php - MySQL ORDER BY 语句和 PHP 变量

Question

嗨，我失去了理智，我无法弄清楚，请帮忙。

这是我的 sql：

$query = " select SQL_CALC_FOUND_ROWS * from programme where 1=1    ".$_SESSION['subject_where']." ".$_SESSION['practice_where']." ".$_SESSION['key_stage_where']." ".$_SESSION['targeted_group_where']." ".$_SESSION['search_where']." " ORDER BY Rating DESC " ";`

我的 MySQL 选择工作正常，但我想按评级对搜索结果进行排序。当我ORDER BY Rating DESC在变量之后插入时，我总是收到以下错误：

Error message: Parse error: syntax error, unexpected T_STRING in /home4/kenobi/public_html/programmes.php on line 23

请帮忙 - 我做错了什么？

Answer 1

$query = " select SQL_CALC_FOUND_ROWS * from programme where 1=1 ".$_SESSION['subject_where']." ".$_SESSION['practice_where']." ".$_SESSION['key_stage_where']." ".$_SESSION['targeted_group_where']." ".$_SESSION['search_where']." ORDER BY Rating DESC ";

你有那些额外的报价在那里。除此之外... 1 = 1 是吧？这只是为了测试吗？