Feed Cache in WordPress

WordPress already offers the possibility of own functions to read feeds and use it in your blog. Since version 2.8 of WordPress, a new feature is in use for that. So there are two ways to work with feeds in WordPress, and in both functions, the data is cached. But this is not always wanted, so I show how to take influence on caching of the two functions.
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Easier And Better Solutions To Get Pictures On Your Posts

WordPress makes it pretty easy to upload picture on posts and pages. Thereby are various data stored, which can be used.
Again and again, you can read tutorials on how to bring photos to posts, normally this is a solution via the custom fields. But there is a different and simpler solution, I think. The maintenance of custom fields is not always necessary.
Therefore, I would like to show some solutions that are, in my opinion, much better and can be expanded in many ways.

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WordPress Database Functions

The WordPress database class is quite extensive and provides a range of methods to work effectively with the database and thereby use the WordPress standard.

You can find the class in /wp-includes/wp-db.php where the individual methods are documented.
I show the most important ones and give some small examples. It is important to work with these opportunities to ensure the safety of Plugins.

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