1023 lines
32 KiB
PHP
1023 lines
32 KiB
PHP
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<?php
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/**
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* Canonical API to handle WordPress Redirecting
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*
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* Based on "Permalink Redirect" from Scott Yang and "Enforce www. Preference"
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* by Mark Jaquith
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*
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* @package WordPress
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* @since 2.3.0
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*/
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/**
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* Redirects incoming links to the proper URL based on the site url.
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*
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* Search engines consider www.somedomain.com and somedomain.com to be two
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* different URLs when they both go to the same location. This SEO enhancement
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* prevents penalty for duplicate content by redirecting all incoming links to
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* one or the other.
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*
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* Prevents redirection for feeds, trackbacks, searches, and
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* admin URLs. Does not redirect on non-pretty-permalink-supporting IIS 7+,
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* page/post previews, WP admin, Trackbacks, robots.txt, favicon.ico, searches,
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* or on POST requests.
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*
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* Will also attempt to find the correct link when a user enters a URL that does
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* not exist based on exact WordPress query. Will instead try to parse the URL
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* or query in an attempt to figure the correct page to go to.
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*
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* @since 2.3.0
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*
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* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
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* @global bool $is_IIS
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* @global WP_Query $wp_query WordPress Query object.
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* @global wpdb $wpdb WordPress database abstraction object.
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* @global WP $wp Current WordPress environment instance.
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*
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* @param string $requested_url Optional. The URL that was requested, used to
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* figure if redirect is needed.
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* @param bool $do_redirect Optional. Redirect to the new URL.
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* @return string|void The string of the URL, if redirect needed.
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*/
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function redirect_canonical( $requested_url = null, $do_redirect = true ) {
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global $wp_rewrite, $is_IIS, $wp_query, $wpdb, $wp;
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if ( isset( $_SERVER['REQUEST_METHOD'] ) && ! in_array( strtoupper( $_SERVER['REQUEST_METHOD'] ), array( 'GET', 'HEAD' ), true ) ) {
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return;
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}
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// If we're not in wp-admin and the post has been published and preview nonce
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// is non-existent or invalid then no need for preview in query.
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if ( is_preview() && get_query_var( 'p' ) && 'publish' === get_post_status( get_query_var( 'p' ) ) ) {
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if ( ! isset( $_GET['preview_id'] )
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|| ! isset( $_GET['preview_nonce'] )
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|| ! wp_verify_nonce( $_GET['preview_nonce'], 'post_preview_' . (int) $_GET['preview_id'] )
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) {
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$wp_query->is_preview = false;
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}
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}
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if ( is_admin() || is_search() || is_preview() || is_trackback() || is_favicon()
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|| ( $is_IIS && ! iis7_supports_permalinks() )
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) {
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return;
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}
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if ( ! $requested_url && isset( $_SERVER['HTTP_HOST'] ) ) {
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// Build the URL in the address bar.
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$requested_url = is_ssl() ? 'https://' : 'http://';
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$requested_url .= $_SERVER['HTTP_HOST'];
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$requested_url .= $_SERVER['REQUEST_URI'];
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}
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$original = parse_url( $requested_url );
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if ( false === $original ) {
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return;
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}
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$redirect = $original;
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$redirect_url = false;
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$redirect_obj = false;
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// Notice fixing.
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if ( ! isset( $redirect['path'] ) ) {
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$redirect['path'] = '';
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}
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if ( ! isset( $redirect['query'] ) ) {
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$redirect['query'] = '';
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}
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/*
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* If the original URL ended with non-breaking spaces, they were almost
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* certainly inserted by accident. Let's remove them, so the reader doesn't
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* see a 404 error with no obvious cause.
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*/
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$redirect['path'] = preg_replace( '|(%C2%A0)+$|i', '', $redirect['path'] );
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// It's not a preview, so remove it from URL.
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if ( get_query_var( 'preview' ) ) {
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$redirect['query'] = remove_query_arg( 'preview', $redirect['query'] );
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}
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$post_id = get_query_var( 'p' );
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if ( is_feed() && $post_id ) {
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$redirect_url = get_post_comments_feed_link( $post_id, get_query_var( 'feed' ) );
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$redirect_obj = get_post( $post_id );
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if ( $redirect_url ) {
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$redirect['query'] = _remove_qs_args_if_not_in_url(
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$redirect['query'],
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array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type', 'feed' ),
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$redirect_url
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);
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$redirect['path'] = parse_url( $redirect_url, PHP_URL_PATH );
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}
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}
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if ( is_singular() && $wp_query->post_count < 1 && $post_id ) {
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$vars = $wpdb->get_results( $wpdb->prepare( "SELECT post_type, post_parent FROM $wpdb->posts WHERE ID = %d", $post_id ) );
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if ( ! empty( $vars[0] ) ) {
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$vars = $vars[0];
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if ( 'revision' === $vars->post_type && $vars->post_parent > 0 ) {
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$post_id = $vars->post_parent;
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}
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$redirect_url = get_permalink( $post_id );
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$redirect_obj = get_post( $post_id );
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if ( $redirect_url ) {
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$redirect['query'] = _remove_qs_args_if_not_in_url(
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$redirect['query'],
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array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ),
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$redirect_url
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);
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}
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}
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}
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// These tests give us a WP-generated permalink.
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if ( is_404() ) {
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// Redirect ?page_id, ?p=, ?attachment_id= to their respective URLs.
