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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 |
---|---|
3234 | if ( ! empty( $limits ) ) { |
3235 | /** |
3236 | * Filters the query to run for retrieving the found posts. |
3237 | * |
3238 | * @since 2.1.0 |
3239 | * |
3240 | * @param string $found_posts_query The query to run to find the found posts. |
3241 | * @param WP_Query $this The WP_Query instance (passed by reference). |
3242 | */ |
3243 | $found_posts_query = apply_filters_ref_array( 'found_posts_query', array( 'SELECT FOUND_ROWS()', &$this ) ); |
3244 |
|
3245 | $this->found_posts = (int) $wpdb->get_var( $found_posts_query ); |
3246 | } else { |
3247 | if ( is_array( $this->posts ) ) { |
3248 | $this->found_posts = count( $this->posts ); |
3249 | } else { |
3250 | if ( null === $this->posts ) { |
3251 | $this->found_posts = 0; |
3252 | } else { |