php-help

sir, iam new to php i'll explain my problem .if u could help i'll be very thankful... in my mysql database i have two tables i.e., table1 and table2. i have an array of result from one query "select feild1 from table1 " i have to use this result in another query..... "select field2 from table 2 where field1 = (array of first query iterated)" can u help me doing this in php. thanks, karthik