Web based application form with admin backend

I need an online application form preferably in php and making use of Ajax and MySQL The user will fill out the forms details, click submit they will be shown what they just entered and be given the chance to edit or finaly submit on succesfull submission the user will see a thank you page. the form will be stored on the db and the details emailed to s pecified email address. The system requires an admin backend that wil allow the data to be viewed, edited deleted or sorted. some ideas for fuctionality [login to view URL] and for the backend [login to view URL] I have tried to impliment the second script but it keeps giving me an error the backebnd will need to be secure i.e. user id and password possibly reCaptcha. The form will need to be validated during use input.