php - MYSQL查询错误

Question

我正在尝试使用这个查询

$page_set = mysql_query("SELECT * FROM pages WHERE subject_id =
            {$subject["id"]}", $connection);

但是我在加载我的页面时一直收到这个错误。

Database query failed: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

Answer 1

在没有复杂语法的情况下尝试一下:

$query = 'SELECT * FROM pages WHERE subject_id = ' . $subject['id'];
$page_set = mysql_query($query, $connection);

_{顺便说一句，我讨厌字符串中的变量解析，而更喜欢连接。}