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PHP Undefined index Error

Hi Im getting the following error: Notice: Undefined index: rout in /home/webs/cia/web/sovereign/functions.php on line 8. What could be the problem?

Thanks a lot

PHP Code:




<html> 
<form name="thingy" action="functions.php" method="post"> 
<input type="hidden" name="rout"> 
</form> 
</html> 
 
<?php 
$rout = $_POST['rout']; 
$filenames = array("index", 
                   "services", 
                   "products", 
                   "quotes",  
                   "contact",  
                   "home",  
                   "admin"); 
 
if (in_array($rout, $filenames)) 
{ 
include "$rout.php"; 
exit; 
} 
else 
{ 
include "index2.php"; 
} 
?>

I see no value assigned for the hidden field rout in the html form.
try

PHP Code:




if( !isset( $_POST["rout"] ) ) 
{ 
    echo "POST[rout] was not set"; 
    exit; 
}