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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

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Line Code
3334           if ( ! $q['suppress_filters'] ) {
3335                /**
3336                 * Filters the raw post results array, prior to status checks.
3337                 *
3338                 * @since 2.3.0
3339                 *
3340                 * @param WP_Post[] $posts Array of post objects.
3341                 * @param WP_Query  $query The WP_Query instance (passed by reference).
3342                 */
3343                $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) );
3344           }
3345
3346           if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) {
3347                /** This filter is documented in wp-includes/query.php */
3348                $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) );
3349
3350                /** This filter is documented in wp-includes/query.php */
3351                $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) );
3352