如何使用PHP验证多个输入

Question

I am using the following code to validate integer input fields in my form:

if (isset($_POST['MaxiVegXP']) && ctype_digit($_POST['MaxiVegXP']))
{
    $MaxiVegXP = $_POST['MaxiVegXP'];
} else {
    $MaxiVegXP = FALSE;
}

I have another 20 or so similar form input fields. Is there a quicker way of doing this with a PHP loop? I'd rather not do the above for another 20 input fields :-)

Answer 1

You could iterate over all fields for example:

foreach ($_POST as $key=>$value){
    if (isset($_POST[$key]) && ctype_digit($_POST[$key])) {
        $$key = $value;
    } else {
        $$key = FALSE;
    }
}

But I would instead put the code in a function and call the fuction excplicitly for every post variable:

function isDigit($value) {
    if (isset($value) && ctype_digit($value)) {
        return true;
    }
    return false;
}

$MaxiVegXP = isDigit($_POST["MaxiVegXP"]) ? $_POST["MaxiVegXP"] : false;