phpMyAdmin - Error

The mysqli extension is missing. Please check your PHP configuration. <a href="/Documentation.html#faqmysql" target="documentation"><img src="/themes/dot.gif" title="Documentation" alt="Documentation" class="icon ic_b_help" /></a>

Why this error?
My server upgrade php to 5.5 and me downgrade to php 5.3 and error in my phpMyadmin?
How to solve this error ??


[IMG]http://imagizer.imageshack.us/v2/xq90/538/UpCfn2.jpg" alt="[URL=https://imageshack.com/i/eyUpCfn2j][IMG]http://imagizer.imageshack.us/v2/xq90/538/UpCfn2.jpg" />
thanks