[SOLVED] show 2 digit of decimal

[asmith]

hey guys

 

i want to show number which have more than 2 decimal to a 2 decimal form but not rounding or floor  like:

 

2.234 =>  2.23

54.73453 => 54.73

1.1 = > 1.1

4.56 => 4.56

45.53218753 => 45.53

12362.534 => 12362.53

 

what is the simplest way to do such thing ?

 

i've tried money_format , but it rounds the number and can't be run in windows, only on linux servers .

 

i was thinking about treat the number as a string, explode it with " . " , then count the digits after "." .  and substr it to 2 digits . but it is way too much coding for a simple purpose .

 

any better idea ?

 

thanks

[ziv]

try this one:

number_format

 

[Daniel0]

What you are doing is rounding it.

 

$num = round($num, 2);

[asmith]

What you are doing is rounding it.

 

$num = round($num, 2);

 

 

round(23.345 , 2)  = >    23.35 

 

what i want is  23.34

 

 

[Daniel0]

<?php
echo preg_replace('/^(\d+\.\d{2})\d*$/', '\\1', '23.345');
?>

[ziv]

y to use round or worse - to use regex for this simple task, if you have the number_format function?

 

<?php
$pi = 3.14159265;
echo number_format($pi, 2);

[Daniel0]

Because they don't do the same?

 

number_format('1000.568', 2); // 1,000.57
round('1000.568', 2); // 1000.57

[ziv]

Because they don't do the same?

 

number_format('1000.568', 2); // 1,000.57
round('1000.568', 2); // 1000.57

 

if you don't need the thousands comma, no problem:

<?php
echo number_format('1000.568', 2, '', '.'); // 1000.57

[Daniel0]

<?php
class Timer
{
private $start_time;

function __construct()
{
	$this->start_time = microtime();
}

public function getTime()
{
	$start_time	= explode(' ', $this->start_time);
	$stop_time	= explode(' ', microtime());

	$start_time	= $start_time[0] + $start_time[1];
	$stop_time	= $stop_time[0] + $stop_time[1];

	return $stop_time - $start_time;
}
}

$float = 1168168.681681;
$precision = 2;
$operations = 100000;

$timer = new Timer();
for($i = 0; $i < $operations; $i++)
{
$new_num = round($float, $precision);
}
$round_time = $timer->getTime();
echo "round: {$round_time}\n";

$timer = new Timer();
for($i = 0; $i < $operations; $i++)
{
$new_num = number_format($float, $precision, '.', '');
}
$number_format_time = $timer->getTime();
echo "number_format: {$number_format_time}\n";
?>

Output:

round: 0.2045259475708

number_format: 0.69444394111633

 

round() is around 3.4 times faster.

[asmith]

thanks guys that was what i needed .

btw , this is going to be intresting!

[asmith]

lol was wrong didnt work :

 

 

number_format('1234.345', 2, '', '.')

 

will echo 1.23435

 

way wrong !

 

 

number_format('1234.345', 2)

 

echo  1,234.35  !!!  it rounds too !!!

 

 

 

[Daniel0]

Use the regex I posted: http://www.phpfreaks.com/forums/index.php/topic,178512.msg794517.html#msg794517

[rajivgonsalves]

its simple math... here you go

 

<?php

$intNumber = "2.234";

echo ((int) ($intNumber*100))/100;
?>

 

hope its helpful 

 

[asmith]

lol yes rajiv! thanks!! it is simple math !! lol