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How to change the parameters of a WP query?
Modifying Existing WP_Query s with pre_get_posts pre_get_posts is a filter that makes it possible to alter the parameters of an existing WP_Query, before it fetches its post bundle from the WordPress database—thereby changing the post bundle it ultimately fetches.
How to add a query to a URL in WordPress?
This way you don’t have to parse get_permalink (), see if there are already query parameters in there. You just pass in the key-value pairs of what you would like to add and you pass in the original URL as the third argument. See http://codex.wordpress.org/Function_Reference/add_query_arg for more info.
How to use URL parameters to pass data to WordPress?
So, we decided to use a URL parameter that the client could add to the URL when pasting it into the external marketing page, along with some simple code in the header.php, footer.php and functions.php files of their theme. We added the following code snippet in the theme’s functions.php file.
How to get a parameter from a URL in PHP?
WordPress Code Reference Since get_query_var can only access query parameters available to WP_Query, in order to access a custom query var like ‘ppc’, you will also need to register this query variable within your plugin or functions.php by adding an action during initialization: Here three things are happening.
How to create a custom WP _ query object?
This article covers the standard use of WP_Query: writing custom queries by creating new WP_Query objects with custom $args, and then looping through those custom queries to create the desired page output. The power of creating a WP_Query object is in the custom arguments you pass into the creation process.
Can a WP _ query object be used without a loop?
Using WP_Query Objects Without the Loop This section explores WP_Query objects not as a mysterious things we can loop through, but as PHP objects with well-defined properties. Being able to work with WP_Query objects directly makes some things possible that you can’t do with standard loops.
What do you need to know about WP query?
Before you learn WP_Query directly, you’ll need to understand the basic engine of WordPress: the Loop, which takes these bundles of fetched posts, and processes them, one after the other, into the contents of your site’s pages. The Loop works on a fetched bundle of posts, and it processes through them one by one.
How to get post title from WP _ query?
For example, for a WP_Query called $query, you can directly access the array of fetched posts with $query->posts, you can get the post title of the first fetched post with $query->posts [0]->post_title, and so on.