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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 |
---|---|
2685 |
|
2686 | /** |
2687 | * Filters the DISTINCT clause of the query. |
2688 | * |
2689 | * @since 2.1.0 |
2690 | * |
2691 | * @param string $distinct The DISTINCT clause of the query. |
2692 | * @param WP_Query $this The WP_Query instance (passed by reference). |
2693 | */ |
2694 | $distinct = apply_filters_ref_array( 'posts_distinct', array( $distinct, &$this ) ); |
2695 |
|
2696 | /** |
2697 | * Filters the LIMIT clause of the query. |
2698 | * |
2699 | * @since 2.1.0 |
2700 | * |
2701 | * @param string $limits The LIMIT clause of the query. |
2702 | * @param WP_Query $this The WP_Query instance (passed by reference). |
2703 | */ |