PDO or MySQLi, and PHP

I need some help with MySQLi or PDO (database queries from PHP). Although familiar with basic MySQL, I need an expert to help make sure that this particular form/database is very secure (secure from MySQL injection, XSS, etc). I assume this will mean using PDO or MySQLi. The database will be queried by website visitors using a PHP form. So I'll need the PHP code for both Inserting/submitting to, and Selecting/displaying data from, the database. If there are any security concerns with the database structure, then I'll also need the SQL query to create the database/table. The database fields will be as follows: 1) unique id - auto incrementing) 2) varchar(150) - email address only 3) varchar(70) - letters only 4) a 4 digit integer 5) timestamp 6) text *Neither the text nor varchar fields should allow any html or javascript. **And again, the main thing is that I want this database/php to be secure from MySQL injection, XSS, etc. With your bid, please let me know if you'll be using MySQLi or PDO. Also please let me know your expected turnaround time. Thanks for reading!