Class php yang bagus

http://www.phpclasses.org/package/7221-PHP-Search-for-content-on-MySQL-or-Sphinx.html 
http://www.phpclasses.org/package/7165-PHP-Extract-information-from-Web-site-pages.html

http://www.phpclasses.org/package/7244-PHP-Synchronize-MySQL-databases.html
This class can be used to synchronize MySQL databases.

It can connect to two MySQL databases with the same table structure and perform operations that synchronize their contents according to certain rules.

Currently it is possible to define rules for which tables will synchronized and for the records to be deleted before synchronizing.

The class generates one file with SQL statements and then reads the file again to execute the generated SQL on the target database