Regular expression- split at comma but not if between double quotes

[Caitlin-havener]

Hey there! I'm trying to read in a csv and split the data at commas unless the string is encapsulated between double quotes. How would I do this? I know the function, its just the regular expression that confuses me!

[justsomeguy]

There are a few user-contributed functions on this page, most of them don't use regular expressions to parse the entire line though: http://www.php.net/manual/en/function.str-getcsv.php