If Checkbox Is Empty, Display Different Result

[Pope Pius X2]

I have a simple php form that is submitted and the details are emailed to someone. The problem is that there is a checkbox and if the checkbox is clicked then it sends the result as "Yes". However when it's not clicked I'd like the result to appear as "No" but I can't seem to do this. This is my code:

<?php    $radiobutton = $_REQUEST['radiobutton'] ;  $select = $_REQUEST['select'] ;  $textarea = $_REQUEST['textarea'] ;  $textfield = $_REQUEST['textfield'] ;  $textfield2 = $_REQUEST['textfield2'] ;  $textfield3 = $_REQUEST['textfield3'] ;  $textfield4 = $_REQUEST['textfield4'] ;  $checkbox = $_REQUEST['checkbox'] ;       
 // multiple recipients  
$to  = '[e-mail]' . ', '; // note the comma  $to .= '[e-mail]';    // subject  $subject = 'Feedback';    // if (empty($cip_req)) {  //    $cip_req = "No";  //    }    // message  $message = "<b>Type Of Comment : </b>" . $radiobutton . "<br /><b>Comment Subject : </b>" . $select . "<br /><b>Comments : </b>" . $textarea . "<br /><b>Name : </b>" . $textfield . "<br /><b>Email : </b>" . $textfield2 . "<br /><br /><b>Phone : </b>" . $textfield3 . "<br /><b>Fax : </b>" . $textfield3 . "<br /><br /><b>Please contact me as soon as possible : </b>" . $checkbox;    // To send HTML mail, the Content-type header must be set  $headers  = 'MIME-Version: 1.0' . "\r\n";  $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";    // Additional headers  $headers .= 'To: Me <[e-mail]>' . "\r\n";  $headers .= 'From: Website <[e-mail]>' . "\r\n";    if (($checkbox)) {      $checkbox = No;  }    // Mail it  mail($to, $subject, $message, $headers);  header("Location: index.php");  ?>

[Atli]

Hi Pope. Welcome to The Scripts!

If a checkbox is not checked, it will not be included in the HTTP request, which means that it will not exists in the $_POST, $_GET or $_REQUEST super-globals.

So to test if a checkbox has been checked, use the isset() function to see if it exists.

For example:

<?php
    if(isset($_POST['checked'])) {
        echo "<p>The box IS checked!</p>";
    }
    else {
        echo "<p>The box IS NOT checked!</p>";
    }
?>
<form action="?" method="POST">
    <input type="checkbox" name="checked" /><br />
    <input type="submit" />
</form>
 

[Pope Pius X2]

Hey, thank you very much! So for example, if I wanted, would it be possible to do something like this:

<?php
    if(!isset($_POST['checked'])) {
        $checked = "No";
    }
    else {
    }
?>
<form action="?" method="POST">
    <input type="checkbox" name="checked" /><br />
    <input type="submit" />
</form>

[Atli]

Hey, thank you very much! So for example, if I wanted, would it be possible to do something like this:

<?php
    if(!isset($_POST['checked'])) {
        $checked = "No";
    }
    else {
    }
?>
<form action="?" method="POST">
    <input type="checkbox" name="checked" /><br />
    <input type="submit" />
</form>

Sure that would work, tho you should remove the empty else block, unless you plan to use it?

This code, by itself, would no do much, but it will compile and run fine.