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$post_id = max( get_query_var( 'p' ), get_query_var( 'page_id' ), get_query_var( 'attachment_id' ) );
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$redirect_post = $post_id ? get_post( $post_id ) : false;
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if ( $redirect_post ) {
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$post_type_obj = get_post_type_object( $redirect_post->post_type );
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if ( $post_type_obj && $post_type_obj->public && 'auto-draft' !== $redirect_post->post_status ) {
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$redirect_url = get_permalink( $redirect_post );
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$redirect_obj = get_post( $redirect_post );
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$redirect['query'] = _remove_qs_args_if_not_in_url(
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$redirect['query'],
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array( 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ),
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$redirect_url
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);
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}
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}
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$year = get_query_var( 'year' );
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$month = get_query_var( 'monthnum' );
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$day = get_query_var( 'day' );
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if ( $year && $month && $day ) {
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$date = sprintf( '%04d-%02d-%02d', $year, $month, $day );
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if ( ! wp_checkdate( $month, $day, $year, $date ) ) {
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$redirect_url = get_month_link( $year, $month );
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$redirect['query'] = _remove_qs_args_if_not_in_url(
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$redirect['query'],
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array( 'year', 'monthnum', 'day' ),
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$redirect_url
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);
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}
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} elseif ( $year && $month && $month > 12 ) {
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$redirect_url = get_year_link( $year );
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$redirect['query'] = _remove_qs_args_if_not_in_url(
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$redirect['query'],
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array( 'year', 'monthnum' ),
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$redirect_url
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);
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}
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// Strip off non-existing <!--nextpage--> links from single posts or pages.
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if ( get_query_var( 'page' ) ) {
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$post_id = 0;
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if ( $wp_query->queried_object instanceof WP_Post ) {
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$post_id = $wp_query->queried_object->ID;
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} elseif ( $wp_query->post ) {
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$post_id = $wp_query->post->ID;
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}
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if ( $post_id ) {
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$redirect_url = get_permalink( $post_id );
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$redirect_obj = get_post( $post_id );
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$redirect['path'] = rtrim( $redirect['path'], (int) get_query_var( 'page' ) . '/' );
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$redirect['query'] = remove_query_arg( 'page', $redirect['query'] );
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}
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}
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if ( ! $redirect_url ) {
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$redirect_url = redirect_guess_404_permalink();
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if ( $redirect_url ) {
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$redirect['query'] = _remove_qs_args_if_not_in_url(
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$redirect['query'],
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array( 'page', 'feed', 'p', 'page_id', 'attachment_id', 'pagename', 'name', 'post_type' ),
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$redirect_url
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);
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}
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}
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} elseif ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks() ) {
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// Rewriting of old ?p=X, ?m=2004, ?m=200401, ?m=20040101.
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if ( is_attachment()
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&& ! array_diff( array_keys( $wp->query_vars ), array( 'attachment', 'attachment_id' ) )
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&& ! $redirect_url
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) {
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if ( ! empty( $_GET['attachment_id'] ) ) {
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$redirect_url = get_attachment_link( get_query_var( 'attachment_id' ) );
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$redirect_obj = get_post( get_query_var( 'attachment_id' ) );
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( 'attachment_id', $redirect['query'] );
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}
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} else {
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$redirect_url = get_attachment_link();
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$redirect_obj = get_post();
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}
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} elseif ( is_single() && ! empty( $_GET['p'] ) && ! $redirect_url ) {
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$redirect_url = get_permalink( get_query_var( 'p' ) );
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$redirect_obj = get_post( get_query_var( 'p' ) );
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( array( 'p', 'post_type' ), $redirect['query'] );
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}
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} elseif ( is_single() && ! empty( $_GET['name'] ) && ! $redirect_url ) {
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$redirect_url = get_permalink( $wp_query->get_queried_object_id() );
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$redirect_obj = get_post( $wp_query->get_queried_object_id() );
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( 'name', $redirect['query'] );
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}
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} elseif ( is_page() && ! empty( $_GET['page_id'] ) && ! $redirect_url ) {
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$redirect_url = get_permalink( get_query_var( 'page_id' ) );
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$redirect_obj = get_post( get_query_var( 'page_id' ) );
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( 'page_id', $redirect['query'] );
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}
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} elseif ( is_page() && ! is_feed() && ! $redirect_url
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&& 'page' === get_option( 'show_on_front' ) && get_queried_object_id() === (int) get_option( 'page_on_front' )
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) {
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$redirect_url = home_url( '/' );
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} elseif ( is_home() && ! empty( $_GET['page_id'] ) && ! $redirect_url
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&& 'page' === get_option( 'show_on_front' ) && get_query_var( 'page_id' ) === (int) get_option( 'page_for_posts' )
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) {
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$redirect_url = get_permalink( get_option( 'page_for_posts' ) );
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$redirect_obj = get_post( get_option( 'page_for_posts' ) );
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( 'page_id', $redirect['query'] );
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}
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} elseif ( ! empty( $_GET['m'] ) && ( is_year() || is_month() || is_day() ) ) {
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$m = get_query_var( 'm' );
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switch ( strlen( $m ) ) {
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case 4: // Yearly.
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$redirect_url = get_year_link( $m );
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break;
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case 6: // Monthly.
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$redirect_url = get_month_link( substr( $m, 0, 4 ), substr( $m, 4, 2 ) );
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break;
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case 8: // Daily.
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$redirect_url = get_day_link( substr( $m, 0, 4 ), substr( $m, 4, 2 ), substr( $m, 6, 2 ) );
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break;
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}
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( 'm', $redirect['query'] );
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}
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// Now moving on to non ?m=X year/month/day links.
