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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 |
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519 |
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520 | if ( !empty( $qv['include'] ) ) { |
521 | $ids = implode( ',', wp_parse_id_list( $qv['include'] ) ); |
522 | $this->query_where .= " AND $wpdb->users.ID IN ($ids)"; |
523 | } elseif ( !empty($qv['exclude']) ) { |
524 | $ids = implode( ',', wp_parse_id_list( $qv['exclude'] ) ); |
525 | $this->query_where .= " AND $wpdb->users.ID NOT IN ($ids)"; |
526 | } |
527 |
|
528 | do_action_ref_array( 'pre_user_query', array( &$this ) ); |
529 | } |
530 |
|
531 | /** |
532 | * Execute the query, with the current variables |
533 | * |
534 | * @since 3.1.0 |
535 | * @access private |
536 | */ |
537 | function query() { |