Dave questions

• PHP code to compare two large text files with ~300,000 entries and output differences
• What is a "predicate based search"?
• PHP / AJAX toolkit to make a "live graph" (eg for tracing stock prices)
• converting GPS latitude/longitude from different formats to one format (in PHP)
• GUNZIP / Extract file "portion by portion"
• How to resume an ftp download at any point? (shell script, wget option)?

Dave answers