[PHP] Working with numbers
Could you suggest a function for displaying decimal zeros. For example I have this: $num = 2.00; $num2 = 3.00; $result = $num + $num2; echo $result; I get 5 but not 5.00 Anyone outhere? Thanks in advance! Gerry Figueroa -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] Working with numbers
Use number_format() function. See http://www.php.net/manual/en/function.number-format.php for detail. Reuben D. B At 11:22 AM 5/9/01 -0700, Gerry wrote: Could you suggest a function for displaying decimal zeros. For example I have this: $num = 2.00; $num2 = 3.00; $result = $num + $num2; echo $result; I get 5 but not 5.00 Anyone outhere? Thanks in advance! Gerry Figueroa -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] Working with numbers
At 11:22 9/5/2001 -0700, Gerry wrote: Could you suggest a function for displaying decimal zeros. For example I have this: $num = 2.00; $num2 = 3.00; $result = $num + $num2; echo $result; I get 5 but not 5.00 try $result = (float)$num + (float)$num2; -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] Working with numbers
Hello, Jennifer are you still struggling with the trailing zeros? Then try, echo round($number, 2); // with ie.: $number = 123.45 and 123.00 As I know there is no particular float, but double type in PHP. (double means double precision number -- ie.: 15 decimal places instead of 6 decimal places or something like that - , and therefore a 'double' consumes twice the space that 'float' does - in compiled languages such as C (8 bytes vs 4 bytes). So doubles and floats is closely related to the hardware representation. This is why real programming languages usually deal with floats and doubles. Decimal (or numeric) comes from an another domain of computer science, namely database systems. Decimal is a completely different approach of representing numbers, dealing with precision as commonly used in daily life, ie .: cents or gramms (as you wish in your shopping cart class). In a DBMS the storage space never does matter, it focuses the ease of use and readability. You can specify how many digits are for storing the integer part and how many the fraction part of a number. In other words, this means that you *can specify* the maximum storable number (respect the whole number of digits) and minimal resolution / granulation (respect to number of fraction digits). I hope this helps, Papp Gyozo - [EMAIL PROTECTED] ps.: my english is not so good, but i hope, you can understand what i was talking about. - Original Message - From: Jennifer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: 2001. május 4. 07:39 Subject: Re: [PHP] Working with numbers Christian Reiniger wrote: On Thursday 03 May 2001 08:53, Jennifer wrote: I have a shopping cart that allows decimal points for quantities. I like it like that, but would like to remove any trailing zeros and if the quantity is not a fraction I would like to remove the decimal point too. What would be the easiest way to do this? I don't see any function that would make it easy. It's so easy that you don't need a function for it :) $Qty = 12.470; $Qty_real = (double) $Qty; echo $Qty - $Qty_real; In other words - convert it from a strin to a floating-point number and PHP will do the rest. I've done some searching on the php site for more info about double and float etc, but I don't really understand anything I found. Can someone give me an explanation about the difference between decimal, float, double? Should I be using decimal as my column type in the MySQL database or should I be using a different column type? Jennifer -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] Working with numbers
I have a shopping cart that allows decimal points for quantities. I like it like that, but would like to remove any trailing zeros and if the quantity is not a fraction I would like to remove the decimal point too. What would be the easiest way to do this? I don't see any function that would make it easy. Jennifer -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] Working with numbers
On Thursday 03 May 2001 08:53, Jennifer wrote: I have a shopping cart that allows decimal points for quantities. I like it like that, but would like to remove any trailing zeros and if the quantity is not a fraction I would like to remove the decimal point too. What would be the easiest way to do this? I don't see any function that would make it easy. It's so easy that you don't need a function for it :) $Qty = 12.470; $Qty_real = (double) $Qty; echo $Qty - $Qty_real; In other words - convert it from a strin to a floating-point number and PHP will do the rest. -- Christian Reiniger LGDC Webmaster (http://sunsite.dk/lgdc/) Drink wet cement. Get stoned. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] Working with numbers
what about function round() with precision argument ?
check it:
for ($i = 0; $i 10; $i += 0.25) {
echo round($i,2). br;
}
- Original Message -
From: Jennifer [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: 2001. május 3. 08:53
Subject: [PHP] Working with numbers
I have a shopping cart that allows decimal points for quantities.
I like it like that, but would like to remove any trailing zeros
and if the quantity is not a fraction I would like to remove the
decimal point too.
What would be the easiest way to do this? I don't see any
function that would make it easy.
Jennifer
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Re: [PHP] Working with numbers
At 01:39 04.05.01 -0400, you wrote: Ok Jennifer lets do some basics ;-) I've done some searching on the php site for more info about double and float etc, but I don't really understand anything I found. Can someone give me an explanation about the difference between decimal, float, double? decimal is a straight number f.e 123456 the size/length of this number belongs to the used hardware/compiler (normally 64bit???) it could be signed so it could be -123456 or +123456 float is a number like 123,456 or 0,123456 size/signed see above double is also a number like float but with the double size (normally 128 bit ??) Should I be using decimal as my column type in the MySQL database or should I be using a different column type? If you want to store float numbers like prices or so you could use float(M,D) where M ist the langth of all numbers and D is the number of the fraction(is that word right) I mean what´s behind the , . Look in the manual of mysql datatypes to get more information about numbers and other interesting datatypes. HTH Oliver -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
