PHP/MySQL - 搜索查询 [英] PHP / MySQL - Search query

问题描述

我需要帮助对评论进行搜索查询(针对 WordPress 网站).

I need help making a search query for comments (it's for a WordPress site).

评论以这种方式检索 - 如果用户已登录:

the comments are retrieved this way- if user is logged in:

       $comments = $wpdb->get_results($wpdb->prepare("
       SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d
       AND (comment_approved = '1' OR (user_id = %d AND comment_approved = '0'))
       ORDER BY comment_date_gmt", $post->ID, $user_ID));

如果不是:

       $comments = $wpdb->get_results($wpdb->prepare("
       SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d
       AND (comment_approved = '1' OR (comment_author = %s
         AND comment_author_email = %s AND comment_approved = '0'))
       ORDER BY comment_date_gmt",
       $post->ID, wp_specialchars_decode($comment_author,ENT_QUOTES),
       $comment_author_email));

那么我如何过滤包含特定搜索字符串的评论，例如 $_GET['search_query'] ?

so I how can I filter comments that contain a specific search string, like $_GET['search_query'] ?

这是 WP 的数据库结构.我要查找的搜索字符串在 comment_content

this is WP's database structure. The search string I'm looking for is in comment_content

推荐答案

use LIKE

 $comments = $wpdb->get_results($wpdb->prepare("
       SELECT * FROM $wpdb->comments WHERE comment_content LIKE ('%$_GET['search_query']%')
and comment_post_ID = %d
       AND (comment_approved = '1' OR (user_id = %d AND comment_approved = '0'))
       ORDER BY comment_date_gmt", $post->ID, $user_ID));

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