非插件让wordpress搜索文章标题的方法
wordpress的默认搜索,是自动匹配文章标题和内容的,这样常常搜索到不相关的文章。
如果要使搜索结果更加相关,就需要只匹配文章的标题。
只需要把如下代码加入到主题函数:function.php
function __search_by_title_only( $search, &$wp_query ){ global $wpdb; if ( empty( $search ) ) return $search; // skip processing - no search term in query $q = $wp_query->query_vars; $n = ! empty( $q['exact'] ) ? '' : '%'; $search = $searchand = ''; foreach ( (array) $q['search_terms'] as $term ) { $term = esc_sql( like_escape( $term ) ); $search .= "{$searchand}($wpdb->posts.post_title LIKE '{$n}{$term}{$n}')"; $searchand = ' AND '; } if ( ! empty( $search ) ) { $search = " AND ({$search}) "; if ( ! is_user_logged_in() ) $search .= " AND ($wpdb->posts.post_password = '') "; } return $search;}add_filter( 'posts_search', '__search_by_title_only', 500, 2 );
就可以轻松实现功能。
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