$ip？ =? $_SERVER[ "remote _ addr"]; ? //? Get client IP
$longip？ =? IP 2 long($ IP)；
//? Programmers usually put it? IP？ Convert it into a shape and write it into a database.
//? Convert to standard when reading? IP？ address
$ip？ =? long 2 IP($ longip)；
Echo? & ltpre & gt'；
print_r(array($longip？ = & gt？ $ IP))；
& gt