Summery Summery
Resolve numeric slugs that collide with date permalinks.
Syntax Syntax
Description Description
Permalinks of posts with numeric slugs can sometimes look to WP_Query::parse_query() like a date archive, as when your permalink structure is /%year%/%postname%/
and a post with post_name ’05’ has the URL /2015/05/
.
This function detects conflicts of this type and resolves them in favor of the post permalink.
Note that, since 4.3.0, wp_unique_post_slug() prevents the creation of post slugs that would result in a date archive conflict. The resolution performed in this function is primarily for legacy content, as well as cases when the admin has changed the site’s permalink structure in a way that introduces URL conflicts.
Parameters Parameters
- $query_vars
-
(Optional) Query variables for setting up the loop, as determined in WP::parse_request().
Default value: array()
Return Return
(array) Returns the original array of query vars, with date/post conflicts resolved.
Source Source
File: wp-includes/rewrite.php
function wp_resolve_numeric_slug_conflicts( $query_vars = array() ) { if ( ! isset( $query_vars['year'] ) && ! isset( $query_vars['monthnum'] ) && ! isset( $query_vars['day'] ) ) { return $query_vars; } // Identify the 'postname' position in the permastruct array. $permastructs = array_values( array_filter( explode( '/', get_option( 'permalink_structure' ) ) ) ); $postname_index = array_search( '%postname%', $permastructs, true ); if ( false === $postname_index ) { return $query_vars; } /* * A numeric slug could be confused with a year, month, or day, depending on position. To account for * the possibility of post pagination (eg 2015/2 for the second page of a post called '2015'), our * `is_*` checks are generous: check for year-slug clashes when `is_year` *or* `is_month`, and check * for month-slug clashes when `is_month` *or* `is_day`. */ $compare = ''; if ( 0 === $postname_index && ( isset( $query_vars['year'] ) || isset( $query_vars['monthnum'] ) ) ) { $compare = 'year'; } elseif ( $postname_index && '%year%' === $permastructs[ $postname_index - 1 ] && ( isset( $query_vars['monthnum'] ) || isset( $query_vars['day'] ) ) ) { $compare = 'monthnum'; } elseif ( $postname_index && '%monthnum%' === $permastructs[ $postname_index - 1 ] && isset( $query_vars['day'] ) ) { $compare = 'day'; } if ( ! $compare ) { return $query_vars; } // This is the potentially clashing slug. $value = $query_vars[ $compare ]; $post = get_page_by_path( $value, OBJECT, 'post' ); if ( ! ( $post instanceof WP_Post ) ) { return $query_vars; } // If the date of the post doesn't match the date specified in the URL, resolve to the date archive. if ( preg_match( '/^([0-9]{4})\-([0-9]{2})/', $post->post_date, $matches ) && isset( $query_vars['year'] ) && ( 'monthnum' === $compare || 'day' === $compare ) ) { // $matches[1] is the year the post was published. if ( intval( $query_vars['year'] ) !== intval( $matches[1] ) ) { return $query_vars; } // $matches[2] is the month the post was published. if ( 'day' === $compare && isset( $query_vars['monthnum'] ) && intval( $query_vars['monthnum'] ) !== intval( $matches[2] ) ) { return $query_vars; } } /* * If the located post contains nextpage pagination, then the URL chunk following postname may be * intended as the page number. Verify that it's a valid page before resolving to it. */ $maybe_page = ''; if ( 'year' === $compare && isset( $query_vars['monthnum'] ) ) { $maybe_page = $query_vars['monthnum']; } elseif ( 'monthnum' === $compare && isset( $query_vars['day'] ) ) { $maybe_page = $query_vars['day']; } // Bug found in #11694 - 'page' was returning '/4'. $maybe_page = (int) trim( $maybe_page, '/' ); $post_page_count = substr_count( $post->post_content, '<!--nextpage-->' ) + 1; // If the post doesn't have multiple pages, but a 'page' candidate is found, resolve to the date archive. if ( 1 === $post_page_count && $maybe_page ) { return $query_vars; } // If the post has multiple pages and the 'page' number isn't valid, resolve to the date archive. if ( $post_page_count > 1 && $maybe_page > $post_page_count ) { return $query_vars; } // If we've gotten to this point, we have a slug/date clash. First, adjust for nextpage. if ( '' !== $maybe_page ) { $query_vars['page'] = intval( $maybe_page ); } // Next, unset autodetected date-related query vars. unset( $query_vars['year'] ); unset( $query_vars['monthnum'] ); unset( $query_vars['day'] ); // Then, set the identified post. $query_vars['name'] = $post->post_name; // Finally, return the modified query vars. return $query_vars; }
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Changelog Changelog
Version | Description |
---|---|
4.3.0 | Introduced. |