PHP script to modify a CSV file

I need a simple PHP script to do the following actions: - open a CSV file from a folder - load the data from the CSV file into a MySQL database - Perform some operations on the database, including: a) deleting rows with specific content in some fields b) replace the data in some fileds using the data from another table in the same db (the other table will contain 3 fields: "field name", "search term", "replace term", the script must search for all the records that contains "search term" in the field "field name", and replace the content with the "replace term" - when all the modifications are complete, the script must generate a new CSV file, based on a template that will be provided - after generating the new CSV file, the script must empty the table used to load the data and send an email with the file in attachment. The script will run on a cron job, so there must be no output beside the file and the email. Contact me if you need more details/info.