CI_Email::attachment_cid()

attachment_cid($filename)

Parameters:	$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.

Links:

http://www.codeigniter.com/user_guide/libraries/email.html#CI_Email::attachment_cid

doc_CodeIgniter

2016-10-15 16:31:28

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