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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 |
|---|---|
| 3263 | * Filter the WHERE clause of the query. |
| 3264 | * |
| 3265 | * For use by caching plugins. |
| 3266 | * |
| 3267 | * @since 2.5.0 |
| 3268 | * |
| 3269 | * @param string $where The WHERE clause of the query. |
| 3270 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
| 3271 | */ |
| 3272 | $where = apply_filters_ref_array( 'posts_where_request', array( $where, &$this ) ); |
| 3273 | |
| 3274 | /** |
| 3275 | * Filter the GROUP BY clause of the query. |
| 3276 | * |
| 3277 | * For use by caching plugins. |
| 3278 | * |
| 3279 | * @since 2.5.0 |
| 3280 | * |
| 3281 | * @param string $groupby The GROUP BY clause of the query. |