Convert string to float in PHP

Question

I have a string value like this "0.00050722" and I want to convert its data type to double/float.

I've been trying floatval() and doubleval() but it always returns me a value of 0.

I need to get the exact of amount of 0.00050722 in a float datatype.

This question has already been asked : stackoverflow.com/q/481466/785207 $float = (float) $value; — Sparkup
– Sparkup, Commented Mar 20, 2014 at 3:42
@Sparkup If floatval($value) isn't working for him, (float)$value probably won't either. — Barmar
– Barmar, Commented Mar 20, 2014 at 3:44
Probably :) I may have been a bit hasty in reading the details. — Sparkup
– Sparkup, Commented Mar 20, 2014 at 3:53
floatval($value); and $float = (float)$value; both are working. There must be some other problem in your code. Please ckeck carefully. — Rolen Koh
– Rolen Koh, Commented Mar 20, 2014 at 3:58

hoss · Accepted Answer · 2014-03-20 04:40:23Z

5

You just need to (typecast) to the desired type

    <?php
    $string = "0.00050722";
    $float = (float) $string;
    $float2 = $string + 0.0; //this works as well.
    $floatval = floatval($string);
    $double = (double) $string;

    // TEST
    printf("string:   %s - %d<br>", $string, is_float ($string));
    printf("float :   %g - %d<br>", $float, is_float ($float));
    printf("float2:   %g - %d<br>", $float2, is_float ($float2));
    printf("floatval: %g - %d<br>", $floatval, is_float($floatval));
    printf("double:   %g - %d<br>", $string, is_double ($double));

?>

Should result in:

string:   0.00050722 - 0
float :   0.00050722 - 1
float2:   0.00050722 - 1
floatval: 0.00050722 - 1
double:   0.00050722 - 1

Notice that concatenation also works.

edited Mar 20, 2014 at 4:40

answered Mar 20, 2014 at 4:32

hoss

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Comments

Dexter · Accepted Answer · 2014-03-20 04:33:35Z

1

it's work's for me try this

<?php
    $string = "0.00050722";
    $num = floatval($string);
    echo $num;   // output 0.00050722
?>

answered Mar 20, 2014 at 4:33

Dexter

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