Pages & Subpages – Is Parent?

wp_subpage
WordPress allows to create sub-pages in your backend. This is why many uses WordPress as a CMS. Sometimes you like with the help of the Conditional Tags to start several queries with a certain respond – but then you see frequently in the template static queries on any ID of a page.
But it's possible to handle this differently, and simpler when it comes to pages or sub-pages of this page.

With this solution you can, for example, in dependence of a page, load a specific layout. This small request I'll take as an example and show a function that gives queries to pages / sub-pages and I will show an example in action.
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