CODEWITHSUNDEEP
php
user3299251
user3299251

Reputation: 108

php placement of the dot in a long number

I want to display a large number with a leading zero and a dot after.

The balance i want to display starts with 0.000000000000000000 ( 18 zeros after the dot ). This should be able to go up to 99.00000000000000000.( 17 zeros after the dot ).

I did a lot of trial and error but i just can't seem to get the dot in there. As far as for the zeros i got it working. What i have now is:

$leadingBalance = sprintf("%019d", $balance);
echo $leadingBalance;

This will display the correct balance but i need to place the dot in there. It means that if my balance has 17 or 18 numbers it should place the dot as 0.0000... If the balance has 19 numbers it should place the dot as 00.0000...

Whatever i try, how much i look up i can't figure it out.

Upvotes: 0

Views: 639

Answers (2)

Mausumi
Mausumi

Reputation: 45

For eg:

$n1 = 0;
$n2 = 99;
 echo number_format($n1,18)."<br>"; 
 echo number_format($n2,18)."<br>";

See the documentation for number_format: http://php.net/number_format

The functions parameters are:

string number_format ( float $number , int $decimals = 0 , string $dec_point = '.' , string $thousands_sep = ',' )

So use:

number_format(1000000000000000, 2, '.', '');

Which means that you don't use any (= empty string) thousands separator, only a decimal point.

or if you just want padding of 19 zero after decimal point

just use

 sprintf("%0.19f",$number);

or else

if u want a number always 20 digit without caring about whole no and decimal value than use str_pad()

eg:

$no = sprintf("%0.2f",100); //100.00

this will convert your no to decimal point with 2 digit after decimal now just pad some digit if require to make it 20 digit long

  echo str_pad($no,20,"0"); //100.00(15 zero after this)

this will check no of digit available and pad 0 to make it 20 digit

for more ref:https://www.w3schools.com/php/func_string_number_format.asp

Upvotes: 1

Paul Karam
Paul Karam

Reputation: 4225

You are using %019d when you actually wants a float number, try this: 

<?php
    $format = '%0.19f';
    $args = 9;
    $result = sprintf ($format, $args);
    //$result will be equal to 9.0000000000000000000
?>

<?php
    $format = '%0.19f';
    $args = 99;
    $result = sprintf ($format, $args);
    //$result will be equal to 99.0000000000000000000
?>

Edit:

Since it looks like you want your whole number to be equal to 20 digits only, you may try to do some math if number_format doesn't do your job. You can try something like: 

<?php
    $number = 999;
    $number_length = strlen($number);
    $format_len = 20 - $number_length;
    $format = '%0.'. $format_len .'f';
    $result = sprintf($format, $number);
?>

Upvotes: 0

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