number_format – PHP String Functions

Syntax :

Description :

number_format() function helps in formating a number (Floating number) with grouped thousands.

Parameter :

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Name, Required /Optional, Value Type, Description

number, Required, Float , It is the input number.

decimals, Optional, Integer , It specifies the number for the decimal point.

decimal_point, Optional, String , It specifies the separator for decimal point.

thousands_sep, Optional, String , It specifies the separator for thousands.

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Output :

It returns the formatted number.

ChangeLog :

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Version, Description
PHP 7.2.0, number_format() has been changed not to return -0. However in earlier version -0 could be returned for cases like where number would be -0.05.
PHP 5.4.0 , It supports multiple bytes in dec_point and thousands_sep now. Only the first byte of each separator was used in older versions..
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number_format() – PHP Functions Example 1 :

<?php
$number=999999;
echo number_format($number).'<br>';
echo number_format($number, 2).'<br>';
echo number_format($number, 3).'<br>';
echo number_format($number, 2, ',', '.');
?>

Output of above code in the browser is as below:

number_format() – PHP Functions Example 2 :

<?php
$number=999999.99;
echo number_format($number).'<br>'; //One parameter will round the number. 
echo number_format($number, 2).'<br>';
echo number_format($number, 3).'<br>';
echo number_format($number, 2, ',', '.').'<br>';
echo number_format($number, 2, ',', 'x').'<br>';
?>

Output of above code in the browser is as below: