title: VPS server -> Fatal error: Call to undefined function mysqli_init()
body: <p>when we try this code in <strong>hosting server</strong> its perfectly work,
  but we move code to <strong>VPS server godaddy</strong> it gives error</p>
  
  <pre><code>Fatal error:  Call to undefined function mysqli_init() in  
  /public_html/system/database/drivers/mysqli/mysqli_driver.php on line 135
  A PHP Error was encountered
  Severity: Warning
  Message:  Cannot modify header information - headers already sent by (output started at /public_html/system/database/drivers/mysqli/mysqli_driver.php:135)
  Filename: core/Common.php
  Line Number: 573 
   Backtrace: 
  
  A PHP Error was encountered
  Severity: Error
  Message:  Call to undefined function mysqli_init()
  Filename: mysqli/mysqli_driver.php
  Line Number: 135
  Backtrace:
  </code></pre>