Im making a website for a gaming community, they currently play counter-strike source, which each user account is assigned a unique ID. This is called there steam ID, I need to know how to make a form only accept the format these ID's come in which is X:X:XXXXXX
The X are the locations for the numbers of each persons ID. and the the part after X:X: can be anywhere from 1-8 digits long. I need to make a form that will only accept this ID format, how would i do this?
A few examples of steam ID's are:
0:1:18805908
0:0:26566428
0:1:2391425