计算 EZMLM 所需的散列值


int ezmlm_hash ( string $addr )

ezmlm_hash 计算用于在 MySQL 数据库中保存 EZMLM 邮件列表的散列值。




addr 的散列值。


示例 #1 计算散列值并订阅一个用户


$user = "joecool@example.com";
$hash = ezmlm_hash($user);
$query = sprintf("INSERT INTO sample VALUES (%s, '%s')", $hash, $user);
$db->query($query); // using PHPLIB db interface





bool mail ( string $to , string $subject , string $message [, string $additional_headers [, string $additional_parameters ]] )




本字符串的格式必须符合 » RFC 2822。例如:

  • user@example.com
  • user@example.com, anotheruser@example.com
  • User <user@example.com>
  • User <user@example.com>, Another User <anotheruser@example.com>


Caution 本项不能包含任何换行符,否则邮件可能无法正确发送。


行之间必须以一个 LF(\n)分隔。每行不能超过 70 个字符。

Caution (Windows 下)当 PHP 直接连接到 SMTP 服务器时,如果在一行开头发现一个句号,则会被删掉。要避免此问题,将单个句号替换成两个句号。

$text = str_replace("\n.", "\n..", $text);

String to be inserted at the end of the email header.

This is typically used to add extra headers (From, Cc, and Bcc). Multiple extra headers should be separated with a CRLF (\r\n).


When sending mail, the mail must contain a From header. This can be set with the additional_headers parameter, or a default can be set in php.ini.

Failing to do this will result in an error message similar to Warning: mail(): "sendmail_from" not set in php.ini or custom "From:" header missing.


If messages are not received, try using a LF (\n) only. Some poor quality Unix mail transfer agents replace LF by CRLF automatically (which leads to doubling CR if CRLF is used). This should be a last resort, as it does not comply with » RFC 2822.

additional_parameters (optional)
The additional_parameters parameter can be used to pass an additional parameter to the program configured to use when sending mail using the sendmail_path configuration setting. For example, this can be used to set the envelope sender address when using sendmail with the -f sendmail option.

The user that the webserver runs as should be added as a trusted user to the sendmail configuration to prevent a 'X-Warning' header from being added to the message when the envelope sender (-f) is set using this method. For sendmail users, this file is /etc/mail/trusted-users.


Returns TRUE if the mail was successfully accepted for delivery, FALSE otherwise.

It is important to note that just because the mail was accepted for delivery, it does NOT mean the mail will actually reach the intended destination.


4.3.0 (Windows only)All custom headers (like From, Cc, Bcc and Date) are supported, and are not case-sensitive. (As custom headers are not interpreted by the MTA in the first place, but are parsed by PHP, PHP < 4.3 only supported the Cc header element and was case-sensitive).
4.2.3The additional_parameters parameter is disabled in safe_mode and the mail function will expose a warning message and return FALSE when used.
4.0.5The additional_parameters parameter was added.


示例 #1 Sending mail.

Using mail to send a simple email:

// The message
$message = "Line 1\nLine 2\nLine 3";

// In case any of our lines are larger than 70 characters, we should use wordwrap()
$message = wordwrap($message, 70);

// Send
mail('caffinated@example.com', 'My Subject', $message);

示例 #2 Sending mail with extra headers.

The addition of basic headers, telling the MUA the From and Reply-To addresses:

$to      = 'nobody@example.com';
$subject = 'the subject';
$message = 'hello';
$headers = 'From: webmaster@example.com' . "\r\n" .
    'Reply-To: webmaster@example.com' . "\r\n" .
    'X-Mailer: PHP/' . phpversion();

mail($to, $subject, $message, $headers);

示例 #3 Sending mail with an additional command line parameter.

The additional_parameters parameter can be used to pass an additional parameter to the program configured to use when sending mail using the sendmail_path.

mail('nobody@example.com', 'the subject', 'the message', null,

示例 #4 Sending HTML email

It is also possible to send HTML email with mail.

// multiple recipients
$to  = 'aidan@example.com' . ', '; // note the comma
$to .= 'wez@example.com';

// subject
$subject = 'Birthday Reminders for August';

// message
$message = '
  <title>Birthday Reminders for August</title>
  <p>Here are the birthdays upcoming in August!</p>

// To send HTML mail, the Content-type header must be set
$headers  = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";

// Additional headers
$headers .= 'To: Mary <mary@example.com>, Kelly <kelly@example.com>' . "\r\n";
$headers .= 'From: Birthday Reminder <birthday@example.com>' . "\r\n";
$headers .= 'Cc: birthdayarchive@example.com' . "\r\n";
$headers .= 'Bcc: birthdaycheck@example.com' . "\r\n";

// Mail it
mail($to, $subject, $message, $headers);


If intending to send HTML or otherwise Complex mails, it is recommended to use the PEAR package » PEAR::Mail.



The Windows implementation of mail differs in many ways from the Unix implementation. First, it doesn't use a local binary for composing messages but only operates on direct sockets which means a MTA is needed listening on a network socket (which can either on the localhost or a remote machine).

Second, the custom headers like From:, Cc:, Bcc: and Date: are not interpreted by the MTA in the first place, but are parsed by PHP.

As such, the to parameter should not be an address in the form of "Something <someone@example.com>". The mail command may not parse this properly while talking with the MTA.


It is worth noting that the mail function is not suitable for larger volumes of email in a loop. This function opens and closes an SMTP socket for each email, which is not very efficient.

For the sending of large amounts of email, see the » PEAR::Mail, and » PEAR::Mail_Queue packages.


The following RFCs may be useful: » RFC 1896, » RFC 2045, » RFC 2046, » RFC 2047, » RFC 2048, » RFC 2049, and » RFC 2822.



  • ezmlm_hash — 计算 EZMLM 所需的散列值
  • mail — 发送邮件