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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 |
---|---|
600 | * Filters SELECT FOUND_ROWS() query for the current WP_User_Query instance. |
601 | * |
602 | * @since 3.2.0 |
603 | * |
604 | * @global wpdb $wpdb WordPress database abstraction object. |
605 | * |
606 | * @param string $sql The SELECT FOUND_ROWS() query for the current WP_User_Query. |
607 | */ |
608 | if ( isset( $qv['count_total'] ) && $qv['count_total'] ) |
609 | $this->total_users = (int) $wpdb->get_var( apply_filters( 'found_users_query', 'SELECT FOUND_ROWS()' ) ); |
610 |
|
611 | if ( !$this->results ) |
612 | return; |
613 |
|
614 | if ( 'all_with_meta' == $qv['fields'] ) { |
615 | cache_users( $this->results ); |
616 |
|
617 | $r = array(); |
618 | foreach ( $this->results as $userid ) |