我已经编写了自己的 Code Igniter 模型来发送电子邮件。直到最近我开始收到此错误时，一切都很好：
致命错误：无法在第 2319 行的 /home/mysite/public_html/subdir/application/libraries/phpmailer/class.phpmailer.php 中重新声明类 phpmailerException
我在用着：
CodeIgniter 2 PHPMailer 5.1
我尝试了以下方法来解决它：
- 添加了“$mail->SMTPDebug = 0”以关闭错误。
- 添加：“$mail->MailerDebug = false;”
- 将 PHPMailer 修改为仅在打开 SMTPDebug 时显示错误。
- 查找并删除任何回声语句
- 添加了 try/catch 块尝试添加/删除： $mail = new PHPMailer(true);
这是我的控制器方法（公司/联系人），它调用我的模型（message_model）：
function contact()
{
//Do settings.
$this->options->task='email';
$this->options->change = 'sent';
$this->options->form_validation='';
$this->options->page_title='Contact Us';
//Import library
include_once('application/libraries/recaptcha/recaptchalib.php');//Include recaptcha library.
//Keys for recaptcha, stored in mainconfig file.
$this->options->publickey = $this->config->item('recaptcha_public');
$this->options->privatekey = $this->config->item('recaptcha_private');
//Form validation
$this->form_validation->set_error_delimiters('<div class="error">', '</div>');
$this->form_validation->set_rules('name_field','Name of problem','trim|required|min_length[3]|max_length[100]');
$this->form_validation->set_rules('desc_field','Description','trim|required|min_length[10]|max_length[2000]');
$this->form_validation->set_rules('email_field','Your email address','trim|required|valid_email');
$this->form_validation->set_rules('recaptcha_response_field','captcha field','trim|required|callback__check_recaptcha');
//If valid.
if( $this->form_validation->run() )
{
//Set email contents.
$message="This is a message from the contact form on ".$this->config->item('site_name')."<br /><br />";
$message.=convert_nl($this->input->post('desc_field'));
$message.="<br /><br />Reply to this person by clicking this link: <a href=\"mailto:".$this->input->post('email_field')."\">".$this->input->post('name_field')."</a><br /><br />";
$options = array('host'=>$this->config->item('email_host'),//mail.fixilink.com
'username'=>$this->config->item('email_username'),
'password'=>$this->config->item('email_password'),
'from_name'=>$this->input->post('name_field'),
'to'=>array($this->config->item('email_to')=>$this->config->item('email_to') ),
'cc'=>$this->config->item('email_cc'),
'full_name'=>$this->input->post('name_field'),
'subject'=>'Email from '.$this->config->item('site_name').' visitor: '.$this->input->post('name_field'),
'message'=>$message,
'word_wrap'=>50,
'format'=>$this->config->item('email_format'),
'phpmailer_folder'=>$this->config->item('phpmailer_folder')
);
//Send email using own email class and phpmailer.
$result = $this->message_model->send_email($options);
//Second email to sender
//Set email contents.
$message="Thank you for your enquiry, we aim to get a reply to you within 2 working days. In the meantime, please do follow us on www.facebook.com/autismworksuk";
$options = array('host'=>$this->config->item('email_host'),//mail.fixilink.com
'username'=>$this->config->item('email_username'),
'password'=>$this->config->item('email_password'),
'from_name'=>$this->input->post('name_field'),
'to'=>$this->input->post('email_field'),
'full_name'=>$this->input->post('name_field'),
'subject'=>'Email from '.$this->config->item('site_name'),
'message'=>$message,
'word_wrap'=>50,
'format'=>$this->config->item('email_format'),
'phpmailer_folder'=>$this->config->item('phpmailer_folder')
);
//Send email using own email class and phpmailer.