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} elseif ( is_date() ) {
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$year = get_query_var( 'year' );
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$month = get_query_var( 'monthnum' );
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$day = get_query_var( 'day' );
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if ( is_day() && $year && $month && ! empty( $_GET['day'] ) ) {
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$redirect_url = get_day_link( $year, $month, $day );
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( array( 'year', 'monthnum', 'day' ), $redirect['query'] );
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}
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} elseif ( is_month() && $year && ! empty( $_GET['monthnum'] ) ) {
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$redirect_url = get_month_link( $year, $month );
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( array( 'year', 'monthnum' ), $redirect['query'] );
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}
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} elseif ( is_year() && ! empty( $_GET['year'] ) ) {
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$redirect_url = get_year_link( $year );
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( 'year', $redirect['query'] );
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}
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}
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} elseif ( is_author() && ! empty( $_GET['author'] ) && preg_match( '|^[0-9]+$|', $_GET['author'] ) ) {
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$author = get_userdata( get_query_var( 'author' ) );
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if ( false !== $author
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&& $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE $wpdb->posts.post_author = %d AND $wpdb->posts.post_status = 'publish' LIMIT 1", $author->ID ) )
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) {
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$redirect_url = get_author_posts_url( $author->ID, $author->user_nicename );
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$redirect_obj = $author;
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|
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if ( $redirect_url ) {
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$redirect['query'] = remove_query_arg( 'author', $redirect['query'] );
|
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}
|
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}
|
||
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} elseif ( is_category() || is_tag() || is_tax() ) { // Terms (tags/categories).
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$term_count = 0;
|
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|
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||
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foreach ( $wp_query->tax_query->queried_terms as $tax_query ) {
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if ( isset( $tax_query['terms'] ) && is_countable( $tax_query['terms'] ) ) {
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$term_count += count( $tax_query['terms'] );
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}
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}
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|
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$obj = $wp_query->get_queried_object();
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||
|
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||
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if ( $term_count <= 1 && ! empty( $obj->term_id ) ) {
|
||
|
$tax_url = get_term_link( (int) $obj->term_id, $obj->taxonomy );
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||
|
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||
|
if ( $tax_url && ! is_wp_error( $tax_url ) ) {
|
||
|
if ( ! empty( $redirect['query'] ) ) {
|
||
|
// Strip taxonomy query vars off the URL.
|
||
|
$qv_remove = array( 'term', 'taxonomy' );
|
||
|
|
||
|
if ( is_category() ) {
|
||
|
$qv_remove[] = 'category_name';
|
||
|
$qv_remove[] = 'cat';
|
||
|
} elseif ( is_tag() ) {
|
||
|
$qv_remove[] = 'tag';
|
||
|
$qv_remove[] = 'tag_id';
|
||
|
} else {
|
||
|
// Custom taxonomies will have a custom query var, remove those too.
|
||
|
$tax_obj = get_taxonomy( $obj->taxonomy );
|
||
|
if ( false !== $tax_obj->query_var ) {
|
||
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$qv_remove[] = $tax_obj->query_var;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$rewrite_vars = array_diff( array_keys( $wp_query->query ), array_keys( $_GET ) );
|
||
|
|
||
|
// Check to see if all the query vars are coming from the rewrite, none are set via $_GET.
|
||
|
if ( ! array_diff( $rewrite_vars, array_keys( $_GET ) ) ) {
|
||
|
// Remove all of the per-tax query vars.
|
||
|
$redirect['query'] = remove_query_arg( $qv_remove, $redirect['query'] );
|
||
|
|
||
|
// Create the destination URL for this taxonomy.
|
||
|
$tax_url = parse_url( $tax_url );
|
||
|
|
||
|
if ( ! empty( $tax_url['query'] ) ) {
|
||
|
// Taxonomy accessible via ?taxonomy=...&term=... or any custom query var.
|
||
|
parse_str( $tax_url['query'], $query_vars );
|
||
|
$redirect['query'] = add_query_arg( $query_vars, $redirect['query'] );
|
||
|
} else {
|
||
|
// Taxonomy is accessible via a "pretty URL".
|
||
|
$redirect['path'] = $tax_url['path'];
|
||
|
}
|
||
|
} else {
|
||
|
// Some query vars are set via $_GET. Unset those from $_GET that exist via the rewrite.
|
||
|
foreach ( $qv_remove as $_qv ) {
|
||
|
if ( isset( $rewrite_vars[ $_qv ] ) ) {
|
||
|
$redirect['query'] = remove_query_arg( $_qv, $redirect['query'] );
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
} elseif ( is_single() && strpos( $wp_rewrite->permalink_structure, '%category%' ) !== false ) {
|
||
|
$category_name = get_query_var( 'category_name' );
|
||
|
|
||
|
if ( $category_name ) {
|
||
|
$category = get_category_by_path( $category_name );
|
||
|
|
||
|
if ( ! $category || is_wp_error( $category )
|
||
|
|| ! has_term( $category->term_id, 'category', $wp_query->get_queried_object_id() )
|
||
|
) {
|
||
|
$redirect_url = get_permalink( $wp_query->get_queried_object_id() );
|
||
|
$redirect_obj = get_post( $wp_query->get_queried_object_id() );
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Post paging.
