如何解决(PHP 初学者帮助) 如果您打算使用 SMTP，请在此行之后添加您的 SMTP 代码？

我是 PHP 和 HTML 的新手，需要有关使用 PHP 发送电子邮件的帮助。代码我使用的是带有详细记录代码的 Web 模板，这可能是一个简单的修复。

问题：当我在 Live Server 中为联系人表单发送测试电子邮件并按“发送”时，没有任何反应，没有电子邮件通过，也没有成功消息。我的 PHP 代码中是否缺少某些内容，还是需要设置 SMTP？

*我的知识很基础，所以这个问题可能会问错。感谢您的任何反馈！

<?PHP

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require ''PHPmailer/src/Exception.PHP'';
require ''PHPmailer/src/PHPMailer.PHP'';

// If you intend you use SMTP,uncomment next line
require ''PHPmailer/src/SMTP.PHP'';


// Set the recipient email address here
$recipients = array();

$recipients[] = array(
    ''email'' => ''contact@westonborst.com'',''name'' => ''Weston''
);


// Set the sender email address here
$sender = array(
    ''email'' => ''contact@westonborst.com'',''name'' => ''Weston''
);


// reCaptcha Secret Key - Add this only if you use reCaptcha with your Contact Forms
$recaptcha_secret = '''';


// PHPMailer Initialization
$mail = new PHPMailer();

// If you intend you use SMTP,add your SMTP Code after this Line


// End of SMTP


// Form Messages
$message = array(
    ''success''           => ''Thank you for your message. It has been sent.'',''error''             => ''There was an error trying to send your message. Please try again later.'',''error_bot''         => ''Bot Detected! Message Could not be send. Please try again.'',''error_unexpected''  => ''There was an unexpected error trying to send your message. Please try again later.'',''recaptcha_invalid'' => ''Captcha not Validated! Please Try Again.'',''recaptcha_error''   => ''Captcha not Submitted! Please Try Again.''
);

// Form Processor
if( $_SERVER[''REQUEST_METHOD''] == ''POST'' ) {

    $prefix    = !empty( $_POST[''prefix''] ) ? $_POST[''prefix''] : '''';
    $submits   = $_POST;
    $botpassed = false;
    
    $message_form                 = !empty( $submits[''message''] ) ? $submits[''message''] : array();
    $message[''success'']           = !empty( $message_form[''success''] ) ? $message_form[''success''] : $message[''success''];
    $message[''error'']             = !empty( $message_form[''error''] ) ? $message_form[''error''] : $message[''error''];
    $message[''error_bot'']         = !empty( $message_form[''error_bot''] ) ? $message_form[''error_bot''] : $message[''error_bot''];
    $message[''error_unexpected'']  = !empty( $message_form[''error_unexpected''] ) ? $message_form[''error_unexpected''] : $message[''error_unexpected''];
    $message[''recaptcha_invalid''] = !empty( $message_form[''recaptcha_invalid''] ) ? $message_form[''recaptcha_invalid''] : $message[''recaptcha_invalid''];
    $message[''recaptcha_error'']   = !empty( $message_form[''recaptcha_error''] ) ? $message_form[''recaptcha_error''] : $message[''recaptcha_error''];


    // Bot Protection
    if( isset( $submits[ $prefix . ''botcheck'' ] ) ) {
        $botpassed = true;
    }

    if( !empty( $submits[ $prefix . ''botcheck'' ] ) ) {
        $botpassed = false;
    }

    if( $botpassed == false ) {
        echo ''{ "alert": "error","message": "'' . $message[''error_bot''] . ''" }'';
        exit;
    }


    // reCaptcha
    if( isset( $submits[''g-recaptcha-response''] ) ) {

        $recaptcha_data = array(
            ''secret'' => $recaptcha_secret,''response'' => $submits[''g-recaptcha-response'']
        );

        $rc_verify = curl_init();
        curl_setopt( $rc_verify,CURLOPT_URL,"https://www.google.com/recaptcha/api/siteverify" );
        curl_setopt( $rc_verify,CURLOPT_POST,true );
        curl_setopt( $rc_verify,CURLOPT_POSTFIELDS,http_build_query( $recaptcha_data ) );
        curl_setopt( $rc_verify,CURLOPT_SSL_VERIFYPEER,false );
        curl_setopt( $rc_verify,CURLOPT_RETURNTRANSFER,true );
        $rc_response = curl_exec( $rc_verify );

        $g_response = json_decode( $rc_response );

        if ( $g_response->success !== true ) {
            echo ''{ "alert": "error","message": "'' . $message[''recaptcha_invalid''] . ''" }'';
            exit;
        }
    }

    $html_title = !empty( $submits[''html_title''] ) ? $submits[''html_title''] : ''Form Response'';
    $forcerecaptcha = ( !empty( $submits[''force_recaptcha''] ) && $submits[''force_recaptcha''] != ''false'' ) ? true : false;
    $replyto = !empty( $submits[''replyto''] ) ? explode( '','',$submits[''replyto''] ) : false;

    if( $forcerecaptcha ) {
        if( !isset( $submits[''g-recaptcha-response''] ) ) {
            echo ''{ "alert": "error","message": "'' . $message[''recaptcha_error''] . ''" }'';
            exit;
        }
    }

