Php format numbers to have commas

How to Format Numbers with Commas in PHP: A Comprehensive Guide

Learn how to format numbers with commas in PHP using number_format() function and regular expressions. Improve readability and create user-friendly interfaces.

• Using the number_format() function
• Regular expressions for number formatting
• Formatting Decimal Places in PHP
• Important points to consider
• Tips and tricks for formatting numbers
• Other quick code samples for formatting numbers with commas in PHP
• Conclusion
• How to format numbers with commas in PHP?
• How to put comma after 3 digits in PHP?
• How to format a number in PHP?
• How to remove comma in number_format in PHP?

As a developer, you might have come across a situation where you need to format numbers with commas in PHP. This is a common requirement in web application development, especially when dealing with large numbers or financial data. In this article, we will explore different methods to format numbers with commas in PHP.

Using the number_format() function

The easiest and most straightforward way to format numbers with commas in PHP is by using the number_format() function. This function can format a number with commas as thousands separators, round numbers, and add decimals if specified.

Here is an example code to format a number with commas and two decimal places:

$number = 1234567.89; $formatted_number = number_format($number, 2, '.', ','); echo $formatted_number; // Output: 1,234,567.89 

In the above code, the number_format() function takes three arguments: the number to be formatted, the number of decimal places, the decimal separator, and the thousands separator.

You can also prevent rounding by passing in two parameters to the function. The first one is the number to be formatted, and the second one is the number of decimal places you want to show.

$number = 1234567.89; $formatted_number = number_format($number, 0, '.', ','); echo $formatted_number; // Output: 1,234,567 

This code will format the number without any decimal places and rounding.

Regular expressions for number formatting

If you want more flexibility in formatting numbers, you can use regular expressions to achieve the same result. Here is an example code to format a number with commas using regular expressions:

$number = 1234567.89; $formatted_number = preg_replace("/(\d)(?=(\d)+(?!\d))/u", "$1,", $number); echo $formatted_number; // Output: 1,234,567.89 

In the above code, we used a regular expression to match every digit in the number that has two or more digits to its left. The preg_replace() function replaces every match with a comma-separated value.

This method may be more flexible than using number_format() , but it is also more complex.

Formatting Decimal Places in PHP

Important points to consider

When formatting numbers with commas in php, there are several important points to consider:

• The number_format() function can also add a floating-point dot as the decimal separator. You can change this by specifying your desired separator as the third parameter.
• The money_format() function is deprecated as of PHP 7.4.0 and should not be relied upon.
• The str_replace() function can be used to convert a comma-separated number to a decimal number. For example, str_replace(‘,’, ‘.’, $number) will replace all commas with dots in the given number.
• Laravel provides a function to convert a comma-separated number to a decimal number. You can use the floatval() function to convert the formatted string to a decimal number.
• JavaScript also has a method to format numbers with commas. You can use the toLocaleString() function to achieve this.
• Removing the comma in number_format() can be accomplished by passing an empty string as the fourth parameter.
• PHP recognizes the decimal point as “.” and not “,”. Be mindful of this when working with decimals.
• The number_format() function can format numbers with grouped thousands. For example, number_format($number, 2, ‘,’, ‘ ‘) will format the number with spaces as thousands separators and commas as decimal separators.

Tips and tricks for formatting numbers

Here are some tips and tricks for formatting numbers with commas in PHP:

• Best practices may include using number_format() for simplicity and readability.
• A cheatsheet for number formatting in php may be helpful for quick reference. You can find one on the PHP.net website.
• Common issues with number formatting in php may include rounding errors and incorrect decimal separators. Always test your code thoroughly before deploying it to production.
• Tips and tricks for formatting numbers may include using conditional statements to format based on specific criteria. For example, you may want to format numbers differently depending on their value or context.

Other quick code samples for formatting numbers with commas in PHP

In Php , for instance, number format comma php code example

In Php as proof, format money with commas in php

In Php as proof, number format without comma php

In Php , in particular, php number format comma and decimal

Conclusion

Formatting numbers with commas is a common requirement in web application development, especially when dealing with large numbers or financial data. In this article, we explored different methods to format numbers with commas in PHP, including using the number_format() function and regular expressions. We also discussed important points to consider and tips and tricks for formatting numbers. By following these guidelines, you can create user-friendly interfaces and improve readability in your PHP applications.

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number_format

Formats a number with grouped thousands and optionally decimal digits using the rounding half up rule.

Parameters

The number being formatted.

Sets the number of decimal digits. If 0 , the decimal_separator is omitted from the return value.

Sets the separator for the decimal point.

Sets the thousands separator.

Return Values

A formatted version of num .

Changelog

Version	Description
8.0.0	Prior to this version, number_format() accepted one, two, or four parameters (but not three).
7.2.0	number_format() was changed to not being able to return -0 , previously -0 could be returned for cases like where num would be -0.01 .

