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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 |
|---|---|
| 3689 | |
| 3690 | /** |
| 3691 | * Filter the number of found posts for the query. |
| 3692 | * |
| 3693 | * @since 2.1.0 |
| 3694 | * |
| 3695 | * @param int $found_posts The number of posts found. |
| 3696 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
| 3697 | */ |
| 3698 | $this->found_posts = apply_filters_ref_array( 'found_posts', array( $this->found_posts, &$this ) ); |
| 3699 | |
| 3700 | if ( ! empty( $limits ) ) |
| 3701 | $this->max_num_pages = ceil( $this->found_posts / $q['posts_per_page'] ); |
| 3702 | } |
| 3703 | |
| 3704 | /** |
| 3705 | * Set up the next post and iterate current post index. |
| 3706 | * |
| 3707 | * @since 1.5.0 |