[RESOLVED] nothing happens on submit

[fiorelina21]

hi i have to write a simple code transforms a string from a text box into integer, float string, bool
i wrote the code but on submit it doesn't shoe anything

<?php
echo "INSERISCI LA VARIABILE DA TRASFORMARE";
echo "<form name=\"trasf\" method=\"post\" action=".$_SERVER['PHP_SELF'].">";
echo "<INPUT TYPE=\"text\" NAME=\"variabile\">";
echo "<br>";
echo "<INPUT TYPE=\"submit\" VALUE=\"invia\">";
?>
</form>
<?php
 if (isset($_POST['Submit'])) {
 $variabile=$_POST['variabile'];
if (isset($variabile))
{   $i=(int) $variabile;
    echo "Trasformata in integer vale:".$i;
   echo "<br>";                                  

    $f=(float) $variabile;
    echo "Trasformata in float vale:".$f ;
   echo "<BR>";
   $s=(string) $variabile;
   echo "Trasformata in string vale:".$s;
   echo "<br>";
  echo $b=(bool) $variabile; 
echo "Trasformata in boolean vale:    ".  (bool) $b;
   echo "<BR>";
 }
 }
 else { echo " non hai inserito alcun valore";  }
?>

cfould u pls help me figure out what's wrong with the script??
thanks

[NogDog]

There is no form element named "Submit" in your form, so that IF block is not executed. I would suggest just using the "variabile" field for your check, and then you only need one IF condition:

if (isset($_POST['variabile'])) {
   $variabile=$_POST['variabile'];
   $i=(int) $variabile;
// ...etc....