Question

all,
I’m making a shopping cart that only accept input number with 1 decimal place.
The following is piece of code I get from a library (with some modification):

$items['qty'] = trim(preg_replace('/([^0-9\.])/i', '', $items['qty']));

This will accept any number. but I want to make it as only 1 decimal. how to modify the code?

Thanks

Answer 1

You can remove the decimal places after the first decimal place:

$items['qty'] = trim(preg_replace('/[^0-9\.]+|(?<=\.[0-9])[0-9+]+/', '', $items['qty']));

See it