I'm operative upon creation a browser based, spin formed diversion as a approach of training myself php as well as mySQL as well as to have a bit of fun in a process. Many of a games of this sort have turns which renovate over time. But I'm not certain how to formula something similar to that.
What would be a most appropriate approach to have interpretation in a SQL list which changes over time in any case of either someone is accessing a PHP page or not?
You can't make it change over time, but you don't need to. You need to remember the last time it changed. The next time you need the data, compare the timestamp of the last change to the current timestamp, resolve any actions that should have happened in the interim, and update the database at that point (remembering to also update the timestamp).
If players may continue their game after a long absence, resolving all the actions since their last action may take a long time. To prevent this, schedule a script to run on a daily basis and resolve any outstanding actions at that point.
If the game is multiplayer, and the players' moves affect each other, then you must resolve all the actions each turn. If you have access to cron, you can schedule a script to run every minute. If you need the script to run more frequently, cron will not help you. Instead, you can write a single script, remove its time limit so the server lets it run indefinitely, and have it fork each game turn, with the child resolving whatever actions need to be taken and then terminating, while the parent waits for the next game turn in order to fork again.