Php client ip_PHP tutorial

How does php obtain the client ip address. Php: how to obtain the client ip address through ipphp. functiongetOnlineIP () {$ cipgetenv (HTTP_CLIENT_IP); $ xipgetenv (HTTP_X_FORWARDED_FOR); $ ripgetenv (how does php obtain the client ip address?

Php obtains the client ip address, which is simple and practical.

Function getOnlineIP (){

$ Cip = getenv ('http _ CLIENT_IP ');

$ Xip = getenv ('http _ X_FORWARDED_FOR ');

$ Rip = getenv ('remote _ ADDR ');

$ Srip = $ _ SERVER ['remote _ ADDR '];

If ($ cip & strcasecmp ($ cip, 'Unknown ')){

$ Onlineip = $ cip;

} Elseif ($ xip & strcasecmp ($ xip, 'Unknown ')){

$ Onlineip = $ xip;

} Elseif ($ rip & strcasecmp ($ rip, 'Unknown ')){

$ Onlineip = $ rip;

} Elseif ($ srip & strcasecmp ($ srip, 'Unknown ')){

$ Onlineip = $ srip;

}

// LieHuo. Net Tutorial

Preg_match ("/[\ d \.] {7, 15}/", $ onlineip, $ match );

$ Onlineip = $ match [0]? $ Match [0]: 'Unknown ';

Return $ onlineip;

}

Using php to obtain the client ip address, simple and practical function getOnlineIP () {$ cip = getenv ('http _ CLIENT_IP '); $ xip = getenv ('http _ X_FORWARDED_FOR '); $ rip = getenv (...