Checkbox problem in PHP

Hi All,

I have a checkbox in HTML page.

<input type="checkbox" name="searchMe">

Code (markup):

When I submit the form and retrieve the value in PHP

$strSearchMe = $_REQUEST['searchMe'];

Code (markup):

If the checkbox is checked then its working fine but If it's not checked then I am getting an error

Notice: Undefined index: searchMe in C:\Inetpub\wwwroot\jobhob\registeremployers.php on line 28

I dont understand why this error is coming. I would appreciate any help in this regard. Thanks in advance!

Best Regards,
Inderpal Singh

 

I think it's because the array element 'searchMe' is not set if the checkbox is not selected. Use the isset() function to see if it has been set, like this:

if (isset($_REQUEST['searchMe'])) {
    $strSearchMe = $_REQUEST['searchMe'];
} else {
    $strSearchMe = false;
}

PHP:

Cheers, Cryo.

 

Cryogenius is correct: it's part of the HTML spec that checkbox values are not sent if they are not checked. It's not a problem with PHP as such, it's a 'problem' with the HTML spec.

 

Thanks for the confirmation TwistMyArm... I wasn't 100% sure.

Cryo.

 

You can also omit warning by using @:

$strSearchMe = @$_REQUEST['searchMe'];

PHP:

If checkbox is not checked, $strSearchMe will be empty.

 

Finally it's working. Thanks all for your help.

Best Regards,
Inderpal Singh

 

I'm doing something like this :

$value=$_REQUEST["checkbox"];
if ((!$value) || ($value=="") ) $value=0;

PHP:

 

I usually use the following trick.

<input type="hiddden" name="searchMe" value="0">
<input type="checkbox" name="searchMe" value="1">

HTML:

Only the last value is sent, so if the checkbox is checked 1 is sent, otherwise 0 is sent. Simplifies the PHP as there's always a value.