Uncommon ip address conversion functions and instance applications in php

$ Ip = "127.0.0.1"; // define an ip address
$ Long = ip2long ($ ip); // Convert the ip address to an integer.
If ($ long =-1 | $ long = false) // if the execution is incorrect
{
Echo 'invalid ip, please try again '; // output error message
}
Else
{
Echo $ ip. "n"; // 192.0.26.166
Echo "<br> ";
Echo $ long. "n"; //-1073732954
Printf ("% un", ip2long ($ ip); // 3221234342
}

//

$ Ip = "127.0.0.1"; // define an ip address
$ Long = ip2long ($ ip); // Convert the ip address to an integer.
If ($ long =-1 | $ long = false) // if the execution is incorrect
{
Echo 'invalid ip, please try again '; // output error message
}
Else
{
Echo $ ip. "n"; // 192.0.26.166
Echo "<br> ";
Echo $ long. "n"; //-1073732954
Printf ("% un", ip2long ($ ip); // 3221234342
}

// Give another common word instance

$ Number = "2130706433"; // define a value
$ Ip = long2ip ($ number); // convert to the ip address format: 127.0.0.1
Echo $ ip;