pattern matchin

[Anon]

Hi there,

I have a form that requires people to enter a price, ie 129.95 or simply 99. How can I make sure that they enter just numbers and/or numbers and 1 decimal spot?

The following:
ereg("[^{0-9]",$price)}

checks for just numbers... but if someone enters a number with a decimal then it fails...

any help?

Thanks,

-dr

[Anon]

Well, regular expressions can be a bitch I agree

ereg("^{[0-9]+(.[0-9]{1,2})?$",} $price);

That should do the trick for you, broken down it means

string must begin with a number. The number must occure at least 1 time. then it check if there is a patter that matches .number

the .number must occure either as .4 or .56 or it cannot occure at all.

If you wanted to have a dot added thent he whole thing would read

ereg("^{[0-9]+.{1}([0-9]{1,2})?$",} $price);

which simply says. There MUST be a dot

Ia mnot an expert for regex, but that should work

[Anon]

why don't u use the is_double and is_integer function to determine whether the var came with decimal point or integer.
it is much more simple