|
||
|
if ( is_singular() && get_query_var( 'page' ) ) {
|
||
|
$page = get_query_var( 'page' );
|
||
|
|
||
|
if ( ! $redirect_url ) {
|
||
|
$redirect_url = get_permalink( get_queried_object_id() );
|
||
|
$redirect_obj = get_post( get_queried_object_id() );
|
||
|
}
|
||
|
|
||
|
if ( $page > 1 ) {
|
||
|
$redirect_url = trailingslashit( $redirect_url );
|
||
|
|
||
|
if ( is_front_page() ) {
|
||
|
$redirect_url .= user_trailingslashit( "$wp_rewrite->pagination_base/$page", 'paged' );
|
||
|
} else {
|
||
|
$redirect_url .= user_trailingslashit( $page, 'single_paged' );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$redirect['query'] = remove_query_arg( 'page', $redirect['query'] );
|
||
|
}
|
||
|
|
||
|
if ( get_query_var( 'sitemap' ) ) {
|
||
|
$redirect_url = get_sitemap_url( get_query_var( 'sitemap' ), get_query_var( 'sitemap-subtype' ), get_query_var( 'paged' ) );
|
||
|
$redirect['query'] = remove_query_arg( array( 'sitemap', 'sitemap-subtype', 'paged' ), $redirect['query'] );
|
||
|
} elseif ( get_query_var( 'paged' ) || is_feed() || get_query_var( 'cpage' ) ) {
|
||
|
// Paging and feeds.
|
||
|
$paged = get_query_var( 'paged' );
|
||
|
$feed = get_query_var( 'feed' );
|
||
|
$cpage = get_query_var( 'cpage' );
|
||
|
|
||
|
while ( preg_match( "#/$wp_rewrite->pagination_base/?[0-9]+?(/+)?$#", $redirect['path'] )
|
||
|
|| preg_match( '#/(comments/?)?(feed|rss2?|rdf|atom)(/+)?$#', $redirect['path'] )
|
||
|
|| preg_match( "#/{$wp_rewrite->comments_pagination_base}-[0-9]+(/+)?$#", $redirect['path'] )
|
||
|
) {
|
||
|
// Strip off any existing paging.
|
||
|
$redirect['path'] = preg_replace( "#/$wp_rewrite->pagination_base/?[0-9]+?(/+)?$#", '/', $redirect['path'] );
|
||
|
// Strip off feed endings.
|
||
|
$redirect['path'] = preg_replace( '#/(comments/?)?(feed|rss2?|rdf|atom)(/+|$)#', '/', $redirect['path'] );
|
||
|
// Strip off any existing comment paging.
|
||
|
$redirect['path'] = preg_replace( "#/{$wp_rewrite->comments_pagination_base}-[0-9]+?(/+)?$#", '/', $redirect['path'] );
|
||
|
}
|
||
|
|
||
|
$addl_path = '';
|
||
|
$default_feed = get_default_feed();
|
||
|
|
||
|
if ( is_feed() && in_array( $feed, $wp_rewrite->feeds, true ) ) {
|
||
|
$addl_path = ! empty( $addl_path ) ? trailingslashit( $addl_path ) : '';
|
||
|
|
||
|
if ( ! is_singular() && get_query_var( 'withcomments' ) ) {
|
||
|
$addl_path .= 'comments/';
|
||
|
}
|
||
|
|
||
|
if ( ( 'rss' === $default_feed && 'feed' === $feed ) || 'rss' === $feed ) {
|
||
|
$format = ( 'rss2' === $default_feed ) ? '' : 'rss2';
|
||
|
} else {
|
||
|
$format = ( $default_feed === $feed || 'feed' === $feed ) ? '' : $feed;
|
||
|
}
|
||
|
|
||
|
$addl_path .= user_trailingslashit( 'feed/' . $format, 'feed' );
|
||
|
|
||
|
$redirect['query'] = remove_query_arg( 'feed', $redirect['query'] );
|
||
|
} elseif ( is_feed() && 'old' === $feed ) {
|
||
|
$old_feed_files = array(
|
||
|
'wp-atom.php' => 'atom',
|
||
|
'wp-commentsrss2.php' => 'comments_rss2',
|
||
|
'wp-feed.php' => $default_feed,
|
||
|
'wp-rdf.php' => 'rdf',
|
||
|
'wp-rss.php' => 'rss2',
|
||
|
'wp-rss2.php' => 'rss2',
|
||
|
);
|
||
|
|
||
|
if ( isset( $old_feed_files[ basename( $redirect['path'] ) ] ) ) {
|
||
|
$redirect_url = get_feed_link( $old_feed_files[ basename( $redirect['path'] ) ] );
|
||
|
|
||
|
wp_redirect( $redirect_url, 301 );
|
||
|
die();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if ( $paged > 0 ) {
|
||
|
$redirect['query'] = remove_query_arg( 'paged', $redirect['query'] );
|
||
|
|
||
|
if ( ! is_feed() ) {
|
||
|
if ( ! is_single() ) {
|
||
|
$addl_path = ! empty( $addl_path ) ? trailingslashit( $addl_path ) : '';
|
||
|
|
||
|
if ( $paged > 1 ) {
|
||
|
$addl_path .= user_trailingslashit( "$wp_rewrite->pagination_base/$paged", 'paged' );
|
||
|
}
|
||
|
}
|
||
|
} elseif ( $paged > 1 ) {
|
||
|
$redirect['query'] = add_query_arg( 'paged', $paged, $redirect['query'] );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$default_comments_page = get_option( 'default_comments_page' );
|
||
|
|
||
|
if ( get_option( 'page_comments' )
|
||
|
&& ( 'newest' === $default_comments_page && $cpage > 0
|
||
|
|| 'newest' !== $default_comments_page && $cpage > 1 )
|
||
|
) {
|
||
|
$addl_path = ( ! empty( $addl_path ) ? trailingslashit( $addl_path ) : '' );
|
||
|
$addl_path .= user_trailingslashit( $wp_rewrite->comments_pagination_base . '-' . $cpage, 'commentpaged' );
|
||
|
|
||
|
$redirect['query'] = remove_query_arg( 'cpage', $redirect['query'] );
|
||
|
}
|
||
|
|
||
|
// Strip off trailing /index.php/.
