Upload and read CSV file line by line

I am looking for a way to upload a CSV file and read the contents line by line.

I have the form named CSV_Importer and the field name is CSV_Upload

So far I have ...

for each row in CSV_Importer [CSV_Upload != ""]

{

echo row;

}

I'm familiar with PHP and can script in Python , but I'm not understanding the syntax because the above gives me errors in the script builder.