How to solve the problem of generating a negative number when the PHP function ip2long is converted to an IP address when the value is too large

[Cause]: Because PHP's integer type is signed, and your IP addresses will result in negative integers.
[Solution]: As mentioned in its official manual, you can "you need to use the" % u "formatter of sprintf () or printf () to get the string representation of the unsigned IP address"
That is, printf ('% U', ip2long ('IP address '));
Or convert it to binary first and then convert it to decimal,Bindec(Decbin(Ip2long('IP address ')));
Test]
$ StrIp = '1970. 118.0.0 ';

Echo ip2long ($ strIp); // The-1233780736 output at this time
Echo '<br/> ';
Echo bindec (decbin (ip2long ($ strIp); // output 3061186560, consistent with MySQL function output ~

[Note ]:
NumberBindec(String $ binary_string); // convert binary to decimal
StringDecbin(Int $ number); // convert to binary in decimal format