按特定类别从数据库中获取博客

Question

我创建了一个包含类别的博客系统我在数据库中有两个 table，table 个博客 blog_id，title，body， category_id 和第二个 table 列 category、category_id。要获取所有类别的博客，我使用此代码并且效果很好。

  $query = ("SELECT blogs_id, title, body, posted_by, category FROM blogs  INNER JOIN categories ON categories.category_id=blogs.category_id  ORDER BY  blogs_id desc LIMIT 10");
 $result = mysql_query($query);
 $result = mysql_query($query) or die("error:".mysql_error());
 while ($row = mysql_fetch_assoc($result)) {
        $title = $row['title'];
        $body = $row['body']; 
        $posted_by = $row['posted_by'];

现在我想按特定类别获取博客，我使用了相同的查询并添加了“where category=that category”它没有用所以我尝试了 category_id 但它也失败了。我的代码是这样的

        $query = ("SELECT blogs_id, title, body, posted_by, category FROM blogs INNER JOIN categories ON categories.category_id=blogs.category_id where category=anycategory ORDER BY blogs_id desc LIMIT 10");

Answer 1

在 where 子句上使用 '。

$query = ("SELECT blogs_id, title, body, posted_by, category 
FROM blogs INNER
JOIN categories ON categories.category_id=blogs.category_id 
where category= 'anycategory'
ORDER BY blogs_id desc LIMIT 10");

和确保在您的table

中有一个table字段调用category

按特定类别从数据库中获取博客

getting blogs from database by specific category

php

mysql

blogs

categories