从while循环获取一些记录到数组，然后通过电子邮件发送这些记录

I have a while loop:

我有一个while循环:

$users = mysqli_query($con, "SELECT * FROM table");
while($row = mysqli_fetch_array($users)) {          
  if    ($row['column1'] !=  $row['column2']) {
    echo "There is a different between column1 and column2<br />";
  }
}
$users =