Validation for drop down menus

[smartic]

I'm having more than one drop down menu i want to secure them all from unvalid data ex:

[HTML]<select name="Category" size="5" id="Category">
<option>Compute rs &amp; Networking</option>
<option>Camer as &amp; Photo</option>
<option>Consume r Electronics</option>
<option>Jewel ry &amp; Watches</option>
<option>Real Estate</option>
</select>
<select name="anotheron e" size="5">
<option>Compute rs &amp; Networking</option>
<option>Camer as &amp; Photo</option>
<option>Consume r Electronics</option>
<option>Jewel ry &amp; Watches</option>
<option>Real Estate</option>
</select>[/HTML]

if i choose from one of these options give another select tag have many other options etc... , how can i secure them all by simple PHP code.

[MarkoKlacar]

Hi,

be a bit more specific, do you have an example of what you want to happend?
It maybe a webpage, imagage etc.

[ronverdonk]

I also fail to comprehend what your problem is. As I see it now is that, when a value from a dropdown box is selected, a new dropdown box is shown with content depending on the selected value of the first dd box, right?

Ronald

[smartic]

yes (ronverdonk) that's what i mean how can i secure all this lists from any different values.

[ronverdonk]

Best way to go about this is using plain JavaScript (when all values for all boxes are in the JS client code) or Ajax (a combination of JavaScript and PHP), used when all the values for the boxes is at the server.

In the first case you go to your JS routine when an item in a box is selected and generate - via the DOM - a new dropdown box, filled with values from within JS.

In the second, you go to a JS routine when an item in a box is selected, and pass that value to a PHP script at the server. The server script then fills a data stream with server values and sends it back to JS, who constructs a new dropdown box and fills it with the values received from the server script. See also this post in the forum.

Ronald

[smartic]

Thank you, but I'm using Ajax with PHP file that have XML header to populate the lists then when i choose from one of the lists populate another list etc from PHP file how can i read from the PHP file the XML tags and attributes within it using PHP Code to check for the values he choose.
EX: (PHP FILE THAT HAVE XML HEADER)

[HTML]
<?xml version=\"1.0\" encoding=\"utf-8\"?>
<Computers>
<Menu type='Apple, Macintosh Computers'>
<subMenu>Appl e Components</subMenu>
<subMenu>Appl e Desktops</subMenu>
<subMenu>Appl e Drives, Media</subMenu>
<subMenu>Appl e Input Devices</subMenu>
</Menu>
</Computers>
[/HTML]

i need to check i he choose menu for (apple category) check the sub menu values etc.

[robin1983]

ok i m posting the whole code to make clear bit a little lengthy ok

Hi,

be a bit more specific, do you have an example of what you want to happend?
It maybe a webpage, imagage etc.