is_object($$payment) ?

[deep]

is_object($$payment)

Noticed two $$, what does that mean?

[bubblocity]

For: is_object($$payment)

I think if $payment = "visa", it's asking if

is_object($visa)

[bubblocity]

I guess it's called variable variables.

http://www.php.net/manual/en/language.variables.variable.php