Easy problem (I think)

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.

When I do not click any of the buttons, my little test at the bottom returns "not empty"!? Surely it should be empty if I don't press anything? That is what I am aiming for anyway. 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";

NogDog

empty() returns true if the supplied argument evaluates as empty, not if it has non-empty data:

if (empty($chknotest)) {
   echo "empty";
}
else {
   print_r($chknotest);
}

didster

Ah! Thank you, that may explain a few things! Thank you for your help, I will test the code now!

didster

When I dont input anything, my code returns...

Array ( [0] => [1] => [2] => )

It looks as if there is no information there!? And when I tick all 3 tickboxes, my code returns...

Array ( [0] => (Go) [1] => (No GO Sector) [2] => (No GO Full Form) )

but there is no sight of the "empty" message.

NogDog

empty() returns true for an array if it has any elements (is not an empty array). It does not care what the values are of those elements. You need to see if any data was actually received, which could be as simple as:

if(emtpy($_POST['chkno']))
{
   // no checkbox data received
}

didster

Thank you so much, in your words "which could be as simple as". I thought it would be a simple answer but as I said, it is my first time getting to grips with the syntax and programming in general!

Much appreciated