Home > Backend Development > PHP Tutorial > Problems and solutions when using the $wpdb class of wordpress to read the mysql database and do ajax, wordpresswpdb_PHP tutorial

Problems and solutions when using the $wpdb class of wordpress to read the mysql database and do ajax, wordpresswpdb_PHP tutorial

WBOY
Release: 2016-07-12 09:07:40
Original
1025 people have browsed it

使用wordpress的$wpdb类读mysql数据库做ajax时出现的问题及解决,wordpresswpdb

无聊做了个www.jiazhuangma.com,技术不过关写不好后台,就想直接读wordpress里的数据。做ajax读后台数据时在网上随便搜了一段代码使用wordpress $wpdb类读mysql数据库,就是这么一随便,搜到了别人的去头去尾的code,开始了我的改错之旅。

主要问题有:

1,non-object

2,json中汉字,/被转码

3,chrome可以正常访问php文件,ie显示http 404,ajax时头部显示404,但是响应正文正确,是我想要的json。

转载请注明http://www.cumt.top/blog/?p=162

 

先贴上网上搜到的代码:

<?php

global $wpdb;

$a = $wpdb->get_results(&ldquo;SELECT ID,post_title FROM wp_posts &Prime;);
echo json_encode($a );
?>
Copy after login

  

这时会报错,non-object;

网上有人说可以添加require_once(‘wp-blog-header.php’);那么恭喜你中奖了,你会发现chrome可以正常访问php文件,ie显示http 404,ajax时头部显示404,但是响应正文正确。

修改为require_once(‘wp-config.php’);后正常,

这时得到的json是转码后的需要将echo json_encode($a );

修改为echo str_replace(“\\/”, “/”, json_encode($a,JSON_UNESCAPED_UNICODE ));结果才正确

最终结果:

<?php

require_once(&lsquo;wp-config.php&rsquo;);
global $wpdb;

$a = $wpdb->get_results(&ldquo;SELECT wp_posts.ID,wp_posts.post_title,wp_posts.guid FROM wp_posts inner join wp_term_relationships on wp_term_relationships.object_id=wp_posts.ID where wp_term_relationships.term_taxonomy_id=3 ORDER BY wp_term_relationships.object_id DESC LIMIT 5&Prime;);
echo str_replace(&ldquo;\\/&rdquo;, &ldquo;/&rdquo;, json_encode($a,JSON_UNESCAPED_UNICODE ));
?>
Copy after login

  转载请注明http://www.cumt.top/blog/?p=162

www.bkjia.comtruehttp://www.bkjia.com/PHPjc/1059473.htmlTechArticle使用wordpress的$wpdb类读mysql数据库做ajax时出现的问题及解决,wordpresswpdb 无聊做了个www.jiazhuangma.com,技术不过关写不好后台,就想直接读w...
Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template