Keeping 2 Decimal Places

loureiro

Hi,

I've gone to the Math Functions section on the php.net documentation and found nothing on how to format numbers to 2 decimal places regardless of whether there is a value there or not. can anyone help?

loureiro

nevermind!

loureiro

its not working! this is what i have:

number_format(array_sum($arr18), 2);

where array is grabbing a bunch of numbers from a database. can anyone tell me why its not working?

drawmack

try this instead
http://us4.php.net/manual/en/function.round.php

loureiro

that was the first thing i tried! it wont add zero's to the end if there arent numbers there already! how stupid is that? what are you suppose to do if you are working with money? not give the people the proper format? This is one of a few problems in an otherwise fantastic language! Although I still prefer C++!

Does anyone know the cast function from number to string? or what else i should try? I noticed that number_format returns a string so there might be a problem there! although im not sure why since im sending in a bunch of numbers

drawmack

Bad C++ programmer no ram for you 🙂

http://us4.php.net/manual/en/function.printf.php

loureiro

im not sure how this is going to help me! im currently looking at money_format().

how would printf() help me?

Oh I never claimed to be a "good" C++ programmer. just a "bad" C++ programmer! haha. I still have lots to learn!

YappyDog

Straight out of the manual for the sprintf() function...........

Example 6. sprintf(): formatting currency
<?php
$money1 = 68.75;
$money2 = 54.35;
$money = $money1 + $money2;
// echo $money will output "123.1";
$formatted = sprintf("%01.2f", $money);
// echo $formatted will output "123.10"
?>

http://us3.php.net/manual/en/function.sprintf.php

loureiro

thanks! i was looking at printf! i thought there would be a function though to keep the format of a number in proper currency format however i was wrong! thanks again though!

drawmack

Originally posted by loureiro
thanks! i was looking at printf! i thought there would be a function though to keep the format of a number in proper currency format however i was wrong! thanks again though!

no you're not wrong watch this

function currency_format($rawNumber) {
  $formatted = sprintf("%01.2f", $rawNumber); 
  return $formatted;
} //end currency

and for my next trick a generic version

function number_format($rawNumber,$pre,$post) {
  $numFormat = "%0" . $pre . "." .  $post . "f";
  $formatted = sprintf($numFormat, $rawNumber); 
  return $formatted;
} //end currency

Now you pick one of these functions stick it into an include file called 'common.php' then in every script you write include common.php and you'll have access to this function. My common.php file is about 200 lines long currently.

YappyDog

Except he said he was looking at the printf function, not the sprintf function.

Weedpacket

Originally posted by YappyDog
Except he said he was looking at the printf function, not the sprintf function.

[man]printf[/man]

(PHP 3, PHP 4 )
printf -- Output a formatted string
Description
void printf ( string format [, mixed args])

Produces output according to format, which is described in the documentation for sprintf().