PHP to Post PM on Reddit to Users

I need the following, i think you can use the following bot to do this with some adjustments [login to view URL] or perhaps looks at something like the reditr chrome add on which has bulk message sending 1. html interface to upload a CSV file of reddit user names, and an input field for a message, and how many seconds to wait between msg sends, also for reddit fields: username password 2. take the message and format it to meet the posting standard for reddit. 3. on submission show in the HTML the total of the usernames and total msgs which have been sent until completion 4. might need to do some error checking, and present that (for example if reddit requires captcha) - in this case ensure that #3 happens so i can see what was the last user that received a PM