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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 |
|---|---|
| 571 | * the query is executed. |
| 572 | * |
| 573 | * The passed WP_User_Query object contains SQL parts formed |
| 574 | * from parsing the given query. |
| 575 | * |
| 576 | * @since 3.1.0 |
| 577 | * |
| 578 | * @param WP_User_Query $this Current instance of WP_User_Query (passed by reference). |
| 579 | */ |
| 580 | do_action_ref_array( 'pre_user_query', array( &$this ) ); |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * Execute the query, with the current variables. |
| 585 | * |
| 586 | * @since 3.1.0 |
| 587 | * |
| 588 | * @global wpdb $wpdb WordPress database abstraction object. |
| 589 | */ |