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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 |
|---|---|
| 946 | if ( $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) { |
| 947 | /** |
| 948 | * Filters the query used to retrieve found comment count. |
| 949 | * |
| 950 | * @since 4.4.0 |
| 951 | * |
| 952 | * @param string $found_comments_query SQL query. Default 'SELECT FOUND_ROWS()'. |
| 953 | * @param WP_Comment_Query $comment_query The `WP_Comment_Query` instance. |
| 954 | */ |
| 955 | $found_comments_query = apply_filters( 'found_comments_query', 'SELECT FOUND_ROWS()', $this ); |
| 956 | |
| 957 | $this->found_comments = (int) $wpdb->get_var( $found_comments_query ); |
| 958 | } |
| 959 | } |
| 960 | |
| 961 | /** |
| 962 | * Fetch descendants for located comments. |
| 963 | * |
| 964 | * Instead of calling `get_children()` separately on each child comment, we do a single set of queries to fetch |