integer to big, php math calculations

[devWhiz]

<?php

$a = 350000;
$b = 3600000000;

echo $hmm = $a / $b;

 

outputs

 

9.7222222221617E-5

 

while

 

<?php

$a = 350000;
$b = 360000000;

echo $hmm = $a / $b;

 

outputs

 

0.000972222222

 

its only one digit shorter,

 

how can I get the first code to produce the same results, Ive tried using float, int maxes out and Ive changed my floating point in php.ini, no luck

[anupamsaha]

Try this:

<?php

$a = 350000;
$b = 360000000;
$hmm = $a / $b;

echo sprintf("%f", $hmm);

[devWhiz]

ok that works but it shortens up the decimal and rounds it, is there a way to have it calculate the decimal without rounding it?

 

like 0.00092144444443

 

rounds to 0.000920

 

how can I get it to keep it at 0.00092144444443

 

[anupamsaha]

<?php
$a = 350000;
$b = 360000000;

$hmm = $a / $b;
echo sprintf("%.10f", $hmm); // change 10 to any number that you want to display in the result after the decimal
?>

[ignace]

bcsub($a,$b);

ok that works but it shortens up the decimal and rounds it, is there a way to have it calculate the decimal without rounding it?

 

like 0.00092144444443

 

rounds to 0.000920

 

how can I get it to keep it at 0.00092144444443

 

 

The correct result of 350000 / 360000000 = 0.0009722222222.. not 0.0009214444.. The reason to why you get an incorrect output is due to the precision loss of a float. Using the BCMath module of PHP you get:

 

echo bcdiv(350000, 360000000, 10); // 0.0009722222

 

10 is the level of precision you need.