What's i need to write in a log file generate by cron php?
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I'm creating a web-application who get xml flux and insert datas in a DB.  For sécurity'reasons i want to générate log'files when a script finish but what's the important information that i can write in that?
I have make this list
- number of datas (lines) injected to the database
- date'update

What's informations can i forget ?