How can i validate a select option data?

[Mary Meer]

I have select option $titles=array('select ','Mr','Miss','Mrs');

if(isset($_POST[$v[1]] )){
        $initvalue=$_POST[$v[1]];
            }else{$initvalue='';}
echo '<td><select name ="titl">'."\n";
    foreach($titl as $value){
echo '<option value="'.$initvalue .'">' . $value .'</option>'."\n";}
 if(!isset($_POST['titl'])){
   $errormsg.='please select your title.';}
echo'</select></td>'."\n";

the default value is (select)if i dont change the title from select into Mr or Mrs and click on submit button i get the default value which is Select then i should have error message but it does not occur. Can anyone help?

[code green]

if(!isset($_POST['titl'])){ 

But your select box IS set.
Do you mean to test

if($_POST['titl'] == 'Select'){ 

[Mary meer]

yea but if it is not set eg. i have the defualt value which is (please select title) then still i am not having the error message.

[code green]

yea but if it is not set

It is set - ALWAYS, if the form has been submitted. As stated in my previous post, you are making the wrong test