plz help

hi , i have an apache web server in linux . Those php scripts runs in that pc. Mean while another perl scrips runs associate with that php scripts ... altogether they develop a out put and store in the mysql database.That process perfectly running.There is no any dout. Once this web server started , no body can access this machine directly ... This machnie is behind the firewall . This machnie assingned as a web server . That's mean all the ports has been blocked by the firewall except port 80 ( this web server running under port 80 ). ping also has been blocked. That certain url can access from any other out side pcs. Some request handling purpose i want to stop that perl script where it is runing in the web server . But from the web server we do it ctrl+c perl.pl I want to do this through the web browser. when pressing a stop button , it should effect to the perl script in the web server and also when pressing start button it should start again . ............................... i think u all can understand my problem , .................plz help , can some body help me to coverup the php scripting part, thanx in advance curlys