Examples

Example #1 number_format() Example

For instance, French notation usually use two decimals, comma (‘,’) as decimal separator, and space (‘ ‘) as thousand separator. The following example demonstrates various ways to format a number:

// english notation (default)
$english_format_number = number_format ( $number );
// 1,235

// French notation
$nombre_format_francais = number_format ( $number , 2 , ‘,’ , ‘ ‘ );
// 1 234,56

// english notation without thousands separator
$english_format_number = number_format ( $number , 2 , ‘.’ , » );
// 1234.57

See Also

• money_format() — Formats a number as a currency string
• sprintf() — Return a formatted string
• printf() — Output a formatted string
• sscanf() — Parses input from a string according to a format

User Contributed Notes 9 notes

It’s not explicitly documented; number_format also rounds:

$numbers = array( 0.001 , 0.002 , 0.003 , 0.004 , 0.005 , 0.006 , 0.007 , 0.008 , 0.009 );
foreach ( $numbers as $number )
print $number . «->» . number_format ( $number , 2 , ‘.’ , ‘,’ ). «
» ;
?>

0.001->0.00
0.002->0.00
0.003->0.00
0.004->0.00
0.005->0.01
0.006->0.01
0.007->0.01
0.008->0.01
0.009->0.01

Note: use NumberFormatter to convert in human-readable format instead user function from comments:
echo NumberFormatter :: create ( ‘en’ , NumberFormatter :: SPELLOUT )-> format ( 12309 ); // twelve thousand three hundred nine
echo NumberFormatter :: create ( ‘ru’ , NumberFormatter :: SPELLOUT )-> format ( 12307.5 ); // двенадцать тысяч триста семь целых пять десятых
?>

If you want to display a number ending with ,- (like 200,-) when there are no decimal characters and display the decimals when there are decimal characters i use:

function DisplayDouble($value)
list($whole, $decimals) = split (‘[.,]’, $value, 2);
if (intval($decimals) > 0)
return number_format($value,2,».»,»,»);
else
return number_format($value,0,».»,»,») .»,-«;
>

Outputs a human readable number.

# Output easy-to-read numbers
# by james at bandit.co.nz
function bd_nice_number ( $n ) // first strip any formatting;
$n = ( 0 + str_replace ( «,» , «» , $n ));

// is this a number?
if(! is_numeric ( $n )) return false ;

// now filter it;
if( $n > 1000000000000 ) return round (( $n / 1000000000000 ), 1 ). ‘ trillion’ ;
else if( $n > 1000000000 ) return round (( $n / 1000000000 ), 1 ). ‘ billion’ ;
else if( $n > 1000000 ) return round (( $n / 1000000 ), 1 ). ‘ million’ ;
else if( $n > 1000 ) return round (( $n / 1000 ), 1 ). ‘ thousand’ ;

return number_format ( $n );
>
?>

Outputs:

247,704,360 -> 247.7 million
866,965,260,000 -> 867 billion

For Zero fill — just use the sprintf() function

$pr_id = 1;
$pr_id = sprintf(«%03d», $pr_id);
echo $pr_id;

$pr_id = 10;
$pr_id = sprintf(«%03d», $pr_id);
echo $pr_id;

You can change %03d to %04d, etc.

I ran across an issue where I wanted to keep the entered precision of a real value, without arbitrarily rounding off what the user had submitted.

I figured it out with a quick explode on the number before formatting. I could then format either side of the decimal.

function number_format_unlimited_precision ( $number , $decimal = ‘.’ )
$broken_number = explode ( $decimal , $number );
return number_format ( $broken_number [ 0 ]). $decimal . $broken_number [ 1 ];
>
?>

formatting numbers may be more easy if u use number_format function.

I also wrote this :
function something($number)
$locale = localeconv();
return number_format($number,
$locale[‘frac_digits’],
$locale[‘decimal_point’],
$locale[‘thousands_sep’]);
>

My simpler solution to the problem of the decimal number in this function being longer than the specified number of decimals.

Standard result for number_format() is..
number_format(5.00098, 2) = 5.00

My function will return the result = 5.001

// ** Warning: Does not work with scientific notation. Conversion to a real number is required. **

echo auto_decimal_format ( 5.0005620 ); // print 5.0006
echo auto_decimal_format ( 5.0009820 ); // print 5.001
echo auto_decimal_format ( 5.00098 , 8 ); // print 5.00098000
echo auto_decimal_format ( 1.0295691366783E-5 , 2 ); // print 0.00

function auto_decimal_format ( $n , $def = 2 ) $a = explode ( «.» , $n );
if ( count ( $a )> 1 ) $b = str_split ( $a [ 1 ]);
$pos = 1 ;
foreach ( $b as $value ) if ( $value != 0 && $pos >= $def ) $c = number_format ( $n , $pos );
$c_len = strlen ( substr ( strrchr ( $c , «.» ), 1 ));
if ( $c_len > $def ) < return rtrim ( $c , 0 ); >
return $c ; // or break
>
$pos ++;
>
>
return number_format ( $n , $def );
>

To prevent the rounding that occurs when next digit after last significant decimal is 5 (mentioned by several people below):

function fnumber_format ( $number , $decimals = » , $sep1 = » , $sep2 = » )

if (( $number * pow ( 10 , $decimals + 1 ) % 10 ) == 5 ) //if next not significant digit is 5
$number -= pow ( 10 , -( $decimals + 1 ));

return number_format ( $number , $decimals , $sep1 , $sep2 );

$t = 7.15 ;
echo $t . » | » . number_format ( $t , 1 , ‘.’ , ‘,’ ) . » | » . fnumber_format ( $t , 1 , ‘.’ , ‘,’ ) . «\n\n» ;
//result is: 7.15 | 7.2 | 7.1

$t = 7.3215 ;
echo $t . » | » . number_format ( $t , 3 , ‘.’ , ‘,’ ) . » | » . fnumber_format ( $t , 3 , ‘.’ , ‘,’ ) . «\n\n» ;
//result is: 7.3215 | 7.322 | 7.321
> ?>

have fun!

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