What is the exact equivalent of JS: something.toFixed() in PHP?

Question

If I have a.toFixed(3); in javascript ('a' being equal to 2.4232) what is the exact equivalent command in php to retrieve that? I searched for it but found no proper explanation appended to the answers.

I think PHPs `round()` is going to be as close as you get out of the box...http://php.net/round — DrCord, Dec 18 '13 at 22:51

score 44 · Answer 1 · edited May 12 '19 at 03:18

44

The exact equivalent command in PHP is function number_format:

number_format($a, 3, '.', ""); // 2.423

it rounds the number to the third decimal place
it fills with '0' characters if needed to always have three decimal digits

Here is a practical function:

function toFixed($number, $decimals) {
  return number_format($number, $decimals, '.', "");
}

toFixed($a, 3); // 2.423

edited May 12 '19 at 03:18

Case

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answered Aug 27 '14 at 16:33

cassiodoroVicinetti

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Note: `number_format` returns string not float or int which could make some errors in some cases. – Sameh Ashraf Jun 14 '23 at 10:25

score 26 · Answer 2 · edited Dec 05 '18 at 17:27

26

Have you tried this:

round(2.4232, 2);

This would give you an answer of 2.42.

More information can be found here: http://php.net/manual/en/function.round.php

edited Dec 05 '18 at 17:27

E_net4

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answered Dec 18 '13 at 22:53

Shafiq Jetha

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In case of using it for round(2.4255, 2) it would return 2.43 – Dănuț Mihai Florian Jan 04 '14 at 00:12
@DănuțMihaiFlorian It depends on what you've set as `mode` http://php.net/manual/en/function.round.php#refsect1-function.round-parameters – yckart Aug 02 '16 at 12:28
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In case of 64.000000, it returns 64. I would like to get 64.00 – zookastos Dec 13 '16 at 21:26
1

@NalinAgrawal: You may have to cast it to a double to get that, though it seems that you might be wanting that for displaying on a page, in which case there are string formatters that will maintain certain decimal precision, though that's more string-related than numerical-related. – Shafiq Jetha Jan 16 '17 at 16:39

score 11 · Accepted Answer · edited May 04 '16 at 16:56

11

I found that sprintf and number_format both round the number, so i used this:

$number = 2.4232;
$decimals = 3;
$expo = pow(10,$decimals);
$number = intval($number*$expo)/$expo; //  = 2423/100

edited May 04 '16 at 16:56

Stephan Stanisic

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answered Jan 04 '14 at 00:22

Dănuț Mihai Florian

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Jon · Answer 4 · 2013-12-18T23:00:49.993

4

A direct equivalent is sprintf('%.03F', $a). This will format the value in question as a number with 3 decimal digits. It will also round if required.

edited Dec 18 '13 at 23:00

answered Dec 18 '13 at 22:55

Jon

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tested. does not round. – MonOve Apr 08 '14 at 14:18

score 2 · Answer 5 · answered Mar 27 '19 at 19:34

2

The straight forward solution is to use in php is number_format()

number_format(2.4232, 3);

answered Mar 27 '19 at 19:34

Afia

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How is this different from @cassiodoroVicinetti's answer from Aug 28 '14 at 19:15 (4 1/2 **years** ago)? – Stephen P Mar 27 '19 at 19:55
1

this one is straight forward – rtpHarry Jun 09 '20 at 21:36

score 1 · Answer 6 · answered Dec 18 '13 at 22:51

1

In PHP you can use a function called round.

answered Dec 18 '13 at 22:51

Aurelio De Rosa

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score 1 · Answer 7 · answered Sep 22 '15 at 18:07

Here is the translation:

function toFixed($number, $dec_length){
    $pos=strpos($number.'', ".");
    if($pos>0){
        $int_str=substr($number,0,$pos);
        $dec_str=substr($number, $pos+1);
        if(strlen($dec_str)>$dec_length){
            return $int_str.($dec_length>0?'.':'').substr($dec_str, 0,$dec_length);
        }else{
            return $number;
        }
    }else{
        return $number;
    }
}


//toFixed(1234.678, 0) = 1234
//toFixed(1234.678, 1) = 1234.6
//toFixed(1234.678, 2) = 1234.67
//toFixed(1234.678, 4) = 1234.678

score 0 · Answer 8 · answered Apr 08 '22 at 07:38

0

how about this

    function to_fixed($number, $decimals) {
        return floatval(number_format($number, $decimals, '.', ""));
    }

call it like this

to_fixed(2.4232, 3); //  2.423

answered Apr 08 '22 at 07:38

user889030

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What is the exact equivalent of JS: something.toFixed() in PHP?

8 Answers8

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