PHP number_format() Function

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# PHP number_format() Function

PHP String Reference

## Example

Format numbers:

<?php
echo number_format("1000000")."<br>";
echo number_format("1000000",2)."<br>";
echo number_format("1000000",2,",",".");
?>
Run example »

## Definition and Usage

The number_format() function formats a number with grouped thousands.

Note: This function supports one, two, or four parameters (not three).

## Syntax

number_format(number,decimals,decimalpoint,separator)

Parameter | Description
--- | ---
number | Required. The number to be formatted. If no other parameters are set, the number will be formatted without decimals and with comma (,) as the thousands separator.
decimals | Optional. Specifies how many decimals. If this parameter is set, the number will be formatted with a dot (.) as decimal point
decimalpoint | Optional. Specifies what string to use for decimal point
separator | Optional. Specifies what string to use for thousands separator. Only the first character of separator is used. For example, "xxx" will give the same output as "x" Note: If this parameter is given, all other parameters are required as well

## Technical Details

Return Value: | Returns the formatted number
PHP Version: | 4+
Changelog: | As of PHP 5.4, this function supports multiple bytes in the parameters decimalpoint and separator. Only the first byte of each separator was used in older versions.

## More Examples

## Example 1

You want to return a price: One parameter will round the number (it will be formatted without decimals). Two parameters should give the result you want:

<?php
$num = 1999.9;
$formattedNum = number_format($num)."<br>";
echo $formattedNum;
$formattedNum = number_format($num, 2);
echo $formattedNum;
?>
Run example »

PHP String Reference

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