如何在wordpress搜索栏中更改搜索操作？

Question

创建一个新帖子并发布它.

标题是my test for search,内容如下:

no host route

检查wordpress数据库中发生了什么.

 select post_title from wp_posts
     where post_content like "%no%"
       and post_content like "%route%"
       and post_content like "%to%"
       and post_content like "%host%";

命名的帖子my test for search不在select的结果中.
键入no route to hostwordpress搜索栏,然后单击"输入".命名的帖子my test for search显示为结果.

我找到了网页的原因to,在左上角,有一个单词Customize包含搜索到的单词to.
如何在wordpress serach栏中更改此类搜索操作？
我想在wordpress saerch bar中进行搜索行为,例如,当您键入时no route to host,等于以下sql命令.

select post_title from wp_posts where post_content like "%no%route%to%host%";

我的wordpress中的所有插件.

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SyntaxHighlighter Evolved

Answer 1

SQL WHERE 子句中添加了以下内容wp-includes/class-wp-query.php:1306：

<?php
// wp-includes/class-wp-query.php:~1306

foreach ( $q['search_terms'] as $term ) {
    //...
    $like = $n . $wpdb->esc_like( $term ) . $n;
    $search .= $wpdb->prepare( "{$searchand}(({$wpdb->posts}.post_title $like_op %s) $andor_op ({$wpdb->posts}.post_excerpt $like_op %s) $andor_op ({$wpdb->posts}.post_content $like_op %s))", $like, $like, $like );
    // ...

因此，我会挂接到pre_get_posts, 并将查询的单词作为显式“ search_terms”提供，因为它们被添加到该子句中，并且LIKE正如您所说的那样使用修饰符！

所以，我们可能会做这样的事情：

<?php
// functions.php

function fuzzify_query(\WP_Query $q) {
    if (true === $q->is_search()
        && true === property_exists($q, 'query')
        && true === key_exists('s', $q->query)
    ) {
        $original_query = $q->query['s'];
        $words          = explode(' ', $original_query);
        $fuzzy_words    = array_map(
            function($word) {
                return '%'.$word.'%';
            },
            $words
        );

        $q->query_vars['search_terms'] = $fuzzy_words;

        return $q;
    }

    return $q;
}

 add_action('pre_get_posts', 'fuzzify_query', 100); // Or whatever priority your fuzziness requires!