PHP and MySQL data manipulation

I have a database. The database is in mysqlI have a php script, the php script works great.Here is what the PHP script does.1) It takes a DATA.csv file and imports it into mysql2) It takes second data I have a database. The database is in mysqlI have a php script, the php script works great.Here is what the PHP script does.1) It takes a DATA.csv file and imports it into mysql2) It takes second data2.csv file and imports it into mysql.3) Once the data is in the database, it then uses PHP to do a MATCHING.For example, if data1...