php 邮件订阅,php写的邮件订阅与邮件发送简单实例
一，新建数据库表：email，如下：
mysql> use adamli;
Database changed
mysql> create table email(id int(4) not null auto_increment primary key,email va
rchar(150) unique not null);
Query OK, 0 rows affected (0.01 sec)
mysql> desc email;
+-------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+--------------+------+-----+---------+----------------+
| id | int(4) | NO | PRI | NULL | auto_increment |
| email | varchar(150) | NO | UNI | | |
+-------+--------------+------+-----+---------+----------------+
2 rows in set (0.00 sec)
二：数据库连接及email检查包含文件：
//连接数据库与检测邮件地址的包含文件：
function db_Connect()
{
global $conn;
$conn = mysql_connect("localhost","root","") or die("Connect mysql fail!");
mysql_select_db("adamli");
mysql_query("set names utf8");
}
function checkEmail($email)
{
global $conn;
global $result;
$sql = "select * from email where email='".$email."'";
$result = mysql_query($sql);
}
?>
将这些代码写于文件:include.php中；
三：邮件订阅与取消订阅文件：
include_once("include.php");
if(!$_POST)
{
//$display为页面要显示的内容，没有点击提交前显示此模块内容：
$display = "
Subscribe/Unsubscribe to a Mailling List
Your E-Mail Address
subscribeunsubscribe
";
}
else
{
//email为空时提示不能为空，重新访问页面文件停止程序继续执行：
if(trim($_POST['email'])=="")
{
echo "";
exit;
}
else
{
db_Connect();
checkEmail($_POST['email']);
if($_POST['check_sub']=="subscribe")
{
//如果是订阅的：
if(mysql_num_rows($result)<1)
{
//如果用户输入的email在数据库中没记录的，将用户输入的email地址插入数据库中，成功页面显示Subdecribe successfully！
$sql = "insert into email values('','$_POST[email]')";
mysql_query($sql) or die("Add a record into mysql fail!");
$display = "Subdecribe successfully!";
mysql_free_result($result);
mysql_close($conn);
}
else
{
//如果客户输入的email地址已在数据库中存在的，提示客户已经订阅，释放mysql_query占用的内存，关闭数据库：
$display = "You're already subscribed!";
mysql_free_result($result);
mysql_close($conn);
}
}
if($_POST['check_sub']=="unsubscribe")
{
//如果是要取消订阅的：
if(mysql_num_rows($result)<1)
{
//如果用户输入的email地址不存在于数据库email表中的，提示用户还没订阅，不能取消订阅：
$display = "Coudn't find your email address!";
mysql_free_result($result);
mysql_close($conn);
}
else
{
//取消订阅即将用户输入的email与数据库表中对应的email的该条记录删除：
$sql = "delete from email where email='".$_POST['email']."'";
mysql_query($sql) or die("Delete email fail!");
$display = "
You're unscribed!
";mysql_free_result($result);
mysql_close($conn);
}
}
}
}
echo $display;
?>
将这些代码保存为：index.php，此文件主要是邮件订阅与取消订阅的功能；
四：邮件发送：(主要是mail($email,$subject,$message)的使用，注意你的服务器要有邮件发送功能，并设置好php.ini文件相关内容，否则不能正常发送)
include_once("include.php");
if(!$_POST)
{
echo "
Send a Newsletter
Subject
Mail Body
";}
elseif($_POST)
{
if($_POST['subject']==""||$_POST['message']=="")
{
echo "";
exit;
}
db_Connect();
$sql = "select email from email";
$query = mysql_query($sql) or die("query fail,can not get email from mysql!");
while($result = mysql_fetch_object($query))
{
set_time_limit(0);
$mail = $result->email;
//发送邮件：
mail($mail,$_POST['subject'],$_POST[message]) or die("mail to ".$result->email." fail!
");
echo "newsletter sent to: ".$mail."
";
}
mysql_free_result($query);
mysql_close($conn);
}
?>
将这些代码保存为sendmail.php，此文件主要是实现邮件发送的功能；