|
||
|
$redirect['path'] = preg_replace( '|/' . preg_quote( $wp_rewrite->index, '|' ) . '/?$|', '/', $redirect['path'] );
|
||
|
$redirect['path'] = user_trailingslashit( $redirect['path'] );
|
||
|
|
||
|
if ( ! empty( $addl_path )
|
||
|
&& $wp_rewrite->using_index_permalinks()
|
||
|
&& strpos( $redirect['path'], '/' . $wp_rewrite->index . '/' ) === false
|
||
|
) {
|
||
|
$redirect['path'] = trailingslashit( $redirect['path'] ) . $wp_rewrite->index . '/';
|
||
|
}
|
||
|
|
||
|
if ( ! empty( $addl_path ) ) {
|
||
|
$redirect['path'] = trailingslashit( $redirect['path'] ) . $addl_path;
|
||
|
}
|
||
|
|
||
|
$redirect_url = $redirect['scheme'] . '://' . $redirect['host'] . $redirect['path'];
|
||
|
}
|
||
|
|
||
|
if ( 'wp-register.php' === basename( $redirect['path'] ) ) {
|
||
|
if ( is_multisite() ) {
|
||
|
/** This filter is documented in wp-login.php */
|
||
|
$redirect_url = apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) );
|
||
|
} else {
|
||
|
$redirect_url = wp_registration_url();
|
||
|
}
|
||
|
|
||
|
wp_redirect( $redirect_url, 301 );
|
||
|
die();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] );
|
||
|
|
||
|
// Tack on any additional query vars.
|
||
|
if ( $redirect_url && ! empty( $redirect['query'] ) ) {
|
||
|
parse_str( $redirect['query'], $_parsed_query );
|
||
|
$redirect = parse_url( $redirect_url );
|
||
|
|
||
|
if ( ! empty( $_parsed_query['name'] ) && ! empty( $redirect['query'] ) ) {
|
||
|
parse_str( $redirect['query'], $_parsed_redirect_query );
|
||
|
|
||
|
if ( empty( $_parsed_redirect_query['name'] ) ) {
|
||
|
unset( $_parsed_query['name'] );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$_parsed_query = array_combine(
|
||
|
rawurlencode_deep( array_keys( $_parsed_query ) ),
|
||
|
rawurlencode_deep( array_values( $_parsed_query ) )
|
||
|
);
|
||
|
|
||
|
$redirect_url = add_query_arg( $_parsed_query, $redirect_url );
|
||
|
}
|
||
|
|
||
|
if ( $redirect_url ) {
|
||
|
$redirect = parse_url( $redirect_url );
|
||
|
}
|
||
|
|
||
|
// www.example.com vs. example.com
|
||
|
$user_home = parse_url( home_url() );
|
||
|
|
||
|
if ( ! empty( $user_home['host'] ) ) {
|
||
|
$redirect['host'] = $user_home['host'];
|
||
|
}
|
||
|
|
||
|
if ( empty( $user_home['path'] ) ) {
|
||
|
$user_home['path'] = '/';
|
||
|
}
|
||
|
|
||
|
// Handle ports.
|
||
|
if ( ! empty( $user_home['port'] ) ) {
|
||
|
$redirect['port'] = $user_home['port'];
|
||
|
} else {
|
||
|
unset( $redirect['port'] );
|
||
|
}
|
||
|
|
||
|
// Trailing /index.php.
|
||
|
$redirect['path'] = preg_replace( '|/' . preg_quote( $wp_rewrite->index, '|' ) . '/*?$|', '/', $redirect['path'] );
|
||
|
|
||
|
$punctuation_pattern = implode(
|
||
|
'|',
|
||
|
array_map(
|
||
|
'preg_quote',
|
||
|
array(
|
||
|
' ',
|
||
|
'%20', // Space.
|
||
|
'!',
|
||
|
'%21', // Exclamation mark.
|
||
|
'"',
|
||
|
'%22', // Double quote.
|
||
|
"'",
|
||
|
'%27', // Single quote.
|
||
|
'(',
|
||
|
'%28', // Opening bracket.
|
||
|
')',
|
||
|
'%29', // Closing bracket.
|
||
|
',',
|
||
|
'%2C', // Comma.
|
||
|
'.',
|
||
|
'%2E', // Period.
|
||
|
';',
|
||
|
'%3B', // Semicolon.
|
||
|
'{',
|
||
|
'%7B', // Opening curly bracket.
|
||
|
'}',
|
||
|
'%7D', // Closing curly bracket.
|
||
|
'%E2%80%9C', // Opening curly quote.
|
||
|
'%E2%80%9D', // Closing curly quote.
|
||
|
)
|
||
|
)
|
||
|
);
|
||
|
|
||
|
// Remove trailing spaces and end punctuation from the path.
|
||
|
$redirect['path'] = preg_replace( "#($punctuation_pattern)+$#", '', $redirect['path'] );
|
||
|
|
||
|
if ( ! empty( $redirect['query'] ) ) {
|
||
|
// Remove trailing spaces and end punctuation from certain terminating query string args.
|
||
|
$redirect['query'] = preg_replace( "#((^|&)(p|page_id|cat|tag)=[^&]*?)($punctuation_pattern)+$#", '$1', $redirect['query'] );
|
||
|
|
||
|
// Clean up empty query strings.
