小编The*_*Big的帖子

我做了一个不发送任何电子邮件的小代码.它给了我一个空白页面.有什么建议？

<?php 
$result_array1 = array();
$result_array2 = array();
$result_array3 = array();
$result_array4 = array();
$sql1 = "SELECT * FROM  `test_thing`";
$result1 = mysql_query("$sql1") or die($sql1.mysql_error());
while($row1 = mysql_fetch_array($result1))
{
   $result_array1[] = $row1['email'];
   $result_array2[] = $subject;
   $result_array3[] = $message;
   $result_array4[] = $header;
}
$sentmail = mail($result_array1,$result_array2,$result_array3,$result_array4);
?>