cannot update mysql table with php

Question

Cannot update my table with the follow code...have been trying for hours... tagboard is the table name, mytag1 is what I want to update with reference to emailadd .

$myemail = mysql_real_escape_string( $_POST["myemail"] );
$mytag1 = mysql_real_escape_string( $_POST["mytag1"] );
echo $mytag1;
$query = "UPDATE tagboard SET mytag1='{$mytag1}' WHERE emailadd = {$myemail}";
$result=mysql_query($query);

OR

$sql="UPDATE tagboard SET mytag1 ='".$_POST['mytag1']."' WHERE  myemail='".$_POST['myemail']."'";
$result=mysql_query($sql);

Appreciate your help!

Answer 1

在查询中您的电子邮件地址字段周围添加引号：

$query = "UPDATE tagboard SET mytag1='{$mytag1}' WHERE emailadd = '{$myemail}'";

Answer 2

You have this line:

$query = "UPDATE tagboard SET mytag1='{$mytag1}' WHERE emailadd = {$myemail}";

Try putting single quotations around the email variable too

$query = "UPDATE tagboard SET mytag1='{$mytag1}' WHERE emailadd = '{$myemail}'";