codeigniter发送邮件并打印调试信息的方法

$this->load->library('email' );
$this->email- >from(' you@example. ' , ' Your Name' );
$this->email- >to('someone@example. ' );
$this->email- >('another@person. ' );
$this->email- >b('theboss@example. ' );
$this->email- >subject(' Email Test' );
$this->email- >message('This is a simple test we wrote for the email');
$this->email- >send();
echo $this->email- >print_debugger();