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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 2.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Mailer;
use Cake\Core\InstanceConfigTrait;
/**
* Abstract transport for sending email
*
* @mixin \Cake\Core\InstanceConfigTrait
*/
abstract class AbstractTransport
{
use InstanceConfigTrait;
/**
* Default config for this class
*
* @var array
*/
protected $_defaultConfig = [];
/**
* Send mail
*
* @param \Cake\Mailer\Email $email Email instance.
* @return array
*/
abstract public function send(Email $email);
/**
* Constructor
*
* @param array $config Configuration options.
*/
public function __construct($config = [])
{
$this->setConfig($config);
}
/**
* Help to convert headers in string
*
* @param array $headers Headers in format key => value
* @param string $eol End of line string.
* @return string
*/
protected function _headersToString($headers, $eol = "\r\n")
{
$out = '';
foreach ($headers as $key => $value) {
if ($value === false || $value === null || $value === '') {
continue;
}
$out .= $key . ': ' . $value . $eol;
}
if (!empty($out)) {
$out = substr($out, 0, -1 * strlen($eol));
}
return $out;
}
}