session array for saving value of radion buttons

[jamhussain]

<form method="post" action="point.php">
<table bgcolor="#FFCC00" width="40" border="2" cellspacing="10">
<tr><td colspan="20"><input type="radio" name="type" value="1000" />1000 point </tr>
<tr><td colspan="20"><input type="radio" name="type" value="500" />500 point </tr>
<tr><td colspan="2" align="center"><input type="submit" name="submit" id="submit" />
</table>
</form>

<?php

session_start();
if (isset($_POST['Submit'])) {
$_SESSION['a'][0] = $_POST['type'];
if($_SESSION['a'][0]== 1000)
{ $b==1000;}
else
{ $b==500;}
echo"the no is ".$b;

}


?>
please check it that it is right. I want to save the value of radio button in a variable so that I may use it in further calculation.

[ScottyBoy]

Last I checked, session_start() needs to be called before anything is output, or you'll have errors. Basically you should be doing script work before putting any text or HTML on the page. This takes a little getting used to when coming from HTML coding, which has no separation of logic and display.

<?php
session_start();

// For all the variables you're using, not just one. This will help keep errors down.
if (isset($_POST['submit'], $_POST['type']))
{
    $type = $_POST['type'];
    $_SESSION['a'][0] = (int)$type;
    
    if($_SESSION['a'][0] == 1000)
        $b = 1000;
    else
        $b = 500;
?>

<form method="post" action="point.php">
    <table bgcolor="#FFCC00" width="40" border="2" cellspacing="10">
        <tr><td colspan="20"><input type="radio" name="type" value="1000" />1000 point </tr>
        <tr><td colspan="20"><input type="radio" name="type" value="500" />500 point </tr>
        <tr><td colspan="2" align="center"><input type="submit" name="submit" id="submit" />
    </table>
</form>

<?php
echo 'The number is ', $b;
?>

[holyhttp]

Error: if (isset($_POST['Submit'])) { }
PHP is case sensitive. You do not have a field named 'Submit' but rather 'submit'

session_start();

if (isset($_POST['submit'])) {
$_SESSION['a'][0] = $_POST['type'];

$b=($_SESSION['a'][0]=='1000')?1000:500;

echo"the no is ".$b;

}

[ScottyBoy]

What he said. And you should also check all the post variables you're using, not just one.

[jamhussain]

please guide me . what is meaning of ?1000 : 500
if user clicks on radio button of value 1000 then value will be stored in variable b. if user clicks the radio button of value 500 then it will be stored in the same variable.

[Kor]

please guide me . what is meaning of ?1000 : 500
if user clicks on radio button of value 1000 then value will be stored in variable b. if user clicks the radio button of value 500 then it will be stored in the same variable.

That is a ternary operator. It is the short notation of an if/else statement

$b=($_SESSION['a'][0]=='1000')?1000:500; 

can be unfolded as:

if($_SESSION['a'][0]=='1000'){
$b=1000;
}
else{
$b=500;
} 

[jamhussain]

If I use radio buttons
two for physical coditions typical optimal


two for point min max.
and form is same.
now this code is for one condition.
now the values , we get are two ,and form is one.
what should we do.
thanks.