php 中的邮件功能仅在我在消息中添加单词“激活”并且如果我删除该单词时该功能不起作用
$to ="$email";
$from ="mina nasser <mark@yahoo.com>";
$subject ="Login Password Generated";
$message="<br />New Login Password <br />
activate Your New Password for our site is:<u>$temp_pass</u><br />";
$headers ="from:{$from}\r\n";
$headers .= "MIME-Version: 1.0\n";
$headers .= "Content-type: text/html; charset=iso-8859-1\r\n";
mail($to, $subject, $message, $headers);
请有人帮助我