Updating data on remote server

Hello everybody! I've got a very intersting task for myself and I hope somebody can help me to solve it. I have a big site in the Internet that stores many information in several tables. The site is PHP and MySQL based. I have a copy of this site on my local server. Any data for the site I add and update on the local server and only then I upload it on my site in the Internet. The task is what is the best way to update my data on remote site? What programms in PHP should I write? Now I'm trying to use two ways (They can seem too boring) 1. I write all MySQL commands that executes on the local server into separate table. These commands are DELETE, UPDATE and ADD. Every record has (in field 'date') a time when it was executed. So from time to time I copy all commands to a text file, then copy file to the remote server and execute them there. 2. Every table has the field 'date'. When any infromation is UPDATEd or ADDed (not DELETEd) the time is writes into necessary row. So the time in field 'date' shows when the information was updated or added. Again from time to time I just copy commands (according to the time I select) to a text file, then copy file to the remote server and execute them there. In this case I don't know how the remote site will know what data was deleted on the local site. The problem is that these two methods are not proffesional written and have many lacks and the text files becomes too big for uploading (0.5 - 1 Mb). Could anybody give me any suggestions or links to related resources please? What methods to update data on the remote server from the local one are? Thanks, Dmitry Murashev