How to disconnect user from php code..web

Hi there, How to disconnect live user from php code I have got a code echo "User-Name=test | radclient 192.168.182.1:3799 40 testing123" How can i use this code... I used it but it didn't disconnect the live user. Any help appreciate able. Thanks. Regards, Durjan Hussain Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel and lay it on us.http://us.rd.yahoo.com/evt=48516/*http://surveylink.yahoo.com/gmrs/yahoo_pan... hot CTA = Join Yahoo!'s user panel --------------------------------- Give spam the boot. Take control with tough spam protection in the all-new Yahoo! Mail Beta.