|
||
|
$redirect['query'] = trim( preg_replace( '#(^|&)(p|page_id|cat|tag)=?(&|$)#', '&', $redirect['query'] ), '&' );
|
||
|
|
||
|
// Redirect obsolete feeds.
|
||
|
$redirect['query'] = preg_replace( '#(^|&)feed=rss(&|$)#', '$1feed=rss2$2', $redirect['query'] );
|
||
|
|
||
|
// Remove redundant leading ampersands.
|
||
|
$redirect['query'] = preg_replace( '#^\??&*?#', '', $redirect['query'] );
|
||
|
}
|
||
|
|
||
|
// Strip /index.php/ when we're not using PATHINFO permalinks.
|
||
|
if ( ! $wp_rewrite->using_index_permalinks() ) {
|
||
|
$redirect['path'] = str_replace( '/' . $wp_rewrite->index . '/', '/', $redirect['path'] );
|
||
|
}
|
||
|
|
||
|
// Trailing slashes.
|
||
|
if ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks()
|
||
|
&& ! is_404() && ( ! is_front_page() || is_front_page() && get_query_var( 'paged' ) > 1 )
|
||
|
) {
|
||
|
$user_ts_type = '';
|
||
|
|
||
|
if ( get_query_var( 'paged' ) > 0 ) {
|
||
|
$user_ts_type = 'paged';
|
||
|
} else {
|
||
|
foreach ( array( 'single', 'category', 'page', 'day', 'month', 'year', 'home' ) as $type ) {
|
||
|
$func = 'is_' . $type;
|
||
|
if ( call_user_func( $func ) ) {
|
||
|
$user_ts_type = $type;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$redirect['path'] = user_trailingslashit( $redirect['path'], $user_ts_type );
|
||
|
} elseif ( is_front_page() ) {
|
||
|
$redirect['path'] = trailingslashit( $redirect['path'] );
|
||
|
}
|
||
|
|
||
|
// Remove trailing slash for robots.txt or sitemap requests.
|
||
|
if ( is_robots()
|
||
|
|| ! empty( get_query_var( 'sitemap' ) ) || ! empty( get_query_var( 'sitemap-stylesheet' ) )
|
||
|
) {
|
||
|
$redirect['path'] = untrailingslashit( $redirect['path'] );
|
||
|
}
|
||
|
|
||
|
// Strip multiple slashes out of the URL.
|
||
|
if ( strpos( $redirect['path'], '//' ) > -1 ) {
|
||
|
$redirect['path'] = preg_replace( '|/+|', '/', $redirect['path'] );
|
||
|
}
|
||
|
|
||
|
// Always trailing slash the Front Page URL.
|
||
|
if ( trailingslashit( $redirect['path'] ) === trailingslashit( $user_home['path'] ) ) {
|
||
|
$redirect['path'] = trailingslashit( $redirect['path'] );
|
||
|
}
|
||
|
|
||
|
$original_host_low = strtolower( $original['host'] );
|
||
|
$redirect_host_low = strtolower( $redirect['host'] );
|
||
|
|
||
|
// Ignore differences in host capitalization, as this can lead to infinite redirects.
|
||
|
// Only redirect no-www <=> yes-www.
|
||
|
if ( $original_host_low === $redirect_host_low
|
||
|
|| ( 'www.' . $original_host_low !== $redirect_host_low
|
||
|
&& 'www.' . $redirect_host_low !== $original_host_low )
|
||
|
) {
|
||
|
$redirect['host'] = $original['host'];
|
||
|
}
|
||
|
|
||
|
$compare_original = array( $original['host'], $original['path'] );
|
||
|
|
||
|
if ( ! empty( $original['port'] ) ) {
|
||
|
$compare_original[] = $original['port'];
|
||
|
}
|
||
|
|
||
|
if ( ! empty( $original['query'] ) ) {
|
||
|
$compare_original[] = $original['query'];
|
||
|
}
|
||
|
|
||
|
$compare_redirect = array( $redirect['host'], $redirect['path'] );
|
||
|
|
||
|
if ( ! empty( $redirect['port'] ) ) {
|
||
|
$compare_redirect[] = $redirect['port'];
|
||
|
}
|
||
|
|
||
|
if ( ! empty( $redirect['query'] ) ) {
|
||
|
$compare_redirect[] = $redirect['query'];
|
||
|
}
|
||
|
|
||
|
if ( $compare_original !== $compare_redirect ) {
|
||
|
$redirect_url = $redirect['scheme'] . '://' . $redirect['host'];
|
||
|
|
||
|
if ( ! empty( $redirect['port'] ) ) {
|
||
|
$redirect_url .= ':' . $redirect['port'];
|
||
|
}
|
||
|
|
||
|
$redirect_url .= $redirect['path'];
|
||
|
|
||
|
if ( ! empty( $redirect['query'] ) ) {
|
||
|
$redirect_url .= '?' . $redirect['query'];
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if ( ! $redirect_url || $redirect_url === $requested_url ) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
// Hex encoded octets are case-insensitive.
|
||
|
if ( false !== strpos( $requested_url, '%' ) ) {
|
||
|
if ( ! function_exists( 'lowercase_octets' ) ) {
|
||
|
/**
|
||
|
* Converts the first hex-encoded octet match to lowercase.
|
||
|
*
|
||
|
* @since 3.1.0
|
||
|
* @ignore
|
||
|
*
|
||
|
* @param array $matches Hex-encoded octet matches for the requested URL.
|
||
|
* @return string Lowercased version of the first match.
