Question 40426 in PHP Question posted in
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How set float precision for 'echo' in php more 12 digits without number_format()?

PHP code:

$val1 = 32;
$val2 = 0.00012207031255;
$res = $val1 - $val2;
echo "echo: ".$res."n";
echo "json: ".json_encode($res)."n";
echo "form: ".number_format($res, 14);

Output:

echo: 31.999877929687
json: 31.99987792968745
form: 31.99987792968745

How to display 14 decimal places in echo without number_format()

I tried setting precision=14 in php.ini but nothing changed

Tags:

3

Answers


  1. 0

    If you want to add a Global solution for the whole project without changing each line of code you can set ini_set('precision', 14) in the bootstrap file or set the same value in php.ini.

    To format a single value you can use sprintf() function with 14 decimal characters format.

    Code :

    $val1 = 32;
$val2 = 0.00012207031255;
$res = $val1 - $val2;
echo sprintf("echo: %.14fn", $res);
echo "json: ".json_encode($res)."n";
echo "form: ".number_format($res, 14);

    Result :

    echo: 31.99987792968745
json: 31.99987792968745
form: 31.99987792968745
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  2. 0

    You can try to use mathematical php module functions:

    php > $a = 32;

php > $b = 0.00012207031255;

php > echo bcsub($a, $b, 14);
31.99987792968745

    More detail is here

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  3. 0

    You can use sprintf()

    $val1 = 32;
$val2 = 0.00012207031255;
$res = $val1 - $val2;
echo "echo: ".rtrim(sprintf("%.14f", $res), "0")."n";
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