Posted by Erwin Moller on 04/06/07 14:08

Jerim79 wrote:

> My situation is that I have a form that asks the user for a number.
> Next, I execute a while loop that displays a group of questions the
> amount of times the customer entered. For instance, the loop looks
> this:
>
> while ($Number!=0){
> <input type="radio" name="Age[]" value="20-30">20-30
> <input type="radio name="Age[]" value="30-40">30-40
> <input type="radio name"Age[]" value="40-50">40-50
> $Number--;
> }
>
> Let's say someone entered 3 for $Number. When the loop executes it
> will produce:
>
> echo" <input type=\"radio\" name=\"Age[]\" value=\"20-30\">20-30
> <input type=\"radio\" name=\"Age[]\" value=\"30-40\">30-40
> <input type=\"radio\" name=\"Age[]\" value=\"40-50\">40-50";
>
> echo" <input type=\"radio\" name=\"Age[]\" value=\"20-30\">20-30
> <input type=\"radio\" name=\"Age[]\" value=\"30-40\">30-40
> <input type=\"radio\" name=\"Age[]\" value=\"40-50\">40-50";
>
> echo" <input type=\"radio\" name=\"Age[]\" value=\"20-30\">20-30
> <input type=\"radio\" name=\"Age[]\" value=\"30-40\">30-40
> <input type=\"radio\" name=\"Age[]\" value=\"40-50\">40-50";
>
> The problem is that with radio buttons, you can only choose one
> option. With this code, it only allows the user to choose one option
> from among the 9 listed, instead of one from each set. I am trying to
> find a way to dynamically name each set. If I use checkboxes, then it
> records the information correctly and correctly writes it to the
> database. However, checkboxes don't look good for this application in
> my opinion, and there is no way for me to keep someone from checking
> more than one box, that I know of. Here is the PHP code I am using to
> catch the user's input and write it to a database:
>
> $Age = $_POST['Age'];
>
> for ($i=0; $i < $Number; $i++) {
> $query="INSERT INTO table VALUES('$Age[$i])";
> $result = mysql_query($query) or die('Query failed: ' .
> mysql_error());
> }
>
> Like I say, that works fine if I use checkboxes, without changing the
> HTML name="Age[]". I am looking for a way to define "sets" of radio
> buttons with the same name, so that only one from within a set can be
> chosen at a time. Is there something such as:
>
> echo "<group name="1">
> <input type=\"radio\" name=\"Age[]\" value=\"20-30\">20-30
> <input type=\"radio\" name=\"Age[]\" value=\"30-40\">30-40
> <input type=\"radio\" name=\"Age[]\" value=\"40-50\">40-50
> </group>";
>
> echo "<group name=\"2\">
> <input type=\"radio\" name=\"Age[]\" value=\"20-30\">20-30
> <input type=\"radio\" name=\"Age[]\" value=\"30-40\">30-40
> <input type=\"radio\" name=\"Age[]\" value=\"40-50\">40-50
> </group>";
>
> echo "<group name=\"3\">
> <input type=\"radio\" name=\"Age[]\" value=\"20-30\">20-30
> <input type=\"radio\" name=\"Age[]\" value=\"30-40\">30-40
> <input type=\"radio\" name=\"Age[]\" value=\"40-50\">40-50
> </group>";
>
> This may be more of a HTML question, but I am open to any solution
> that would help. Any way to use PHP to accomplish my goal? Even if
> there is a way to dynamically name each set such as:
>
> echo "while ($Number!=0){
> <input type=\"radio\" name=\"Age$Number[]\" value=\"20-30"\>20-30
> <input type=\"radio\" name=\"Age$Number[]\" value=\"30-40\">30-40
> <input type=\"radio\" name=\"Age$Number[]\" value=\"40-50\">40-50
> $Number--
> } ";
>
> I would just have to create a loop to run through each array when
> writing to the database, but that shouldn't be a problem.

Hi,

You cannot make a group of the radiobuttons since you named them all Age[]
and that IS the group as far as HTML is concerned.
So just code it in such a way they have different names, like this:

<?php
// receive number
$number = (int)$_POST["number"];
?>
<input type="hidden" name="numberOfAges" value="<?php echo $number; ?>">
<?php
for ($count=0;$count<$number;$count++){
?>
<input type="radio" name="Age<?php echo $number; ?>[]"
value="20-30">20-30
<input type="radio name="Age[]<?php echo $number; ?>"
value="30-40">30-40
<input type="radio name"Age[]<?php echo $number; ?>"
value="40-50">40-50
<?php
}
?>


Now them radiogroups have names like Age0[] and Age1[]

And in the receiving script:
$numberOfAges = $_POST["numberOfAges"];
for ($count=0;$count<$numberOfAges;$count++){
$name = "Age".$count;
$theSelectedValue = $_POST[$name];
// Do whatever you want with $theSelectedValue
}


Not tested, but I hope you get my drift. :-)

Regards,
Erwin Moller

[Back to original message]