I've got a variable that will increment upon a user's action. Example: They click a link, and it adds 1 to the variable. The variable is then shown to the screen. I want this variable to be reset to 0 for the user, anytime the server's time has hit Midnight.

Could you provide a simple example script that does something like this so I can examine it and learn how it works please?

One way is to keep track of the day the link was last clicked. If the current day is different from the day it was last clicked then reset the counter:

PHP Code:

$lastClicked; //the day (ie date('j') ) the link was last clicked
$clickCounter;

if($lastClicked == date('j'))
     $clickCounter++;
else 
{
     $clickCounter = 0;
     $lastClicked = date('j');
} 


Originally Posted by NullPointer

One way is to keep track of the day the link was last clicked. If the current day is different from the day it was last clicked then reset the counter:

PHP Code:

$lastClicked; //the day (ie date('j') ) the link was last clicked
$clickCounter;

if($lastClicked == date('j'))
     $clickCounter++;
else 
{
     $clickCounter = 0;
     $lastClicked = date('j');
} 


If he is going to be displaying information based on this incrimental number then would a cronjob be useful? otherwise the number will remain the same until the user interacts with the site.

Have the cronjob reset the scores at midnight everynight.

A "cron hob" would only work if all the scores are held in a database, it could not affect "scores" held in cookies or sessions.