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Asked: 2026-05-31T15:16:51+00:00

I’ve always used MySQL with PHP and on my site I added a chat

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I’ve always used MySQL with PHP and on my site I added a chat system that uses MySQL which as you would know is VERY database heavy so I think I’m going to switch it over to XML files for each user just for the chat system to take all the load off of the DB.

I have never used XML with PHP before so I was looking for information, and found that the queries are pretty similar to MySQL.

Here are my questions:

  1. Is it the client writing to the file or the server writing to the file?
  2. Do I have to chmod them as 777?
  3. Do I also have to chmod the XML file as 777?
  4. If I do have to set the permissions to 777, does that drastically decrease security and is there any way to tighten that up?
  5. Does anyone have any tutorials they would recommend me to as well? Most of the stuff I found is from 2003 – 2005. Don’t know how much has changed in it.

Hope it’s cool I ask this question here.

Thanks a bunch
-Sal

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1 Answer

  1. Editorial Team

    First off, it seems like a very bad idea to do something that is very database intensive in xml, it is going to be a lot more intensive that way.

    To answer your question; It is always the server writing to the server filesystem. you only need to provide write access to the user running apache (and consequently php).

    I suggest you stick with mysql for chat but look into DOMDocument to learn more about xml

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