I want to use `number_format`

function in PHP. For example:

```
$number = 234.51;
echo number_format($number,2);
```

This works for float numbers but I want to use it for different numbers. If a number is decimal and doesn’t have any floating points, it shows like : 145.00 . How can I fix this? I mean I want to show as many floating points as needed, not more.

Investigate the `printf`

and `sprintf`

functions instead of `number_format`

.

They give the ability to format numbers as you wish.

```
printf("%d", $int)
```

would be appropriate for a decimal integer.

```
printf("%4.2f", $float)
```

would be appropriate for a floating point number with two decimal places.

`number_format`

seems to be intended for internationalisation of currency output, but I don’t think that’s what you want because you mentioned decimal ‘whole’ numbers.

### Answer：

I think I can’t get what I want from number_format so I did this and it works fine :

```
public function floatNumber($number)
{
$number_array = explode('.', $number);
$left = $number_array[0];
$right = $number_array[1];
return number_format($number, strlen($right));
}
```

thanx all for your replies.

### Answer：

I don’t know a better way to do this, but you can compare the type, like the code below:

```
$number = 234.159;
if(is_float($number)) {
echo number_format($number, 2);
}else {
echo $number;
}
```

### Answer：

Whilst it’s a bit quick and dirty, you could simply do a…

```
str_replace('.00', '', number_format($potentialFloat, 2));
```

Far from ideal, but effective.

### Answer：

I think the key problem is defining how many positions are needed. Would you define 13.01 as 13 because the first decimal was a 0? Since printf and number format needs you to know how many decimals, I don’t know that that would work for you.

Maybe something like this (which is a lot of functions, but looks for the first 0, and then returns the truncated string). Yes, it is intensive, but it may be the best way for you.

function show_number($number, $max = 8){ if(strpos($number, '.')){ $decimal = strpos($number, '.'); if(strpos($number, '.0')){ return substr($number, 0, $decimal);//returns whole if zero is first } else { if(strpos(substr($number, $decimal, $max), '0')){ $zero = strpos(substr($number, $decimal, $max), '0'); return substr($number, 0, $decimal+$zero);//returns number w/0 first zero } else { return substr($number, 0, $decimal+$max+1); //returns number with max places } } } else { return $number; //returns number if no decimals } }

### Answer：

```
rtrim(number_format($number, 2), '0.');
```

### Answer：

I use the following to get rid of trailing zeros:

```
// Trims a floating point number so there are no trailing zeros. For example:
// 1.00 -> 1
// 1.10 -> 1.1
function trimFloatingPoint($input) {
$strNum = strval($input);
while(substr($strNum, -1, 1) == '0')
$strNum = substr($strNum, 0, strlen($strNum) -1);
// Trailing zeros are gone. How about the trailing period?
if(substr($strNum, -1, 1) == '.')
$strNum = substr($strNum, 0, strlen($strNum) -1);
return $strNum;
}
```

### Answer：

```
$x = $x - floor($x)
```

will give you the right floating point…

Tags: phpphp