php File from VBA prototyp

Hello I need a php script. It is called with parameters from a (POST) programm and interacts with a mysql table. I have programmed a prototype with vba which is working (mdb). The vba-code works and contains about 4 pages (A4). I have already a version of this required php script - but it is not working. The bad thing about it is, that I have no idea how to debug the php script so I can be sure that it is working without any mistakes. Job description 1) Use the vba prototype and check whether the php script works – at least theoretically. a. I will provide you with the mdb and a sample mysql dump so some tests can be made this way. The table is not in use at the moment so we can set up a testing environment. b. I will set up a test scenario in order to test the script thoroughly. 2) There are three more small scripts (half page A4) which have to be controlled and checked. They should work but I need a way to ensure that the functionality is perfect. Job goal I need to be 100% sure that all four scripts are working properly. Thanks.