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Attaching dynamically-generated files - PHP

In this eighth part of a ten-part series on the Swift Mailer email library, you'll learn how to attach files that have been dynamically generated to an email message. In addition, you'll see how to use Swift Mailer's "setFileName()" method to modify the name of an attachment before it's sent, which speaks for itself about this library's flexibility.

TABLE OF CONTENTS:
  1. Dynamically Attaching Files with Swift Mailer
  2. Review: handling attachments with Swift Mailer
  3. Attaching dynamically-generated files
  4. Dynamically changing the name of an attachment
By: Alejandro Gervasio
Rating: starstarstarstarstar / 1
February 24, 2010

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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

require_once 'lib/swift_required.php';

 

// create the mail transport using the 'newInstance()' method

$transport = Swift_SmtpTransport::newInstance('mail.domain.com', 25)

->setUsername('alejandro@domain.com')

->setPassword('password');

 

// 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('alejandro@domain.com' => 'Alejandro Gervasio'))

// specify the To argument

->setTo(array('john@domain.com' =>' John Doe'))

->setCc(array('mary@domain.com' => 'Mary Jackson'))

->setBcc(array('susan@domain.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')

->attach(Swift_Attachment::newInstance($image, 'sample_image.png'));

 

// send the email message

if ($mailer->send($message))

{

echo 'The message was sent successfully!';

}

else

{

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.



 
 
>>> More PHP Articles          >>> More By Alejandro Gervasio
 

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