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<?php
/**
* Base factory class
*/
class EmailFactory {
function getBody($text) {
// Abstract Factory Method
}
}
/**
* Factory for plain text emails
*/
class TextEmailFactory extends EmailFactory {
function getBody($text) {
return new TextBody($text);
}
}
/**
* Factory for HTML emails
*/
class HtmlEmailFactory extends EmailFactory {
function getBody($text) {
return new HtmlBody($text);
}
}
/**
* The class created by TextEmailFactory::getBody()
*/
class TextBody {
var $text;
function TextBody($text) {
$this->text = $text;
}
}
/**
* The class created by HtmlEmailFactory::getBody()
*/
class HtmlBody {
var $text;
function HtmlBody($text) {
$this->text = $text;
}
}
/**
* Class which "sends" and email
*/
class EmailSender {
function sendMessage($email,$body) {
echo ( "Sending email to $email with a ".get_class($body).'<br>' );
}
}
// A dummy array of customers to send emails to
$customers = array (
array ('email'=>'jbloggs@yahoo.com','emailpreferred'=>'html'),
array ('email'=>'jleno@cnn.com','emailpreferred'=>'text'),
array ('email'=>'aleegator@reptiles.com','emailpreferred'=>'html')
);
// The HTML and plain text versions of the email
$htmltext = 'This is an <em>HTML Message</em>';
$plaintext = 'This is plain text';
// Create the sender
$sender =& new EmailSender();
// Loop through the customers
foreach ( $customers as $customer ) {
// Decide which factory class to create
switch ( $customer['emailpreferred'] ) {
case 'html':
// Create the factory
$factory = & new HtmlEmailFactory();
// Call the factory method
$body = & $factory->getBody($htmltext);
break;
case 'text':
default:
// Create the factory
$factory = & new TextEmailFactory();
// Call the factory method
$body = & $factory->getBody($plaintext);
break;
}
// "Send" the message
$sender->sendMessage($customer['email'],$body);
}
?>
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