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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 2699 | |
| 2700 | /** |
| 2701 | * Filters the GROUP BY clause of the query. |
| 2702 | * |
| 2703 | * @since 2.0.0 |
| 2704 | * |
| 2705 | * @param string $groupby The GROUP BY clause of the query. |
| 2706 | * @param WP_Query $this The WP_Query instance (passed by reference). |
| 2707 | */ |
| 2708 | $groupby = apply_filters_ref_array( 'posts_groupby', array( $groupby, &$this ) ); |
| 2709 | |
| 2710 | /** |
| 2711 | * Filters the JOIN clause of the query. |
| 2712 | * |
| 2713 | * Specifically for manipulating paging queries. |
| 2714 | * |
| 2715 | * @since 1.5.0 |
| 2716 | * |
| 2717 | * @param string $join The JOIN clause of the query. |