As you know, there are cases where it’s necessary to attach a file that has been created dynamically to an email message, usually through a PHP server-side graphic library such as GD or via a custom function or class. Fortunately, Swift Mailer supports this requirement; its “fromPath()” method can take a file generated like this and annex it to an existing message.
To demonstrate this ability, below I modified the script built in the previous section, which simulates the situation described above. Look at it:
// example on sending a basic email message with Swift Mailer (uses the 'addPart()' method and Swift_Attachment class and attaches dynamic content)
// include required files
// create the mail transport using the 'newInstance()' method
$transport = Swift_SmtpTransport::newInstance('mail.domain.com', 25)
// create the mailer using the 'newInstance()' method
$mailer = Swift_Mailer::newInstance($transport);
// create a simple message using the 'newInstance()' method
// $image has been generated previously using for instance the GD library or a similar package
$message = Swift_Message::newInstance()
// specify the subject of the message
->setSubject('Testing Swift Mailer')
// specify the From argument
->setFrom(array('firstname.lastname@example.org' => 'Alejandro Gervasio'))
// specify the To argument
->setTo(array('email@example.com' =>' John Doe'))
->setCc(array('firstname.lastname@example.org' => 'Mary Jackson'))
->setBcc(array('email@example.com' => 'Susan Norton'))
// build the body part of the message
->setBody('Hey, how are you? I am sending you a message with the cool Swift Mailer library. Make sure to check the attached file!')
->addPart('<p>This part of the message has been formatted as HTML to make it look nicer</p>', 'text/html')
// send the email message
echo 'The message was sent successfully!';
echo 'Error sending email message';
Even though at first sight the above script looks very similar to the one that you saw in the previous section, it actually performs a different task. It attaches a dynamic PNG file that has been hypothetically created with the GD PHP library.
This file in question is then passed directly to the “newInstance()” method of the pertinent “Swift_Attachment” class, where it’s finally attached to the email message. Not too difficult to understand, right?
Please don’t get me wrong; I don’t want to sound like I’m marketing the Swift Mailer library to you, but it definitely makes handling attachments a no-brainer process. However, I’d like to finish this tutorial by showing you yet another example; it will demonstrate how to change, on the fly, the name of a file being attached.
To see how this last example will be created, read the next section. It’s only one click away.
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