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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 |
|---|---|
| 2560 | |
| 2561 | /** |
| 2562 | * Filters the SELECT clause of the query. |
| 2563 | * |
| 2564 | * @since 2.1.0 |
| 2565 | * |
| 2566 | * @param string $fields The SELECT clause of the query. |
| 2567 | * @param WP_Query $this The WP_Query instance (passed by reference). |
| 2568 | */ |
| 2569 | $fields = apply_filters_ref_array( 'posts_fields', array( $fields, &$this ) ); |
| 2570 | |
| 2571 | /** |
| 2572 | * Filters all query clauses at once, for convenience. |
| 2573 | * |
| 2574 | * Covers the WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT, |
| 2575 | * fields (SELECT), and LIMITS clauses. |
| 2576 | * |
| 2577 | * @since 3.1.0 |
| 2578 | * |