PHP float with 2 decimal places: .00

When I do this typecasting:

(float) '0.00';

I get 0. How do I get 0.00 and still have the data type as a float?

A float doesn't have 0 or 0.00 : those are different string representations of the internal (IEEE754) binary format but the float is the same.

If you want to express your float as "0.00", you need to format it in a string, using number_format :

$numberAsString = number_format($numberAsFloat, 2);

As far as i know there is no solution for PHP to fix this. All other (above and below) answers given in this thread are nonsense.

The number_format function returns a string as result as written in PHP.net's own specification.

Functions like floatval/doubleval do return integers if you give as value 3.00 .

If you do typejuggling then you will get an integer as result.

If you use round() then you will get an integer as result.

The only possible solution that i can think of is using your database for type conversion to float. MySQL for example:

SELECT CAST('3.00' AS DECIMAL) AS realFloatValue;

Execute this using an abstraction layer which returns floats instead of strings and there you go.

JSON output modification

If you are looking for a solution to fix your JSON output to hold 2 decimals then you can probably use post-formatting like in the code below:

// PHP AJAX Controller

// some code here

// transform to json and then convert string to float with 2 decimals
$output = array('x' => 'y', 'price' => '0.00');
$json = json_encode($output);
$json = str_replace('"price":"'.$output['price'].'"', '"price":'.$output['price'].'', $json);

// output to browser / client
print $json;
exit();

Returns to client/browser:

{"x":"y","price":0.00}

0.00 is actually 0. If you need to have the 0.00 when you echo, simply use number_format this way:

number_format($number, 2);

You can show float numbers

• with a certain number of decimals
• with a certain format (localised)

i.e.

$myNonFormatedFloat = 5678.9

$myGermanNumber = number_format($myNonFormatedFloat, 2, ',', '.'); // -> 5.678,90

$myAngloSaxonianNumber = number_format($myNonFormatedFloat, 2, '.', ','); // -> 5,678.90 

Note that, the

1st argument is the float number you would like to format

2nd argument is the number of decimals

3rd argument is the character used to visually separate the decimals

4th argument is the character used to visually separate thousands

Use the number_format() function to change how a number is displayed. It will return a string, the type of the original variable is unaffected.

you can try this,it will work for you

number_format(0.00, 2)

try this

$nom="5695.5";
number_format((float)($nom), 2, '.', ','); // -> 5,695.50

$nom="5695.5215";
number_format((float)($nom), 2, '.', ','); // -> 5,695.52

$nom="5695.12";
number_format((float)($nom), 0, '.', ','); // -> 5,695

A number of comments on this page have missed the fundamental point that the question is ill-formed. Floating point is a binary representation, designed for efficient calculations; it fundamentally has no notion of decimal digits of any sort.

So asking this:

> How do I get "0.00" instead of "0" and still have the data type as a float?

Is like asking this:

> How do I get "deux" instead of "zwei" and still have the language as English?

Whether you specify the input as "2", or "2.0", or "2.000000000", if you ask for a floating point value, what will be stored in memory is this (in IEEE 754 double-precision):

> 0100000000000000000000000000000000000000000000000000000000000000

If you convert to an integer, the value stored in memory is this (assuming a 64-bit system):

> 0000000000000000000000000000000000000000000000000000000000000010

(Note that "integer" in this context is not just a synonym for "whole number", it is a specific data type, with its own rules for how values should be represented in memory.)

By contrast, the string "2" would look like this:

> 00110010

And the string "2.00" would look like this:

> 00110010001011100011000000110000

(In a PHP program, there would actually be additional information in memory, such as an indicator of the type, but that's not really relevant here.)

---

So, the question can only be answered by rephrasing it as a conversion: given the input of a floating point number, how do I choose a string representation which has a fixed number of decimals.

As others have pointed out, the answer to that is to use number_format.

---

The question doesn't mention JSON, but several comments do, so I will also point out that PHP's json_encode function has an option JSON_PRESERVE_ZERO_FRACTION, which will format a floating point number that happens to be a whole number with a trailing ".0", for instance:

$example = ['int' => 2, 'float' => 2.0];
echo json_encode($example);
# => {"int":2,"float":2}
echo json_encode($example, JSON_PRESERVE_ZERO_FRACTION);
# => {"int":2,"float":2.0}

Again, note that this is a string representation of the value.

You can use floatval()

floatval()

You can use round function

round("10.221",2);

Will return 10.22

try this

$result = number_format($FloatNumber, 2);

When we format any float value, that means we are changing its data type to string. So when we apply the formatting on any amount/float value then it will set with all possible notations like dot, comma, etc. For example

(float)0.00 => (string)'0.00',
(float)10000.56 => (string) '10,000.56'
(float)5000000.20=> (string) '5,000,000.20'

So, logically it's not possible to keep the float datatype after formatting.

You can use this simple function. number_format ()

    $num = 2214.56;
    
    // default english notation
    $english_format = number_format($num);
    // 2,215
    
    // French notation
    $format_francais = number_format($num, 2, ',', ' ');
    // 2 214,56
    
    $num1 = 2234.5688;
    
   // English notation with thousands separator
    $english_format_number = number_format($num1,2);
    // 2,234.57

    // english notation without thousands separator
    $english_format_number2 = number_format($num1, 2, '.', '');
    // 2234.57