constantly checking if a variable has been changed

[envexlabs]

Hey,

 

I have a cart that displays the total of all items in the cart.

 

The items are added/removed from the cart via ajax, and i want to be able to update the total when an item is added/removed from the cart.

 

How would i go about creating a loop or something that is constantly checking to see if $total has been changed?

 

Thanks,

 

envex.

[premiso]

Why create a loop?

 

Whenever an item is added or removed, change the total accordingly...Since you know when it needs to happen, no need to loop.

 

 

[MadTechie]

echo $premiso;

echo "and for Qty use on change!";