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Making sure 2 people don't alter the same data


cliftonbazaar

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I have a game running which allows players to compete against each other.  I have now found out that if both players are online at the same time then the server trys to run the same queries at the same time, with differant results that confuses everyone :confused:

 

How do I 'Lock' a piece of data so it can only be opened once by the PHP code; but it also needs to be available in 'read only' for other players.

 

Any suggestions would be helpful and a link to a tutorial would be even better :happy-04:

 

James

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