Price filter system...

el_kab0ng

I have a form that allows a user to enter in a price in the form of a number. On the backend, I check to ensure it's only a number...no $ and no decimal points..

$tmpprice = split("[$.]", $price);
$newprice = $tmpprice[0];

The problem is, if someone enters in say 7, 500, I'd like for that to show. As it stands now, my code only reads the first segment (75) and drops the rest.

Any other way to get the effect I want without losing digits? 😃

bastien

http://www.php.net/manual/en/function.is-numeric.php

el_kab0ng

If I'm reading the manual right, commas in a numerical value will result in a False return.

Some examples. Note that leading white space is OK, but not trailing white space, and there can't be white space between the "-" and the number.

is_numeric("1,000") = F
is_numeric("1e2") = T
is_numeric("-1e-2") = T
is_numeric("1e2.3") = F
is_numeric("1.") = T
is_numeric("1.2") = T
is_numeric("1.2.3") = F
is_numeric("-1") = T
is_numeric("- 1") = F
is_numeric("--1") = F
is_numeric("1-") = F
is_numeric("1A") = F
is_numeric(" 1") = T
is_numeric("1 ") = F

Also, the option to leave the field blank is allowed as well in my code for specific reasons.

I like the ability to strip off the most common of errors ($ and .) I just need to figure out a way to read the full number including any commas the users might place.

MarkB423

What about...

$num = trim($num);
$num = str_replace('$', '', $num);
$num = str_replace(',', '', $num);

I'm pretty sure that's the order of the arguments for str_replace, but double check.

el_kab0ng

hehehe.. I did that right after posting, but realized it was inefficient... so I ended up with this instead:

if ($price != '') {
$newprice = preg_replace("/[^{\d]+/","",$price);}
}

replacing anything but numbers with ""