I want to create a drop down in my WordPress admin containing all posts, pages and custom post types. The return value should be a link to that page or an ID of the page.
Is there something build in for this, or is there an easy way to do it? Thanks in forward.
There is nothing build-in to create the drop-down for you, so you have to do it yourself. To get the needed information you can use get_post_types() to get the post types you want, set the $args parameter accordingly.
Additionally you can set the $ouput parameter to objects, if you need the data provided - it defaults to names and then you will just get those. Take a look at the get_post_type_object() to see how the returned objects are structured.
As for the dropdown, as I said, you have to build it yourself - this really isn't WordPress specific, but a really simple PHP task. For the dropdown you'll need the links to the different post type edit screens. They generally look like this:
http://site.ext/wp-admin/edit.php?post_type=posttypename
If you're not sure how to build it, then perform a internet search, because how to construct a dropdown has certainly been the topic somewhere already.