|
||
|
*/
|
||
|
function lowercase_octets( $matches ) {
|
||
|
return strtolower( $matches[0] );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
$requested_url = preg_replace_callback( '|%[a-fA-F0-9][a-fA-F0-9]|', 'lowercase_octets', $requested_url );
|
||
|
}
|
||
|
|
||
|
if ( $redirect_obj instanceof WP_Post ) {
|
||
|
$post_status_obj = get_post_status_object( get_post_status( $redirect_obj ) );
|
||
|
/*
|
||
|
* Unset the redirect object and URL if they are not readable by the user.
|
||
|
* This condition is a little confusing as the condition needs to pass if
|
||
|
* the post is not readable by the user. That's why there are ! (not) conditions
|
||
|
* throughout.
|
||
|
*/
|
||
|
if (
|
||
|
// Private post statuses only redirect if the user can read them.
|
||
|
! (
|
||
|
$post_status_obj->private &&
|
||
|
current_user_can( 'read_post', $redirect_obj->ID )
|
||
|
) &&
|
||
|
// For other posts, only redirect if publicly viewable.
|
||
|
! is_post_publicly_viewable( $redirect_obj )
|
||
|
) {
|
||
|
$redirect_obj = false;
|
||
|
$redirect_url = false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Filters the canonical redirect URL.
|
||
|
*
|
||
|
* Returning false to this filter will cancel the redirect.
|
||
|
*
|
||
|
* @since 2.3.0
|
||
|
*
|
||
|
* @param string $redirect_url The redirect URL.
|
||
|
* @param string $requested_url The requested URL.
|
||
|
*/
|
||
|
$redirect_url = apply_filters( 'redirect_canonical', $redirect_url, $requested_url );
|
||
|
|
||
|
// Yes, again -- in case the filter aborted the request.
|
||
|
if ( ! $redirect_url || strip_fragment_from_url( $redirect_url ) === strip_fragment_from_url( $requested_url ) ) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if ( $do_redirect ) {
|
||
|
// Protect against chained redirects.
|
||
|
if ( ! redirect_canonical( $redirect_url, false ) ) {
|
||
|
wp_redirect( $redirect_url, 301 );
|
||
|
exit;
|
||
|
} else {
|
||
|
// Debug.
|
||
|
// die("1: $redirect_url<br />2: " . redirect_canonical( $redirect_url, false ) );
|
||
|
return;
|
||
|
}
|
||
|
} else {
|
||
|
return $redirect_url;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Removes arguments from a query string if they are not present in a URL
|
||
|
* DO NOT use this in plugin code.
|
||
|
*
|
||
|
* @since 3.4.0
|
||
|
* @access private
|
||
|
*
|
||
|
* @param string $query_string
|
||
|
* @param array $args_to_check
|
||
|
* @param string $url
|
||
|
* @return string The altered query string
|
||
|
*/
|
||
|
function _remove_qs_args_if_not_in_url( $query_string, array $args_to_check, $url ) {
|
||
|
$parsed_url = parse_url( $url );
|
||
|
|
||
|
if ( ! empty( $parsed_url['query'] ) ) {
|
||
|
parse_str( $parsed_url['query'], $parsed_query );
|
||
|
|
||
|
foreach ( $args_to_check as $qv ) {
|
||
|
if ( ! isset( $parsed_query[ $qv ] ) ) {
|
||
|
$query_string = remove_query_arg( $qv, $query_string );
|
||
|
}
|
||
|
}
|
||
|
} else {
|
||
|
$query_string = remove_query_arg( $args_to_check, $query_string );
|
||
|
}
|
||
|
|
||
|
return $query_string;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Strips the #fragment from a URL, if one is present.
|
||
|
*
|
||
|
* @since 4.4.0
|
||
|
*
|
||
|
* @param string $url The URL to strip.
|
||
|
* @return string The altered URL.
|
||
|
*/
|
||
|
function strip_fragment_from_url( $url ) {
|
||
|
$parsed_url = wp_parse_url( $url );
|
||
|
|
||
|
if ( ! empty( $parsed_url['host'] ) ) {
|
||
|
$url = '';
|
||
|
|
||
|
if ( ! empty( $parsed_url['scheme'] ) ) {
|
||
|
$url = $parsed_url['scheme'] . ':';
|
||
|
}
|
||
|
|
||
|
$url .= '//' . $parsed_url['host'];
|
||
|
|
||
|
if ( ! empty( $parsed_url['port'] ) ) {
|
||
|
$url .= ':' . $parsed_url['port'];
|
||
|
}
|
||
|
|
||
|
if ( ! empty( $parsed_url['path'] ) ) {
|
||
|
$url .= $parsed_url['path'];
|
||
|
}
|
||
|
|
||
|
if ( ! empty( $parsed_url['query'] ) ) {
|
||
|
$url .= '?' . $parsed_url['query'];
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return $url;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Attempts to guess the correct URL for a 404 request based on query vars.
|
||
|
*
|
||
|
* @since 2.3.0
|
||
|
*
|
||
|
* @global wpdb $wpdb WordPress database abstraction object.
|
||
|
*
|
||
|
* @return string|false The correct URL if one is found. False on failure.
|
||
|
*/
|
||
|
function redirect_guess_404_permalink() {
|
||
|
global $wpdb;
|
||
|
|
||
|
/**
|
||
|
* Filters whether to attempt to guess a redirect URL for a 404 request.
|
||
|
*
|
||
|
* Returning a false value from the filter will disable the URL guessing
|
||
|
* and return early without performing a redirect.
|
||
|
*
|
||
|
* @since 5.5.0
|
||
|
*
|
||
|
* @param bool $do_redirect_guess Whether to attempt to guess a redirect URL
|
||
|
* for a 404 request. Default true.
