Hi,
Please
READ (and answer) BEFORE YOU ASK A QUESTIONSince PHP 5.6.x default charset is utf-8
> i try to add this line in the end of httpd.conf file
Except in very exceptional cases, never modify the httpd.conf file manually.
If you need to add parameters, you must do so in the VirtualHost dedicated to your local site.
See :
The need for Virtual Host---------------------------------------------------------------
Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons