Performing an action upon GET autochange dropdown

[dc_jt]

Hi Ive got the following drop down menu and I want to perform an action every time someone uses the dropdown. How Can I determine when it has been used? Normally I would pass in a mode but because its GET, I cant and if i change it to POST, it doesnt work how I want it to?

 

Thanks

 

<select name="iCat_Id" onchange="CatChange.submit()">
<option value="0">-- All Offers --</option>

<?php 
	//Get categories for this site
$rCategories = $oTblCategories->GetCategories();

while ($oCategories = mysql_fetch_object($rCategories))
	{?>
<option value="<?=$oCategories->category_id?>"<?=($iCatId == $oCategories->category_id)?' selected="selected"':''?>>
<?=$oCategories->category ?></option>

   <?php } ?>	
</select>
</form>

[dc_jt]

Anyone know?

 

Im just looking for something like if($_GET['sMode'] == 'something') {

      //Do something here

 

}

 

But need to know what the if statement is for an onchange function??

 

Thanks

[Barand]

the "if" statement is the same as if the form were submitted using a submit button. All PHP gets is submitted data.

 

As the name of the drop-down is "iCat_Id" then

 

<?php
if($_GET['iCat_Id'] == 'something') {
       //Do something here

}
?>

[dc_jt]

Thanks for the reply, I already know that. My drop down works fine but its when I change pages I wanted to set the start to 0 when the category is changed. I have done it now however by passing in a hidden mode and then doing if($_GET['mode'] == changeFilter) {

$iStart = 0;

}

 

Thanks anyway for your help

[Barand]

Ah!. Sorry. I understand what you were trying to do now