|
||
|
*/
|
||
|
if ( false === apply_filters( 'do_redirect_guess_404_permalink', true ) ) {
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Short-circuits the redirect URL guessing for 404 requests.
|
||
|
*
|
||
|
* Returning a non-null value from the filter will effectively short-circuit
|
||
|
* the URL guessing, returning the passed value instead.
|
||
|
*
|
||
|
* @since 5.5.0
|
||
|
*
|
||
|
* @param null|string|false $pre Whether to short-circuit guessing the redirect for a 404.
|
||
|
* Default null to continue with the URL guessing.
|
||
|
*/
|
||
|
$pre = apply_filters( 'pre_redirect_guess_404_permalink', null );
|
||
|
if ( null !== $pre ) {
|
||
|
return $pre;
|
||
|
}
|
||
|
|
||
|
if ( get_query_var( 'name' ) ) {
|
||
|
/**
|
||
|
* Filters whether to perform a strict guess for a 404 redirect.
|
||
|
*
|
||
|
* Returning a truthy value from the filter will redirect only exact post_name matches.
|
||
|
*
|
||
|
* @since 5.5.0
|
||
|
*
|
||
|
* @param bool $strict_guess Whether to perform a strict guess. Default false (loose guess).
|
||
|
*/
|
||
|
$strict_guess = apply_filters( 'strict_redirect_guess_404_permalink', false );
|
||
|
|
||
|
if ( $strict_guess ) {
|
||
|
$where = $wpdb->prepare( 'post_name = %s', get_query_var( 'name' ) );
|
||
|
} else {
|
||
|
$where = $wpdb->prepare( 'post_name LIKE %s', $wpdb->esc_like( get_query_var( 'name' ) ) . '%' );
|
||
|
}
|
||
|
|
||
|
// If any of post_type, year, monthnum, or day are set, use them to refine the query.
|
||
|
if ( get_query_var( 'post_type' ) ) {
|
||
|
if ( is_array( get_query_var( 'post_type' ) ) ) {
|
||
|
// phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare
|
||
|
$where .= " AND post_type IN ('" . join( "', '", esc_sql( get_query_var( 'post_type' ) ) ) . "')";
|
||
|
} else {
|
||
|
$where .= $wpdb->prepare( ' AND post_type = %s', get_query_var( 'post_type' ) );
|
||
|
}
|
||
|
} else {
|
||
|
$where .= " AND post_type IN ('" . implode( "', '", get_post_types( array( 'public' => true ) ) ) . "')";
|
||
|
}
|
||
|
|
||
|
if ( get_query_var( 'year' ) ) {
|
||
|
$where .= $wpdb->prepare( ' AND YEAR(post_date) = %d', get_query_var( 'year' ) );
|
||
|
}
|
||
|
if ( get_query_var( 'monthnum' ) ) {
|
||
|
$where .= $wpdb->prepare( ' AND MONTH(post_date) = %d', get_query_var( 'monthnum' ) );
|
||
|
}
|
||
|
if ( get_query_var( 'day' ) ) {
|
||
|
$where .= $wpdb->prepare( ' AND DAYOFMONTH(post_date) = %d', get_query_var( 'day' ) );
|
||
|
}
|
||
|
|
||
|
$publicly_viewable_statuses = array_filter( get_post_stati(), 'is_post_status_viewable' );
|
||
|
// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
|
||
|
$post_id = $wpdb->get_var( "SELECT ID FROM $wpdb->posts WHERE $where AND post_status IN ('" . implode( "', '", esc_sql( $publicly_viewable_statuses ) ) . "')" );
|
||
|
|
||
|
if ( ! $post_id ) {
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
if ( get_query_var( 'feed' ) ) {
|
||
|
return get_post_comments_feed_link( $post_id, get_query_var( 'feed' ) );
|
||
|
} elseif ( get_query_var( 'page' ) > 1 ) {
|
||
|
return trailingslashit( get_permalink( $post_id ) ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' );
|
||
|
} else {
|
||
|
return get_permalink( $post_id );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Redirects a variety of shorthand URLs to the admin.
|
||
|
*
|
||
|
* If a user visits example.com/admin, they'll be redirected to /wp-admin.
|
||
|
* Visiting /login redirects to /wp-login.php, and so on.
|
||
|
*
|
||
|
* @since 3.4.0
|
||
|
*
|
||
|
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
|
||
|
*/
|
||
|
function wp_redirect_admin_locations() {
|
||
|
global $wp_rewrite;
|
||
|
|
||
|
if ( ! ( is_404() && $wp_rewrite->using_permalinks() ) ) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
$admins = array(
|
||
|
home_url( 'wp-admin', 'relative' ),
|
||
|
home_url( 'dashboard', 'relative' ),
|
||
|
home_url( 'admin', 'relative' ),
|
||
|
site_url( 'dashboard', 'relative' ),
|
||
|
site_url( 'admin', 'relative' ),
|
||
|
);
|
||
|
|
||
|
if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $admins, true ) ) {
|
||
|
wp_redirect( admin_url() );
|
||
|
exit;
|
||
|
}
|
||
|
|
||
|
$logins = array(
|
||
|
home_url( 'wp-login.php', 'relative' ),
|
||
|
home_url( 'login', 'relative' ),
|
||
|
site_url( 'login', 'relative' ),
|
||
|
);
|
||
|
|
||
|
if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $logins, true ) ) {
|
||
|
wp_redirect( wp_login_url() );
|
||
|
exit;
|
||
|
}
|
||
|
}
|