The Blogger to WordPress tutorial uses this PHP snippet to redirect visitors on the Blogger blog to the corresponding post on the WordPress site.
When a visitor is redirected from Blogger to WordPress, the blogger slug is contained in the query parameter string. On the WordPress side, this string is parsed and matched against the “blogger_permalink” custom fields on WordPress. If a match if found, the visitor is redirected to the corresponding WordPress post using a 301 redirect.
query_vars['blogger']; if ( isset ( $blogger ) ) { wp_redirect( labnol_get_wordpress_url ( $blogger ) , 301 ); exit; } } add_action( 'template_redirect', 'labnol_blogger_template_redirect' ); function labnol_get_wordpress_url($blogger) { /* Extract the blogger slug from the full blogspot.com url */ if ( preg_match('@^(?:https?://)?([^/]+)(.*)@i', $blogger, $url_parts) ) { /* Query the WordPress database to find matching posts */ $query = new WP_Query ( array ( "meta_key" => "blogger_permalink", "meta_value" => $url_parts[2] ) ); /* if a match is found, get the permalink of the WordPress post */ if ($query->have_posts()) { $query->the_post(); $url = get_permalink(); } wp_reset_postdata(); } /* If permalink is not found, return the blog home page url */ return $url ? $url : home_url(); }