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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 |
---|---|
3201 |
|
3202 | /** |
3203 | * Filter the GROUP BY clause of the query. |
3204 | * |
3205 | * @since 2.0.0 |
3206 | * |
3207 | * @param string $groupby The GROUP BY clause of the query. |
3208 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
3209 | */ |
3210 | $groupby = apply_filters_ref_array( 'posts_groupby', array( $groupby, &$this ) ); |
3211 |
|
3212 | /** |
3213 | * Filter the JOIN clause of the query. |
3214 | * |
3215 | * Specifically for manipulating paging queries. |
3216 | * |
3217 | * @since 1.5.0 |
3218 | * |
3219 | * @param string $join The JOIN clause of the query. |