Report Query, formatted results needed (PHP)

Need a SQL query and proper php logic to construct a table of results for the following: the table in mysql contains search engine placement data, namely the name of the search engine, the keywords (up to 5, separated by pipe | in a string), the positions (numeric, also separated by pipe | in a string which match each keyword) and the week the data was gathered (numeric, say 49 as an example). Here's what the report needs to do: For each search engine, it needs to print out the heading (eg <h3>google</h3>), then print out a table with the keyword9s) in the left-most col, the week in the top row, and the positions in the row of each keyword. For example: | 45 | 46 | 47 | 48 | 49 | ------------------------------------------------------------- keyword1 | 36 | 40 | 30 | 25 | 30 | keyword2 | 1 | 4 | 6 | 4 | 10 | It needs to be repeated for each search engine (there are three of them who's data is in the table.) the report needs to look at the current week - 10 weeks, so basically it is historical to 10 weeks. The way the database table is constructed is each search engine has its own row for a given week, so google, msn, and yahoo each have a row of data for a given week (49 for example.) Here's the last interesting part - week to week, the keywords may change. if the keyword string changed since the last week, the report needs to add row(s) with the new keywords (see below - keyword 3 is new...added during week 47...and keyword 2 was removed during week 49.) | 45 | 46 | 47 | 48 | 49 | ------------------------------------------------------------- keyword1 | 36 | 40 | 30 | 25 | 30 | keyword2 | 1 | 4 | 6 | 4 | | keyword3 | | | 23 | 25 | 20 | Any questions, please PM me...should be simple for someone who knows php and mysql. Will provide mysql table schema and test data to the winning bidder, of course.