CodeIgniter强大的电子邮件类支持以下功能：

• 多种协议：Mail，Sendmail和SMTP

• 用于SMTP的TLS和SSL加密

• 多个收件人

• CC和BCC

• HTML或纯文本电子邮件

• 附件

• Word包装

• 优先级

• BCC批处理模式，可以将大量电子邮件列表分解为小BCC批次。

• 电子邮件调试工具

• 使用电子邮件库

• 在配置文件中设置电子邮件首选项

• 发送电子邮件

• 设置邮件首选项

- [Email Preferences](about:blank#email-preferences)- [Overriding Word Wrapping](about:blank#overriding-word-wrapping)

• 类参考

使用电子邮件库

发送电子邮件

发送电子邮件不仅简单，而且您可以随时对其进行配置或将您的偏好设置设置为配置文件。

以下是一个演示您如何发送电子邮件的基本示例。注意：此示例假定您正在从您的一个控制器发送电子邮件。

$this->load->library('email');$this->email->from('[email protected]', 'Your Name');$this->email->to('[email protected]');$this->email->cc('[email protected]');$this->email->bcc('[email protected]');$this->email->subject('Email Test');$this->email->message('Testing the email class.');$this->email->send();

设置邮件首选项

有21种不同的优先选择可用于定制您的电子邮件发送方式。您可以按照此处所述手动设置它们，或者通过存储在配置文件中的首选项自动设置它们，如下所述：

首选项是通过向电子邮件初始化方法传递一组首选项值来设置的。以下是您如何设置一些首选项的示例：

$config['protocol'] = 'sendmail';$config['mailpath'] = '/usr/sbin/sendmail';$config['charset'] = 'iso-8859-1';$config['wordwrap'] = TRUE;$this->email->initialize($config);

注意

如果您不设置它们，大部分首选项都会使用默认值。

在配置文件中设置电子邮件首选项

如果您不想使用上述方法设置首选项，则可以将它们放入配置文件中。只需创建一个名为email.php的新文件，在该文件中添加$ config数组。然后将该文件保存在config / email.php中，它将自动使用。如果将$this->email->initialize()首选项保存在配置文件中，则不需要使用该方法。

电子邮件偏好

以下是发送电子邮件时可以设置的所有首选项列表。

压倒一切的词包装

如果您启用了自动换行功能（建议遵循RFC 822），并且您的电子邮件中有很长的链接，则它也可能被封装，导致其被收件人无法点击。CodeIgniter允许您手动覆盖部分消息中的文字换行，如下所示：

The text of your email that
gets wrapped normally.{unwrap}http://example.com/a_long_link_that_should_not_be_wrapped.html{/unwrap}More text that will be
wrapped normally.

放置你不希望用词包装的物品：{unwrap} {/ unwrap}

类参考

class CI_Emailfrom($from[, $name = ''[, $return_path = NULL]])

• $ from（string） - “From”电子邮件地址

• $ name（字符串） - “从”显示名称

• $ return_path（字符串） - 可选电子邮件地址将未发送的电子邮件重定向到

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Sets the email address and name of the person sending the email:

$ this-> email-> from（'email protected'，'Your Name'）;

You can also set a Return-Path, to help redirect undelivered mail:

$this->email->from('email protected', 'Your Name', 'email protected');

Note

Return-Path can’t be used if you’ve configured ‘smtp’ as your protocol.

reply_to($replyto[, $name = ''])

• $replyto (string) – E-mail address for replies

• $name (string) – Display name for the reply-to e-mail address

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Sets the reply-to address. If the information is not provided the information in the :meth:from method is used. Example:

$this->email->reply_to('email protected', 'Your Name');

to($to)

• $to (mixed) – Comma-delimited string or an array of e-mail addresses

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Sets the email address(s) of the recipient(s). Can be a single e-mail, a comma-delimited list or an array:

$this->email->to('email protected');

$this->email->to('email protected, email protected, email protected');

$this->email->to(         array('email protected', 'email protected', 'email protected') );

cc($cc)

• $cc (mixed) – Comma-delimited string or an array of e-mail addresses

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Sets the CC email address(s). Just like the “to”, can be a single e-mail, a comma-delimited list or an array.

bcc($bcc[, $limit = ''])

• $bcc (mixed) – Comma-delimited string or an array of e-mail addresses

• $limit (int) – Maximum number of e-mails to send per batch

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Sets the BCC email address(s). Just like the `to()` method, can be a single e-mail, a comma-delimited list or an array.

