The reason for the error message is that when you performed the @number=<CINGULAR>;, you read the entire list into an array. This means you might have something like:

$number[0] = '888-555-1212'
$number[1] = '666-555-3456'
$number[2] = '123-555-9432'
[download]

More likely what you intended in your if statement was something $number[$count] rather than @number, as this would allow you to loop thru the elements.

Hope that helps.