It's all done in PHP / mySQL. I could sit here and explain the basics, but I personally believe you could easily accomplish this reading the basic tutorials.
PHP is the actual code, and mySQL would be what would store the stuff. You would insert into mySQL using code, and then use a query to find all "a" entries in the mySQL database.
You can learn a lot of this stuff from online tutorials. I assure you something like that wouldn't be that hard to accomplish. It'll take a bit to learn but it's WELL worth it. It's the only language I feel the need to go into detail in learning and striving to do well in it.
Oh, it could be done using other languages too. But PHP is the tried and tested best(IMO), although there is obviously other ones to use.
PHP is the actual code, and mySQL would be what would store the stuff. You would insert into mySQL using code, and then use a query to find all "a" entries in the mySQL database.
You can learn a lot of this stuff from online tutorials. I assure you something like that wouldn't be that hard to accomplish. It'll take a bit to learn but it's WELL worth it. It's the only language I feel the need to go into detail in learning and striving to do well in it.
Oh, it could be done using other languages too. But PHP is the tried and tested best(IMO), although there is obviously other ones to use.