQJE7vmNv8l15dbBP2ozn3H0Wwtw.
  </code></pre>
  
  <p>What could possibly cause this?</p>