Small code help

[Php_Ghost]

 

I need a small help over this code.  I am getting $ID variable not defined. So i dont what code should I used to prevent this error.  If id variable not exist then it should go to sorry. it is going but also showing that msg.  Any idea how to fix that.

 

<?php


$ID = $_GET['ID'];

if ($ID)                //if ID has some value then it should on screen. 

echo $ID;

else

echo "Sorry"

?>

[-Karl-]

<?php


$ID = $_GET['ID'];

if (!empty($ID)) {               //if ID has some value then it should on screen. 

echo $ID;

} else {

echo "Sorry"
}
?>

[Php_Ghost]

Thank You Brother Karl.  i will keep in mind next time.

[kenrbnsn]

Be careful when using the empty function. It will return a false positive if the value of the variable that you're testing is 0 (zero).

 

Ken

[ignace]

$ID = array_key_exists('ID', $_GET) ? intval($_GET['ID']) : -1;

if (1 > $ID) {//invalid