php - 使用 near order by id desc limit 1 的正确语法

Question

如果执行代码，会显示错误:

check the manual that corresponds to your MySQL server version for the right syntax to use near 'ORDER BY ID DESC limit 1'

就像下面的例子:

$prevquery = "SELECT  * FROM $tbl_name WHERE  ID < $ID ORDER BY ID DESC limit 1";
$prevresult= mysql_query($prevquery) or die(mysql_error());

while($prevrow = mysql_fetch_row($prevresult))
{

  displaying the previous ID:-
  $prevID = $prevrow['ID'];
}

应该怎么做才能防止这种情况发生？

Answer 1

试试这个

$prevquery = "SELECT  * FROM $tbl_name WHERE  ID < '$ID' ORDER BY ID DESC limit 1";

如果这不起作用，则回显查询并在 mysql phpmyadmin 面板中运行

echo $prevquery = "SELECT  * FROM $tbl_name WHERE  ID < '$ID' ORDER BY ID DESC limit 1";