Problem with (!isset($_POST['arrayname']))

[jakeone]

Hi,

I have a form:

for ($i=1; $i<=5; $i++)
{
echo "<input type=\"text\" name=\"keywords[]\" value=''><br>";
}

on submit, I test to see if the array keywords is empty:

if (!isset($_POST['keywords'])) {
echo "You must enter at least one keyword";
}

However, it doesn't work, i.e. during testing, I put nothing in the textfields and expect to see the error message, but don't. Any pointers would be appreciated.

[iceraider]

If your passing the variable through the form then it's set try to use empty()