How to simplify the use of str_replace

Question

As I explained in this question, I’m using the maskMoney to generate a coin mask in multiple fields input of type="text", only when I perform arithmetic operations with the values obtained, and then use the number_format in output, it gives various types of problem in formatting (does not include comma, etc).

The solution I found on that topic was the following:

$ultsalbase = $_POST["Tultsal"]; 

$ultsalbase2 = str_replace('.', '', $ultsalbase); 
$ultsalbase3 = str_replace(',', '.', $ultsalbase2);

Thus, when the value enters the form in the format 1.000,00, the str_replacetransforms it to 1000.00. Then after making the calculations, the number_format returns currency values correctly (1,000.00).

What happens is that since there are many fields, I think it might be wrong to have to create two new variables for each field, just to be able to change the formatting.

There is no simpler solution to this?

I tried that:

$ultsalbase = $_POST["Tultsal"] . str_replace('.', '', $ultsalbase) . str_replace(',', '.', $ultsalbase); 

But it didn’t work. Any idea?

Answer 1

Create a function to apply to all necessary items from $_POST, for example:

function formatFromMaskMoney($value) {
    $value = str_replace(' ', '', $value);
    $value = str_replace('.', '', $value);
    $value = str_replace(',', '.', $value);
    return (double) $value;
}

$_POST["variavel-1"] = formatFromMaskMoney($_POST["variavel-1"]);
$_POST["variavel-2"] = formatFromMaskMoney($_POST["variavel-2"]);
$_POST["variavel-3"] = formatFromMaskMoney($_POST["variavel-3"]);
$_POST["variavel-4"] = formatFromMaskMoney($_POST["variavel-4"]);

//exemplo:
echo number_format(formatFromMaskMoney('4.233.456.700, 99') / formatFromMaskMoney('1.000.000,00'), 2, ",", ".");

Or if you want to make it easier you can apply one array and use array_map, just as:

function formatFromMaskMoney($key) {
    if (isset($key) && isset($_POST[$key])) {
        $_POST[$key] = str_replace(' ', '', $_POST[$key]);
        $_POST[$key] = str_replace('.', '', $_POST[$key]);
        $_POST[$key] = (double) str_replace(',', '.', $_POST[$key]);
    }

    return $key;
}

$posts = array('variavel-1', 'variavel-2', 'variavel-3', 'variavel-4');
array_map('formatFromMaskMoney', $posts);

echo number_format($_POST['variavel-1'] / $_POST['variavel-2'], 2, ",", ".");

And you can also make the function check if the field is a value of money and apply the str_replace:

function formatFromMaskMoney($value) {
    if (preg_match('/^[0-9.]+[,]( |)\d{2}$/', $value) !== 0) {
        $value = str_replace(' ', '', $value);
        $value = str_replace('.', '', $value);
        $value = (double) str_replace(',', '.', $value);
    }

    return $value;
}

$_POST = array_map('formatFromMaskMoney', $_POST);
print_r($_POST);//Para verificar os dados antes de usa-los.

echo number_format($_POST['variavel-1'] / $_POST['variavel-2'], 2, ",", ".");

Online example on ideone: https://ideone.com/HScQXG