currency

A quick search for currency regex brings up a lot of results . The problem I have in choosing one of these is that regex is difficult to verify without testing all the edge cases. I could spend a lot of time on this as I am sure hundreds of other developers have already done. Does anyone have a regex for U.S. Currency that has been thoroughly tested ? My only requirement is that the matched string is U.S Currency and parses to System.Decimal : [ws][sign][digits,]digits[.fractional-digits][ws] Elements in square brackets ([ and ]) are optional. The following table describes each element.

As I started coding my first app I used NSNumber for money values without thinking twice. Then I thought that maybe c types were enough to deal with my values. Yet, I was advised in the iPhone SDK forum to use NSDecimalNumber, because of its excellent rounding capabilities. Not being a mathematician by temperament, I thought that the mantissa/exponent paradigm might be overkill; still, googlin' around, I realised that most talks about money/currency in cocoa were referred to NSDecimalNumber. Notice that the app I am working on is going to be internationalised, so the option of counting the

Is there a way to get the float value of a string like this: 75,25 € , other than parsefloat(str_replace(',', '.', $var)) ? I want this to be dependent on the current site language, and sometimes the comma could be replaced by dot. Gordon You can use NumberFormatter::parseCurrency - Parse a currency number Example from Manual: $formatter = new NumberFormatter('de_DE', NumberFormatter::CURRENCY); var_dump($formatter->parseCurrency("75,25 €", $curr)); gives: float(75.25) Note that the intl extension is not enabled by default. Please refer to the Installation Instructions . This is a bit more

Is there a way to format a decimal as following: 100 -> "100" 100.1 -> "100.10" If it is a round number, omit the decimal part. Otherwise format with two decimal places. extraneon I doubt it. The problem is that 100 is never 100 if it's a float, it's normally 99.9999999999 or 100.0000001 or something like that. If you do want to format it that way, you have to define an epsilon, that is, a maximum distance from an integer number, and use integer formatting if the difference is smaller, and a float otherwise. Something like this would do the trick: public String formatDecimal(float number) {