Yes but you certainly can check ANY variable with isset(), not just
superglobal arrays.
In addition to the technical differences between empty() and isset(), I
would add that empty() is quite convenient and under-utilized. Consider
if (isset($_GET['q'] && $_GET['q']) { ........ }
versus
if (!empty($_GET[) { ....... }
empty() also has a cooler, more Zen-like name.
On 5/18/07, David Krings <[EMAIL PROTECTED]> wrote:
>
isset() checks if a key exists in a server array such as $_SESSION or
$_POST regardless of the value, which can be NULL or an empty string. I
never used empty(), but just by the name of it that function checks if
the value of a given variable or array key is considered "nothing" for
the respective variable type.
--
David Mintz
http://davidmintz.org/
Just a spoonful of sugar helps the medicine go down
In a most delightful way.
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