Add link ID into an Array

[Dysan]

Hello,

 

I have a page containing 5 links, each link has a different ID number at the end. (Shown in Bold)

 

http://localhost/Memory.php?action=add&id=1

http://localhost/Memory.php?action=add&id=2

http://localhost/Memory.php?action=add&id=3

http://localhost/Memory.php?action=add&id=4

http://localhost/Memory.php?action=add&id=5

 

Each time a link is clicked, how do I add the id at the end of each link, to an array? But, if array already contains that particular ID, how do I display a message notifying the user e.g. "Already Added!"

 

Once in the array, how do I output the items in the array to the screen, along with a remove button.

 

Upon clicking the remove button, how do I delete the appropriate id from the array. The remove link will be in the form of the following:

 

http://localhost/Memory.php?action=delete&id=1

http://localhost/Memory.php?action=delete&id=2

http://localhost/Memory.php?action=delete&id=3

http://localhost/Memory.php?action=delete&id=4

http://localhost/Memory.php?action=delete&id=5

[Wes1890]

^ It would have to have a DB or flat file structure for saving the arrays (since it will be accessed by many users)