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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 |
|---|---|
| 696 | * |
| 697 | * The passed WP_User_Query object contains SQL parts formed |
| 698 | * from parsing the given query. |
| 699 | * |
| 700 | * @since 3.1.0 |
| 701 | * |
| 702 | * @param WP_User_Query $this The current WP_User_Query instance, |
| 703 | * passed by reference. |
| 704 | */ |
| 705 | do_action_ref_array( 'pre_user_query', array( &$this ) ); |
| 706 | } |
| 707 | |
| 708 | /** |
| 709 | * Execute the query, with the current variables. |
| 710 | * |
| 711 | * @since 3.1.0 |
| 712 | * |
| 713 | * @global wpdb $wpdb WordPress database object for queries. |
| 714 | */ |