What is an Undefined offset error?

[Anon]

Does any one know what this error message means?

[Tue Apr 09 16:17:44 2002] [error] PHP Warning: Undefined offset: 2 in d:\apache\apache\htdocs\php\billing\inc\state_list.inc on line 8

It comes up in my Apache error.log file after this script gets called via an include statement.

<?
$state = array(\'NJ\', \'MD\');
echo \"<select name=\'state\'>\";
//this for loop returns a formatted option tag for the state select list
$i = 0;
for($i=$i; $i<=50; $i++)
{
echo \"<option value=\'\".$state[$i].\"\'>\".$state[$i].\"</option>\";
}

echo \"</select>\";
?>

Thanks for the help/suggestions.

Tom

[Anon]

I think I just figured out my problem. In my script, I only have two items in my array ($state[0] and $state[1]) but my counter variable in the for loop is set to be $i <= 50 hence the error. I just changed it to $i <=1 (since there are only two array elements and no more Undefined offset error!