    $mail->Subject = !empty( $submits[''subject''] ) ? $submits[''subject''] : ''Form response from your website'';
    $mail->SetFrom( $sender[''email''],$sender[''name''] );

    if( !empty( $replyto ) ) {
        if( count( $replyto ) > 1 ) {
            $replyto_e = $submits[ $replyto[0] ];
            $replyto_n = $submits[ $replyto[1] ];
            $mail->AddReplyTo( $replyto_e,$replyto_n );
        } elseif( count( $replyto ) == 1 ) {
            $replyto_e = $submits[ $replyto[0] ];
            $mail->AddReplyTo( $replyto_e );
        }
    }

    foreach( $recipients as $recipient ) {
        $mail->AddAddress( $recipient[''email''],$recipient[''name''] );
    }

    $unsets = array( ''prefix'',''subject'',''replyto'',''message'',$prefix . ''botcheck'',''g-recaptcha-response'',''force_recaptcha'',$prefix . ''submit'' );

    foreach( $unsets as $unset ) {
        unset( $submits[ $unset ] );
    }

    $fields = array();

    foreach( $submits as $name => $value ) {
        if( empty( $value ) ) continue;

        $name = str_replace( $prefix,'''',$name );
        $name = ucwords( str_replace( ''-'','' '',$name ) );

        if( is_array( $value ) ) {
            $value = implode( '',$value );
        }

        $fields[$name] = $value;
    }

    $response = array();

    foreach( $fields as $fieldname => $fieldvalue ) {
        $response[] = $fieldname . '': '' . $fieldvalue;
    }

    $referrer = $_SERVER[''HTTP_REFERER''] ? ''<br><br><br>This Form was submitted from: '' . $_SERVER[''HTTP_REFERER''] : '''';

    $body = implode( "<br>",$response ) . $referrer;

    $mail->MsgHTML( $body );
    $sendEmail = $mail->Send();

    if( $sendEmail == true ):
        if( $autores && !empty( $replyto_e ) ) {
            $send_arEmail = $autoresponder->Send();
        }

        echo ''{ "alert": "success","message": "'' . $message[''success''] . ''" }'';
    else:
        echo ''{ "alert": "error","message": "'' . $message[''error''] . ''<br><br><strong>Reason:</strong><br>'' . $mail->ErrorInfo . ''" }'';
    endif;

} else {
    echo ''{ "alert": "error","message": "'' . $message[''error_unexpected''] . ''" }'';
}

?>

解决方法

require ''PHPMailer/PHPMailer.php'';
require ''PHPMailer/SMTP.php'';
require ''PHPMailer/Exception.php'';

$mail = new PHPMailer\PHPMailer\PHPMailer();


try {
    $mail->IsSMTP(); // enable SMTP
    $mail->CharSet = ''UTF-8'';
    $mail->SMTPDebug = 2; // debugging: 1 = errors and messages,2 = messages only
    $mail->SMTPAuth = true; // authentication enabled
    $mail->SMTPSecure = ''ssl''; // secure transfer enabled REQUIRED for Gmail
    $mail->Host = "smtp.gmail.com";
    $mail->Port = 465; // or 587
    $mail->IsHTML(true);
    $mail->Username = "Your Email Address";
    $mail->Password = "Your Password";
    $mail->SetFrom("From Name");
    $mail->Subject = "Message Subject";
    $mail->Body ="Message Body ";
    $mail->AddAddress(''Sent email to this address'');

    if($mail->Send()) {
        // e-posta başarılı ile gönderildi
      echo ''success'';
    } else {
        echo ''error'';
    }
} catch (Exception $e) {
    echo ''error : ''.$e;
}

TypeError: ''Series'' objects are mutable,thus they cannot be hashed

EMAIL_BACKEND = ''django.core.mail.backends.smtp.EmailBackend''
EMAIL_HOST = ''smtp.gmail.com''
EMAIL_USE_TLS = True
EMAIL_USE_SSL = False
EMAIL_PORT = 587
EMAIL_HOST_USER =EMAIL_HOST_USER
EMAIL_HOST_PASSWORD = PASSWORD

"''Patriots'',''whitehouse''"

21/06/08 11:11:07,333 INFO DAGScheduler: Job 20 finished: collect at SendingMail.scala:14,took 0.078407 s
javax.mail.MessagingException: Could not connect to SMTP host: <smtp host>,port: 25,response: 421
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1960)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:642)
    at javax.mail.Service.connect(Service.java:295)
    at javax.mail.Service.connect(Service.java:176)
    at javax.mail.Service.connect(Service.java:125)
    at javax.mail.Transport.send0(Transport.java:194)
    at javax.mail.Transport.send(Transport.java:124)
    ...