Easy question for a newbie

[didster]

Hello, I am very new to PHP so appologies if the code is awful. I am sure that someone will give me a simple answer!

 

I have also used a few lines to test for myself. I have an HTML form that passes the variable chkno[] through to the seperate PHP file. Chkno[] is an array of 3 checkbox buttons.

 

<input type="checkbox" id="chkno" name="chkno[]" value="(Go)"/>

<input type="checkbox" id="chkno" name="chkno[]" value="(No GO Sector)"/>

<input type="checkbox" id="chkno" name="chkno[]" value="(No GO Full Form)"/>

 

When I do not click any of the buttons, my little test at the bottom returns not empty!? Please can anyone help?

 

 

$chknotest0 = $_POST['chkno'][0];

$chknotest1 = $_POST['chkno'][1];

$chknotest2 = $_POST['chkno'][2];

 

$chknotest=array("$chknotest0", "$chknotest1", "$chknotest2");

 

 

print_r($chknotest);

 

if (empty($chknotest))

print_r($chknotest);

else echo "not empty";

[lordfrikk]

There is no need to use double quotes when passing only variables:

 

$chknotest=array($chknotest0, $chknotest1, $chknotest2);

 

By the way, what are you trying to test with this little script?

[didster]

Thankyou,

 

The return that I get is...

 

Array ( [0] => [1] => [2] => ) not empty

 

... so even though there is nothing typed in the tick boxes, my test still returns not empty! My test is to determine that at least one of the tick boxes is pressed. It doesnt matter which one of the three. As I say, I am only a beginner so I am probably way off the mark,

 

Thankyou for your help so far!

[didster]

The proper return...

 

Array ( [0] => [1] => [2] => ) not empty

[didster]

Whats going off here!?

[wildteen88]

Before using user input variables ($_GET, $_POST, $_COOKIE etc) you should always check to see if they exists first and apply some form of validation:

if(isset($_POST['chkno']) && is_array($_POST['chkno']))
{
    $chknotest = $_POST['chkno'];

    print_r($chknotest);
}
else
{
    echo '$_POST[\'chkno\'] empty';
}