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Is there a way to prevent a code-block or a function within a code from running more than once even if I re-execute (or reload) the PHP file?
I mean, can I restrict someone from executing a php script more than once? I can’t seem to find the way to do this.
I have an app that does that.
What we did was create a table in the db called version, and stored a version number in there. When the script is ran, it compared the version number in the database with that in the php script. And perform whatever it needs to “upgrade” it to the new version, and then updates the version number in the database.
Of couse, if the version table does not exist, the code will create it and mark it as storing version zero.