php generated checkbox and drop down problem

[genista]

Hi all,

I have some checkboxes and drop downs generated by php, the problem I am having is that on the check boxes which look like this:

 echo "<p>The price for Service 1is: £$service1priceprice, type of rate: $haircolourtype Tick the box if you want to enquire on this service:<input type=\"checkbox\" name=\"haircolourselected\" value=\"true\"</p>";

When the page gets submitted however, the checkbox returns blank and of course as a result of this code setting up the post variables will enter a null value into the database instead of tru:

if (!isset($_POST['service1selected'])) {    

    $service1selected = 'null';    

}else{  

    $service1selected = $_POST['service1selected'];  

  }  

How can I set the checkbox to be set when clicked for form submission?

Thanks,

G

[devinemke]

unchecked checkboxes and unselected select boxes will not return anything to the form processor. thus you should use [man]isset[/man] to see if they were checked/selected and proceed accordingly.

[genista]

ok well here is the part that sets up the variables for the post array, if this isn't right then I guess I have another problem:

   if(isset($_POST['submit']))   

{ 
 $_POST['username'] = $row ["username"];
 $_POST['supplierid'] = $id;
if (!isset($_POST['service1selected'])) {    

    $service1selected = 'null';    

}else{  

    $service1selected = $_POST['service1selected'];  

  }  

At the moment null is being entered into my query.

Hope this helps,

G