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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 |
|---|---|
| 3301 | * Filter the JOIN clause of the query. |
| 3302 | * |
| 3303 | * For use by caching plugins. |
| 3304 | * |
| 3305 | * @since 2.5.0 |
| 3306 | * |
| 3307 | * @param string $join The JOIN clause of the query. |
| 3308 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
| 3309 | */ |
| 3310 | $join = apply_filters_ref_array( 'posts_join_request', array( $join, &$this ) ); |
| 3311 | |
| 3312 | /** |
| 3313 | * Filter the ORDER BY clause of the query. |
| 3314 | * |
| 3315 | * For use by caching plugins. |
| 3316 | * |
| 3317 | * @since 2.5.0 |
| 3318 | * |
| 3319 | * @param string $orderby The ORDER BY clause of the query. |