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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 872 | * Filter SELECT FOUND_ROWS() query for the current WP_User_Query instance. |
| 873 | * |
| 874 | * @since 3.2.0 |
| 875 | * |
| 876 | * @global wpdb $wpdb WordPress database abstraction object. |
| 877 | * |
| 878 | * @param string $sql The SELECT FOUND_ROWS() query for the current WP_User_Query. |
| 879 | */ |
| 880 | if ( isset( $qv['count_total'] ) && $qv['count_total'] ) |
| 881 | $this->total_users = $wpdb->get_var( apply_filters( 'found_users_query', 'SELECT FOUND_ROWS()' ) ); |
| 882 | |
| 883 | if ( !$this->results ) |
| 884 | return; |
| 885 | |
| 886 | if ( 'all_with_meta' == $qv['fields'] ) { |
| 887 | cache_users( $this->results ); |
| 888 | |
| 889 | $r = array(); |
| 890 | foreach ( $this->results as $userid ) |