wp_old_slug_redirect()

Description

Hooks fired · 2

2 hooks fire while wp_old_slug_redirect() runs, in this order:

1. 1
   apply_filters( old_slug_redirect_post_id )filterline 1093 (+38 into the body)

   Filters the old slug redirect post ID.

2. 2
   apply_filters( old_slug_redirect_url )filterline 1114 (+59 into the body)

   Filters the old slug redirect URL.

Uses · 11

• is_404()Determines whether the query has resulted in a 404 (returns no results).
• get_query_var()Retrieves the value of a query variable in the WP_Query class.
• is_post_type_hierarchical()Determines whether the post type is hierarchical.
• _find_post_by_old_slug()Find the post ID for redirecting an old slug.
• _find_post_by_old_date()Find the post ID for redirecting an old date.
• apply_filters()Calls the callback functions that have been added to a filter hook.
• get_permalink()Retrieves the full permalink for the current post or post ID.
• user_trailingslashit()Retrieves a trailing-slashed string if the site is set for adding trailing slashes.
• trailingslashit()Appends a trailing slash.
• is_embed()Is the query for an embedded post?
• wp_redirect()Redirects to another page.

Source

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1055function wp_old_slug_redirect() {1056	if ( is_404() && '' !== get_query_var( 'name' ) ) {1057		// Guess the current post type based on the query vars.1058		if ( get_query_var( 'post_type' ) ) {1059			$post_type = get_query_var( 'post_type' );1060		} elseif ( get_query_var( 'attachment' ) ) {1061			$post_type = 'attachment';1062		} elseif ( get_query_var( 'pagename' ) ) {1063			$post_type = 'page';1064		} else {1065			$post_type = 'post';1066		}1067 1068		if ( is_array( $post_type ) ) {1069			if ( count( $post_type ) > 1 ) {1070				return;1071			}1072			$post_type = reset( $post_type );1073		}1074 1075		// Do not attempt redirect for hierarchical post types.1076		if ( is_post_type_hierarchical( $post_type ) ) {1077			return;1078		}1079 1080		$id = _find_post_by_old_slug( $post_type );1081 1082		if ( ! $id ) {1083			$id = _find_post_by_old_date( $post_type );1084		}1085 1086		/**1087		 * Filters the old slug redirect post ID.1088		 *1089		 * @since 4.9.31090		 *1091		 * @param int $id The redirect post ID.1092		 */1093		$id = apply_filters( 'old_slug_redirect_post_id', $id );1094 1095		if ( ! $id ) {1096			return;1097		}1098 1099		$link = get_permalink( $id );1100 1101		if ( get_query_var( 'paged' ) > 1 ) {1102			$link = user_trailingslashit( trailingslashit( $link ) . 'page/' . get_query_var( 'paged' ) );1103		} elseif ( is_embed() ) {1104			$link = user_trailingslashit( trailingslashit( $link ) . 'embed' );1105		}1106 1107		/**1108		 * Filters the old slug redirect URL.1109		 *1110		 * @since 4.4.01111		 *1112		 * @param string $link The redirect URL.1113		 */1114		$link = apply_filters( 'old_slug_redirect_url', $link );1115 1116		if ( ! $link ) {1117			return;1118		}1119 1120		wp_redirect( $link, 301 ); // Permanent redirect.1121		exit;1122	}1123}

History

Introduced in 2.1.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.0.4 tag, from src/wp-includes/query.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

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