thinkphp5整合swiftmailer发送邮件

<?php
namespace Common\Lib\Mailer;

/**
 * 邮件类
 */

class SwiftMailer{
	/**
	 * 邮件传输对象
	 * @var object
	 */
	private $transport;

	/**
	 * 发送邮件配置信息
	 * @var array
	 */
	private $options = [
		'from_email'	=> '',
		'from_name'		=> '',
		'smtp_server' 	=> '',
		'smtp_secure' 	=> '',
		'smtp_port'		=> 25,
		'username'    	=> '',
		'password'    	=> ''
	];

	/**
	 * 错误信息
	 * @var array
	 */
	private $error = [];

	/**
	 * 发送邮件超时(秒)
	 * @var integer
	 */
	private $timeout  = 5;


	/**
	 * 构造方法
	 * @param array $options 发送邮件配置信息
	 * [
	 *  from_email  : 发件人邮箱
	 *  from_name   : 发件人
	 * 	smtp_server : smtp服务器
	 * 	smtp_secure : 连接方式
	 * 	smtp_port  	: 端口
	 * 	username    : 发件箱帐号
	 * 	password    : 发件箱密码
	 * ]
	 */
	public function __construct($options = [])
	{
		$this->options = array_merge($this->options, $options);
	}

	/**
	 * 创建实例
	 * @param array $options 发送邮件配置信息
	 * [
	 *  from_email  : 发件人邮箱
	 *  from_name   : 发件人
	 * 	smtp_server : smtp服务器
	 * 	smtp_secure : 连接方式
	 * 	smtp_port  	: 端口
	 * 	username    : 发件箱帐号
	 * 	password    : 发件箱密码
	 * ]
	 * @return this
	 */
	public static function create($options = [])
	{
		return new static($options);
	}

	/**
	 * 发送邮件接口
	 * @param  mixed  $to      收件人['[e-mail]' => 'xxxx'] | '[e-mail]'
	 * @param  string $subject 邮件主题
	 * @param  string $body    邮件内容
	 * @return 
	 */
	public function send($to, $subject, $body)
	{
		$transport = $this->createTransport();
		$mailer = \Swift_Mailer::newInstance($transport);
		//创建消息类
		$message = \Swift_Message::newInstance();

		try
		{
			//设置发件人
			$message->setFrom([$this->options['from_email'] => $this->options['from_name']]);
			//设置收件人
	        $message->setTo($to);
	        //设置主题
	        $message->setSubject($subject);
	        //设置主题内容
	        $message->setBody(htmlspecialchars_decode($body), 'text/html', 'UTF-8');
	        //发送邮件
	        $result = $mailer->send($message, $failures);

	        if($result) {
	        	return true;
	        } else {
	        	$this->setError('发送邮件失败', $failures);
	        	return false;
	        }
		}
		catch(\Exception $e)
		{
			$this->setError($e->getMessage());
			return false;
		}
	}

	/**
	 * 创建邮件传输器
	 * @return 
	 */
	private function createTransport()
	{
		$transport = \Swift_SmtpTransport::newInstance($this->options['smtp_server'], $this->options['smtp_port'], $this->options['smtp_secure']);

		//设置发件箱账号、密码
        $transport->setUsername($this->options['username']);
        $transport->setPassword($this->options['password']);
        //设置超时
        $transport->setTimeout($this->timeout);

        return $transport;
	}

	/**
	 * 设置发送邮件超时时间
	 * @param integer $timeout 发送邮件超时(秒)
	 */
	public function timeout($timeout)
	{
		$this->timeout = $timeout;
		return $this;
	}

	/**
	 * 设置错误信息
	 * @param string $msg      错误消息
	 * @param array  $failures 被拒绝的邮箱地址
	 */
	private function setError($msg, $failures = [])
	{
		$this->error = [
			'msg' 		=> $msg,
			'failures'	=> $failures
		];
	}

	/**
	 * 获取错误信息
	 * @return array
	 */
	public function getError()
	{
		return $this->error;
	}
}

测试代码：

/**
 * 发送邮件
 * @param  string $to_email 接收人邮箱
 * @param  string $title    主题
 * @param  string $content  邮件内容
 * @return bool
 */
function send_email($to_email, $title, $content){
    $options = [
        'from_email'  => C('EMAIL_FROM_EMAIL'),
        'from_name'   => C('EMAIL_FROM_NAME'),
        'smtp_server' => C('EMAIL_SMTP_SERVER'),
        'smtp_secure' => C('EMAIL_SMTP_SECURE'),
        'smtp_port'   => C('EMAIL_SMTP_PORT'),
        'username'    => C('EMAIL_USERNAME'),
        'password'    => C('EMAIL_PASSWORD')
    ];

    $SwiftMailer = \Common\Lib\Mailer\SwiftMailer::create($options);
    $result = $SwiftMailer->send($to_email, $title, $content);
    
    if($result)
    {
      return true;
    }
    else
    {
      $errors = $SwiftMailer->getError();
      $error_info = sprintf('email: (msg: %s, failures: %s)', $errors['msg'], json_encode($errors['failures']));
      \Think\Log::write(mb_convert_encoding($error_info, 'UTF-8', 'GBK'), 'ERR');
      return false;
    }
}

//发送邮件
send_email('[e-mail]', '主题', '正文');