PHP计算html表单中的POST元素

Question

I have a html form which I am sending to a php form. I am able to set everything to a variable just fine except for one field which can have 1-20 elemnts in it. the name of what I am trying to POST is cred_x_name The problem is the user can put in 1 element or 20, and I am not sure how many are put in. I know I have to use the count function, but don't know how to use it. So far I have

$j=  count($cred_req_name);
for ($i=0; $i<$j;$j++)
{
echo "test";
}

Not sure if this is the right approach. Any help would be appreciated. Thanks, Ravi

Answer 1

Having taken a look at your link, I think I would do something like the following:

$credentials = array();

for ($i = 1; $i <= 20; $i++)
{
    if (isset($_POST['cred_'.$i.'_name']) && !empty($_POST['cred_'.$i.'_name'])
    {
        $credentials[] = array(
            'name' => $_POST['cred_'.$i.'_name'],
            'city' => $_POST['cred_'.$i.'_city'],
            //  etc
        )
    }
}

Then what you have is a full array of all the credentials entered by the user, and empty lines will be ignored. For instances if only 3 credentials were entered, then your array $credentials will be 3 elements long. You can then use this array to process what you want, such as entering credentials in a database. This time, you will use foreach to parse the array you just created.

Beware of capitalization too: 'cred_'.$i.'_name' is not the same thing as 'Cred_'.$i.'_name' . Turn all your "name" attributes into "cred_x_foo" (instead of "Cred_x_foo") otherwise things won't work as expected.

Anyway, don't forget to sanitize your inputs cause they don't seem to be as of now.

Hope it helps.