How to loop through an array of inputs in a form?

Question

I am trying to look through some input fields in a form and add them to a database. The user sets the number of fields, so I can\'t do something like the code below because

Answer 1

Given:

etc...

in your form, you'd loop over them with

foreach($_POST['foo'] as $index => $value) {
    ...
}

The [] in the field name will be stripped off by PHP and used as a hint that it should expect multiple values with the same name, causing it to create a sub-array inside $_GET/$_POST to accomodate those extra values.

You can also suggest which array keys PHP should use, e.g.

echo $_POST['foo'][1]; // outputs "hi there"
echo $_POST['foo']['abc'] // outputs "TGIF!"

Multi-dimensional arrays are also supported, using the same notation/access methods.