RE: [PHP] is_int with HTML FORM

> Ok for the question. I was under the impression that PHP would > automatically > select the type for the vars to use. However if I have a field in my form > where I insert only a 4 in I'd expect the var to be an integer > (or atleast > some other whole number type of var). However is_int fails on the > 4 and sees > it as a string. So how am I going to check whether it's nothing > but digits > [0-9]. The field can hold 4 characters but they don't neccesarily > need to be > filled. So the input could be 1 through 9999. Now I could check > with > or < > but that won't work since they would still eval true if they'd > enter 3a. Ok > it would fail if they'd enter a3 but that still leaves a > possibility to crash > my script with 3a. Perhaps somebody could hand me a nice regexp or > something... I'm not yet familiar with those. Try this // checks wether a variable is a n integer of a certain length // $var = variable to check // $len = length function check_int($var,$len) { if(eregi("^[0-9]{$len}$",$var)) { return 1; } else { return 0; } } or remove the {$len} to not check for a length > > Kind regards and have a nice weekend. > Thanks I will M: