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set_query_var() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/set_query_var/
    $sample = 'a sample variable'; $year = 2019; $arr = [ 'sample' => $sample, 'year' => $year ]; set_query_var( 'multiVar', $arr ); get_template_part( 'b' ); get_template_part( 'c' ); On the b.php file: $arr = get_query_var( 'multiVar' ); echo $arr['year']; // …

WP::set_query_var() Method WordPress Developer Resources

    https://developer.wordpress.org/reference/classes/wp/set_query_var/
    Sets the value of a query variable.

WP_Query::set() Method WordPress Developer Resources

    https://developer.wordpress.org/reference/classes/wp_query/set/
    wp-includes/query.php: set_query_var() Sets the value of a query variable in the WP_Query class.

Using set_query_var to pass parameters ... - WordPress.org

    https://wordpress.org/support/topic/using-set_query_var-to-pass-parameters-between-template-parts/
    Support » Developing with WordPress » Using set_query_var to pass parameters between template parts. Using set_query_var to pass parameters between template parts. Giorgos Sarigiannidis (@gsarig) 1 year, 6 months ago. Hi, I have a page template that calls some template parts using get_template_part(). On each of the template parts I need to ...

Function Reference/get query var « WordPress Codex

    https://codex.wordpress.org/Function_Reference/get_query_var
    Check out the new WordPress Code Reference! Function Reference/get query var Languages : English • Italiano • query var 日本語 ( Add your language )

WordPress Query Vars « WordPress Codex

    https://codex.wordpress.org/WordPress_Query_Vars
    Query vars define a query for WordPress posts. When ugly permalinks are enabled, query variables can be seen in the URL. For example, in the URL http://example.com/?p=1 the p query var is set to 1, which will display the single post with an ID of 1. When pretty permalinks are enabled, URLs don't include query variables.

query_vars Hook WordPress Developer Resources

    https://developer.wordpress.org/reference/hooks/query_vars/
    apply_filters ('query_vars', string [] $public_query_vars) Filters the query variables allowed before processing.

get_query_var() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/get_query_var/
    So, to expose your new, custom query variable to WP_Query hook into the ‘ query_vars ‘ filter, add your query variable to the $vars array that is passed by the filter, and remember to return the array as the output of your filter function.

How To Add A Custom Filter To WordPress Users List

    https://www.intelliwolf.com/how-to-add-a-custom-filter-to-wordpress-users-list/
    Dec 12, 2019 · Create the filter dropdown and button inside a function. Add that function to the ' restrict_manage_users ' action. Add a new filter for ' pre_get_users '. Look at the $_GET parameters to see which button was clicked. Change the meta query accordingly.

Global Variables « WordPress Codex

    https://codex.wordpress.org/Global_Variables
    WordPress-specific global variables are used throughout WordPress code for various reasons. Almost all data that WordPress generates can be found in a global variable. Note that it's best to use the appropriate API functions when available, instead of modifying globals directly.
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