WordPress Search on Multiple wp sites

You’ll need to have a look at the posts_clauses filter. There’re more specialised filters as well like posts_where, but you’ll finally end up using the all in one filter. Then you can inspect the outcome using the ‘posts_selection’ hook right below that, or the posts_results filter a bit later on. There’s as well the posts_search … Read more

How to remove the trackback and pingback text on the bottom of my pages?

You can uncheck Settings >> Discussion >> “Allow link notifications from other blogs (pingbacks and trackbacks) to disable disable for future posts. However, to disable for exiting posts you need to run a SQL query on your database to turn the ping_status to OFF: UPDATE wp_posts SET ping_status=”closed” WHERE post_status=”publish” AND post_type=”post”; and UPDATE wp_posts … Read more

Best way to modify theme

If I understand it correctly, making a child theme and putting your custom single.php and archive.php in there should achieve this effect. The child theme files will be called ahead of the parent theme files. Good discussion here: https://wordpress.org/support/topic/how-do-you-handle-custom-template-files-with-child-themes Happy coding!