please clarify...

I can't, since I know nothing neither about the environment of your script, nor do I know its purpose, and I don't know of any sample data, whether input or output, and there is no code except a snippet which surely isn't the culprit. With the information you provided all I can do is guessing. How would you make an educated guess from the piece of code you posted without knowing anything else?

See I know what I mean. Why don't you?