Variables passed through address

[cabadam]

Ok, I know you can pass variables to a script by saying:
a.php?count=2
in the address.

But how can you tell if something has been passed or not?
Thanks,
Adam Clauss

[dstockto]

Use the isset() function. For example,

<?php
if (isset($count))
{
echo ($count);
} else {
$count = 1;
}

This will output the value of count if it is passed and otherwise will initialize a new variable count to the value of 1.

Hope this helps.

Dave

[Anon]

<?php
echo (isset($count) || !empty($count) || $count != '') ? "TRUE" : "FALSE";
?>