提交时出现错误SQL(更新Set Where)


error SQL (Update Set Where) on submit

在用户以文本类型形式输入后,我当前在获取以下代码以更新MySQLi时遇到问题:

print "<input type='text' name='prof' >Prof<br />";    
$profselectorX=$_POST['prof'];
$profselector=$mysqli->real_escape_string($profselectorX);
$query="UPDATE homework1 SET 'prof'='".$profselector."' WHERE idnumber='".$editselector."'";
$resultz=$mysqli->query($query) or die($mysqli->error); 

提前谢谢!

像这样重写查询

$query="UPDATE `homework1` SET `prof`='$profselector' WHERE `idnumber`='$editselector'";