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PHP number_format() Function

PHP number_format() function is used to format a number with grouped thousands. This function returns the formatted number on success and in the case of failure it gives E_WARNING. This function accepts one, two, or four parameters but not three.

Syntax:-

number_format($number,$decimals,$decimalpoint,$separator);

Parameter Values

Parameter	Description
number	This is a required parameter. This parameter contains the number to be formatted. If no other parameters are set, the number will be formatted without decimals and with comma (,) as default.
decimals	This is an optional parameter. This parameter defines how many decimals. The given input number will be formatted with a dot (.) as decimal point.
decimalpoint	This is an optional parameter. This parameter defines what string to use for decimal point.
separator	This is an optional parameter. This parameter defines what string to use for thousands separator.

Here is an example of number_format() function in PHP:

<html>
<body>

<?php
$num = 100000;
echo number_format($num)."<br>";
echo number_format($num,2)."<br>";
echo number_format($num,2,",",".");
?>

</body>
</html>

Output:
100,000
100,000.00
100.000,00

Here is another example of number_format() function in PHP:

<html>
<body>

<?php
$num = 9999.9;
echo number_format($num)."<br>";
echo number_format($num,2)."<br>";
?>

</body>
</html>

Output:
10,000
9,999.90

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