$result = $this->message_model->send_email($options);
//Set result.
if($result==-1)
$this->session->set_flashdata('result', ucfirst($this->options->task).' was not '.$this->options->change.' because of a database error.');
elseif($result==0)
$this->session->set_flashdata('result', 'No changes were made.');
else
$this->session->set_flashdata('result', ucfirst($this->options->task).' was '.$this->options->change.' successfully.');
//Redirect to completed controller.
redirect('completed');
}
//Validation failed or first time through loop.
$this->load->view('company/contact_view.php',$this->options);
}
这是我的模型发送电子邮件的方法。它曾经可以工作，但是我现在可以想到没有任何更改，但出现异常错误：
function send_email($options=array())
{
if(!$this->_required(array('host','username','password','from_name','to','full_name','subject','message'),$options))//check the required options of email and pass aggainst provided $options.
return false;
$options = $this->_default(array('word_wrap'=>50,'format'=>'html','charset'=>'utf-8'),$options);
try
{
if(isset($options['phpmailer_folder']))
require($options['phpmailer_folder']."/class.phpmailer.php");
else
require("application/libraries/phpmailer/class.phpmailer.php");//Typical CI 2.1 folder.
$mail = new PHPMailer();
$mail->MailerDebug = false;
//Set main fields.
$mail->SetLanguage("en", 'phpmailer/language/');
$mail->IsSMTP();// set mailer to use SMTP
$mail->SMTPDebug = 0;
$mail->Host = $options['host'];
$mail->SMTPAuth = TRUE; // turn on SMTP authentication
$mail->Username = $options['username'];
$mail->Password = $options['password'];
$mail->FromName = $options['from_name'];//WHo is the email from.
$mail->WordWrap = $options['word_wrap'];// Set word wrap to 50 characters default.
$mail->Subject = $options['subject'];
$mail->Body = $options['message'];
$mail->CharSet = $options['charset'];
//From is the username on the server, not sender email.
if(isset($options['from']))
$mail->From = $options['from'];
else
$mail->From = $mail->Username; //Default From email same as smtp user
//Add reply to.
if(isset($options['reply_to']))
$mail->AddReplyTo($options['reply_to'], $options['from']);
if(isset($options['sender']))
$mail->Sender = $options['sender'];
//Add recipients / to field (required)
if(is_array($options['to']))
{
foreach($options['to'] as $to =>$fn)
$mail->AddAddress($to, $fn);
}
else
{
$mail->AddAddress($options['to']); //Email address where you wish to receive/collect those emails.
}
//Add cc to list if exists. Must be an array
if(isset($options['cc']))
{
if(is_array($options['cc']))
{
foreach($options['cc'] as $to =>$fn)
$mail->AddCC($to, $fn);
}
else
{
log_message('debug', '---->CC field must be an array for use with Message_Model.');
}
}
//Add bcc to list if exists. Must be an array
if(isset($options['bcc']))
{
if(is_array($options['bcc']))
{
foreach($options['bcc'] as $to =>$fn)
$mail->AddBCC($to, $fn);
}
else
{
log_message('debug', '---->BCC field must be an array for use with Message_Model.');
}
}
//Alternative text-only body.
if(isset($options['alt_body']))
$mail->AltBody=$options['alt_body'];
else
$mail->AltBody = htmlspecialchars_decode( strip_tags( $options['message'] ),ENT_QUOTES );//Strip out all html and other chars and convert to plain text.
//Plain/html format.
if(isset($options['format']))
{
if($options['format']=='html')
$mail->IsHTML(true); // set email format to HTML
}
//Send email and set result.
$return['message']='';
if(!$mail->Send())
{
$return['message'].= "Message could not be sent.<br />\n";
$return['message'].= "Mailer Error: " . $mail->ErrorInfo."\n";
$return['result'] = 0;
}
else
{
$return['message'].= "Message has been sent successfully.\n";
$return['result'] = 1;
}
}
catch (phpmailerException $e)
{
log_message('error', '---->PHPMailer error: '.$e->errorMessage() );
}
catch (Exception $e)
{
log_message('error', '---->PHPMailer error: '.$e->errorMessage() );
}
return $return;
}