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Archive for the 'Miscellaneous Code' Category
ColdFusion IP to Num and Num to IP for database storage
Author: The Kaptain14.06.2007
Yet another piece of hand and useful code from the Kaptain. There has been a ton of discussion using this example over at Perkiset’s (AKA The Cache) so The Kaptain took a few minutes to get in on the action. You can find ASP, PHP, and a C based PHP extension at The Cache to accomplish the same thing but it’s in ColdFusion here just for fun.
Here you go!
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | <cfscript>
function ip2num(ip){
oct1 = listfirst(ip,'.');
oct2 = listgetat(ip,2,'.');
oct3 = listgetat(ip,3,'.');
oct4 = listlast(ip,'.');
returnThis = 1 & iif(len(oct1 LT 3),DE("#repeatstring('0',3-len(oct1))##oct1#"),DE("#oct1#")) & iif(len(oct2 LT 3),DE("#repeatstring('0',3-len(oct2))##oct2#"),DE("#oct2#")) & iif(len(oct3 LT 3),DE("#repeatstring('0',3-len(oct3))##oct3#"),DE("#oct3#")) & iif(len(oct4 LT 3),DE("#repeatstring('0',3-len(oct4))##oct4#"),DE("#oct4#")) ;
return returnThis;
}
function num2ip(num){
num = removechars(num,1,1);
oct1 = left(num,3);
oct2 = mid(num,4,3);
oct3 = mid(num,7,3);
oct4 = right(num,3);
returnThis = "";
for(i = 1; i LTE 4; i = i + 1){
currOct = evaluate("oct#i#");
for(z = 1; z LTE 3; z = z + 1){
if(left(currOct,1) EQ 0){
currOct = removechars(currOct,1,1);
}else{
if(i LT 4){
returnThis = returnThis & currOct & '.';
}else{
returnThis = returnThis & currOct;
}
writeOutput(currOct & "<br>");
break;
}
}
}
return returnThis;
}
</cfscript>
|
Pretty simple eh? Here is the usage:
1 2 3 4 5 6 7 | <cfoutput> <cfset ipnum = ip2num("64.168.11.1")> <cfset numip = num2ip(ipnum)> #ipnum# - #numip# </cfoutput> |
The output:
Original IP : 64.168.11.1
ip2num: 1064168011001
num2ip: 64.168.11.1
Enjoy!
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