Question

I have a form with several radio buttons grouped by the same name, and those radio buttons are generated dinamically, there are 20 in total, but it will only be submitted 4 each time. Each radio button group as an ID as name of the group. When post the form to PHP (using jQuery Serialize) I get something like this:

1=3&2=6&4=9&7=2

I need to get the values of each parameter, in this case 1, 2, 4 and 7 and also to know which was the fields submitted (in this case the field 1, 2, 4 and 7 was submitted)

I did something like this, but not working:

for ($c = 1; $c <= 20; $c++){

if (isset($_GET[$c])){
    $question_id = $c;
    $answer_score = $_GET[$c];
    echo $answer_score;

    $gravar = "INSERT INTO iMood_ColabsQuestionAnswers (colab_id, answer_id, score) VALUES (?, ?, ?)";
    /* Set parameter values. */
    $valores = array($user, $question_id, $answer_score);

    echo $valores.'<br />';
    /* Prepare and execute the query. */
    $inserirResposta = sqlsrv_query( $conn, $gravar, $valores);
    sqlsrv_free_stmt($inserirRespota);
    sqlsrv_close($conn);
}
}

Can’t find a solution for this, because the above solution, doesn’t see any record and if use

$_GET['$c'];

It returns an error in SQL query, saying that found an unexpected (.

Answer 1

How are you submitting that serialized string from jquery?

Doing something like

$.ajax(function() {
   data: '1=3&2=6&4=9&7=2'
   ...
});

would lead to the problem you’re having. This would submit a complete string containing those “query” variables, but do it without an associated field name, so PHP will NOT pick up the fact that this string contains individual key/value pairs.

However, using

  data: { data: '1=3&2=6&4=9&7=2' }

will let things work in PHP properly, and you’d get at the data like this:

$query = parse_str($_GET['data']);

foreach($query as $question_id => $answer_score) {
   ... do database stuff ...
}