php is showing undefiened variable

[deepakNagpal]

hi
this is deepak, just beggner of learning php, facing some problem, if anyone could help me out, i will be thankful to him. when i run this code it will so me undefined variable as : calc , val1, and val2, which i have already declared in my html file.

my html code:
[HTML]
<html>
<head>
<title>Calculat ion form</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body>
<form method="post" ACTION="calcula te.php">
<P>Value 1: <INPUT TYPE="text" NAME="val1" SIZE=10></P>
<P>Value 2: <INPUT TYPE="text" NAME="val2" SIZE=10></P>
<P>Calculation: <br><br>

<INPUT TYPE="radio" NAME='calc' VALUE="add">add <br>
<INPUT TYPE="radio" NAME="calc" VALUE="subtract ">subtract< br>
<INPUT TYPE="radio" NAME="calc" VALUE="multiply ">multiply< br>
<INPUT TYPE="radio" NAME="calc" VALUE="divide"> divide</P>


<P><INPUT TYPE="submit" NAME="Submit" VALUE="Calulate "></P>
</form>


</body>
</html>
[/HTML]
my php code:

[PHP]
<?php

$val1 = $_POST['val1'], $val2 = $_POST['val2'], $calc= &_POST['calc'];

if(($val1 == "") || ($val2 == "") || ($calc == "")){
header("Locatio n: http://localhost/mySite/calculate_form. html");
exit;
}

if ($calc == "add"){
$result = $val1 + $val2;

} else if ($calc == "substruct" ){
$result = $val1 - $val2;

} else if ($calc == "multiply") {
$result = $val1 * $val2;

} else if ($calc == "divide"){
$result = $val1 / $val2;
}
?>

<html>
<head>
<title>Untitl ed Document</title>
</head>

<body>
<P> The result of the claculation is: <? echo "$result"; ?> </P>
</body>
</html>
[/PHP]

[ak1dnar]

There are some errors.Basicall y these are syntax errors.

In Html form: (read the lines carefully)
[HTML]<INPUT TYPE="radio" NAME="calc" VALUE="subtract ">[/HTML]

In Php Script:

[PHP]else if ($calc == "substruct" )[/PHP]

And here decalre the $_POST variables like this.
[CODE=php]$val1 = $_POST['val1'];
$val2 = $_POST['val2'];
$calc= $_POST['calc'];[/CODE]


Instead of this,
[CODE=php]$val1 = $_POST['val1'], $val2 = $_POST['val2'], $calc= &_POST['calc'];
[/CODE]

[deepakNagpal]

Thank very much ajaxrand, i have got the solution with your specified direction. now my script is working prperly.

thanks

Deepak Nagpal

[ak1dnar]

Thank very much ajaxrand, i have got the solution with your specified direction. now my script is working prperly.

thanks

Deepak Nagpal

Glad to hear that Deepak ! post back anytime when you have doubts.
-Thanks!
-Ajaxrand