If $limit is set, “batch mode” will be enabled, which will send the emails to batches, with each batch not exceeding the specified $limit.

subject($subject)

• $subject (string) – E-mail subject line

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Sets the email subject:

$this->email->subject('This is my subject');

message($body)

• $body (string) – E-mail message body

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Sets the e-mail message body:

$this->email->message('This is my message');

set_alt_message($str)

• $str (string) – Alternative e-mail message body

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Sets the alternative e-mail message body:

$this->email->set_alt_message('This is the alternative message');

This is an optional message string which can be used if you send HTML formatted email. It lets you specify an alternative message with no HTML formatting which is added to the header string for people who do not accept HTML email. If you do not set your own message CodeIgniter will extract the message from your HTML email and strip the tags.

set_header($header, $value)

• $header (string) – Header name

• $value (string) – Header value

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Appends additional headers to the e-mail:

$this->email->set_header('Header1', 'Value1'); $this->email->set_header('Header2', 'Value2');

clear([$clear_attachments = FALSE])

• $clear_attachments (bool) – Whether or not to clear attachments

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Initializes all the email variables to an empty state. This method is intended for use if you run the email sending method in a loop, permitting the data to be reset between cycles.

foreach ($list as $name => $address) {         $this->email->clear();          $this->email->to($address);         $this->email->from('email protected');         $this->email->subject('Here is your info '.$name);         $this->email->message('Hi '.$name.' Here is the info you requested.');         $this->email->send(); }

If you set the parameter to TRUE any attachments will be cleared as well:

$this->email->clear(TRUE);

send([$auto_clear = TRUE])

• $auto_clear (bool) – Whether to clear message data automatically

Returns:  TRUE on success, FALSE on failure

Return type:  bool

The e-mail sending method. Returns boolean TRUE or FALSE based on success or failure, enabling it to be used conditionally:

if ( ! $this->email->send()) {         // Generate error }

This method will automatically clear all parameters if the request was successful. To stop this behaviour pass FALSE:

if ($this->email->send(FALSE)) {         // Parameters won't be cleared }

Note

In order to use the print_debugger() method, you need to avoid clearing the email parameters.

attach($filename[, $disposition = ''[, $newname = NULL[, $mime = '']]])

• $filename (string) – File name

• $disposition (string) – ‘disposition’ of the attachment. Most email clients make their own decision regardless of the MIME specification used here. https://www.iana.org/assignments/cont-disp/cont-disp.xhtml

• $newname (string) – Custom file name to use in the e-mail

• $mime (string) – MIME type to use (useful for buffered data)

Returns:  CI\_Email instance (method chaining)

Return type:  CI\_Email

Enables you to send an attachment. Put the file path/name in the first parameter. For multiple attachments use the method multiple times. For example:

$this->email->attach('/path/to/photo1.jpg'); $this->email->attach('/path/to/photo2.jpg'); $this->email->attach('/path/to/photo3.jpg');

To use the default disposition (attachment), leave the second parameter blank, otherwise use a custom disposition:

$this->email->attach('image.jpg', 'inline');

You can also use a URL:

$this->email->attach('http://example.com/filename.pdf');

If you’d like to use a custom file name, you can use the third parameter:

$this->email->attach('filename.pdf', 'attachment', 'report.pdf');

If you need to use a buffer string instead of a real - physical - file you can use the first parameter as buffer, the third parameter as file name and the fourth parameter as mime-type:

$this->email->attach($buffer, 'attachment', 'report.pdf', 'application/pdf');

attachment_cid($filename)

• $filename (string) – Existing attachment filename

Returns:  Attachment Content-ID or FALSE if not found

Return type:  string

Sets and returns an attachment’s Content-ID, which enables your to embed an inline (picture) attachment into HTML. First parameter must be the already attached file name.

$filename = '/img/photo1.jpg'; $this->email->attach($filename); foreach ($list as $address) {         $this->email->to($address);         $cid = $this->email->attachment_cid($filename);         $this->email->message('<img src="cid:'. $cid .'" alt="photo1" />');         $this->email->send(); }

Note

Content-ID for each e-mail must be re-created for it to be unique.

print_debugger([$include = array('headers', 'subject', 'body')])

• $include (array) – Which parts of the message to print out

Returns:  Formatted debug data

Return type:  string

Returns a string containing any server messages, the email headers, and the email message. Useful for debugging.

You can optionally specify which parts of the message should be printed. Valid options are: headers, subject, body.

Example:

// You need to pass FALSE while sending in order for the email data // to not be cleared - if that happens, print_debugger() would have // nothing to output. $this->email->send(FALSE);  // Will only print the email headers, excluding the message subject and body $this->email->print_debugger(array('headers'));

Note

By default, all of the raw data will be printed.

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Licensed under the MIT License.

https://www.codeigniter.com/user_guide/libraries/email.html