Manage-Asterisk-Conf-Interface via file handling
You can Manage Asterisk Conf file via Interface in PHP
Just download it and put the directory in centos under /var/www/html/name it as asterisk and create 2 folder under /etc/asterisk in the name of (ori, tmp) and for reload through PHP just put the username & pwd in datareload.php
You ARE DONE!! :) NJOY
Source: http://answergig.com