Checkbox values into mysql query

Question

i have this code which permits me to retrieve data from a checkbox, there isn\'t any mysql included yet, so can you help me modify this?

The form is like this:

Answer 1

Use

foreach($_POST[checkbox] as $key => $value {
    echo PHP_EOL . "Key is => " . $key . " Value is => " . $value . PHP_EOL;
}

Try this and see the output, you'll see yourself how to proceed further.