Question

错误是：

您的SQL语法有错误;检查与您的MySQL服务器版本相对应的手册，以便在＃sa; sarojini＆＃39; _bookings WHERE date = 2014-07-24 AND start = 10：00：00＆＃39;附近使用正确的语法。在第1行

<?php
      session_start();
    require ('sql_connect.php'); 

     if (isset($_SESSION['id']) && is_numeric($_SESSION['id']))
     {
     $id=$_SESSION['id']; 
    $sql1 = mysql_query("SELECT name FROM lecturer WHERE staff_id ='$id'");
    $q = mysql_fetch_array($sql1);
    $n = $q['name'];
    $sql2 = mysql_query("SELECT * FROM bookings WHERE lecturer_name='$n' ORDER BY date");
    $q1 = mysql_fetch_array($sql2);
    $d = $q1['date'];
    $s = $q1['start'];

     $result = mysql_query("DELETE FROM '$n'_bookings WHERE date=$d AND start=$s")
     or die(mysql_error()); 

      //header("Location: manageappointment1.php");
     }
     else
      {
     //header("Location: manageappointment1.php");
     }

    ?>

Answer 1

您的查询："DELETE FROM '$n'_bookings WHERE date=$d AND start=$s"

正确查询："DELETE FROM ".$n."_bookings WHERE date=$d AND start=$s"

实际上查询是正确的，它只是关于你的var ..

你也可以写：

"DELETE FROM {$n}_bookings WHERE date=$d AND start=$s"

Answer 2

而不是

 $result = mysql_query("DELETE FROM '$n'_bookings WHERE date=$d AND start=$s")or die(mysql_error());

使用

 $result = mysql_query("DELETE FROM ".$n."_bookings WHERE date='$d' AND start='$s'")or die(mysql_error());

Answer 3

我认为这是因为你使用简单的引用。使用此：

DELETE FROM $n_bookings WHERE date=$d AND start=$s

我运行删除脚本时有一些错误

3 个答案: