I want to switch from mysql to mysqli and I found the MySQL Converter Tool. I couldn't use for all the directory but I can use it to convert a snippet. In the project that I'm working I have close to 70 files but the good news is that I use a class so basically the file to modify is just db.class.php (it's an old class found it online few years ago you can see here [slaout.linux62.org...]
I tryed to modify but I don't know if the result is correct, I have the file and I wish somebody more expert than me could give a look (it's around 300 rows). I receive some errors but the class seems working but I'm not sure at all.