[RESOLVED] initialize variables

[fiorelina21]

in the fllowing script how do i initialize the$n1 $n2 $n3 variables?
is this script correct???
thanks!!!🙂
could u give me any tips???
<?php
echo "<form name=\"mod\" method=\"post\" action=".$_SERVER['PHP_SELF'].">";
?>
<p>primo numero
<input name="n1" type="text">
</p>
<p>secondo numero
<input type="text" name="n2">
</p>
<p>terzo numero
<input type="text" name="n3">
</p>
<p>
<input type="submit" name="Submit" value="calcola maggiore e minore">
</p>
</form>
<?php
if (($n1>$n2) && ($n1>$n3))
{
$mag=$n1;
}
else
{
if (($n2>$n3) && ($n2>$n1))
{
$mag=$n2;
}
else
{
$mag=$n3;
}
}
echo "MAggiore: ".$mag;
?>

[bradgrafelman]

When posting PHP code, please use the board's [PHP][/PHP] bbcode tags - they make the code much, much easier to read (as well as aiding the diagnosis of syntax errors). You should edit your post now and add these bbcode tags to help others in reading/analyzing your code.

As to your problem, take a look at this manual page: [man]variables.external[/man].

[Joseph07]

Do remember to use

bbcode tags.

First you have to check whether the form is submitted.
Next, using your conditional statement based on what you have given.

if (isset($_POST['Submit'])) {
  // Assign the variables
  $n1 = $_POST['n1'];
  $n2 = $_POST['n2'];
  $n3 = $_POST['n3'];
  // Your conditional statement
  if (($n1>$n2) && ($n1>$n3)) {
        $mag = $n1;
  } elseif (($n2>$n3) && ($n2>$n1)) {
        $mag = $n2;
  } else {
        $mag = $n3;
  }
echo "MAggiore: ".$mag;
}
?>

More or less something like this.

[fiorelina21]

🙂 IT FINALY WORKS!!!!
THANKS