从PHP发送电子邮件的核心方法是使用其内置的mail()函数，但有几个现成的sdk可以简化集成:

Swiftmailer PHPMailer peppost(通过HTTP工作，因此可以避免SMTP端口阻塞问题) Sendmail

附注:我受雇于peppost公司。

这可以使用PHP的mail()函数实现。记住，邮件功能将不能在本地服务器上工作。

<?php
    $to      = 'nobody@example.com';
    $subject = 'the subject';
    $message = 'hello';
    $headers = 'From: webmaster@example.com'       . "\r\n" .
                 'Reply-To: webmaster@example.com' . "\r\n" .
                 'X-Mailer: PHP/' . phpversion();

    mail($to, $subject, $message, $headers);
?>

参考:

邮件

我尝试在我的快速时间，我有同样的问题，但经过适当的研究，我解决了它。以下是我的方法。您必须下载PHPMailer源文件，并在项目中手动包含所需的文件。

您可以从PHPMailer主页1下载带有源代码的ZIP文件，点击“克隆或下载”绿色按钮(在右侧)，然后选择“下载ZIP”。在要保存源文件的目录中解压缩包。

1来自:GitHub。 第二步:打开“(来自Gmail地址)谷歌帐户”，执行以下步骤:

禁用谷歌帐号的双因素密码验证。

Turn on Less Security. Allow third party app. There you Go.. <?php use PHPMailer\PHPMailer\PHPMailer; use PHPMailer\PHPMailer\Exception; require 'PHPMailer/src/Exception.php'; require 'PHPMailer/src/PHPMailer.php'; require 'PHPMailer/src/SMTP.php'; session_start(); if (isset($_POST['send'])) { $email = $_POST['email']; $subject = $_POST['subject']; $message = "I am trying"; //Load composer's autoloader $mail = new PHPMailer(true); try { //Server settings $mail->isSMTP(); $mail->Host = 'smtp.gmail.com'; $mail->SMTPAuth = true; $mail->Username = 'youremail@gmail.com'; $mail->Password = 'password'; $mail->SMTPOptions = array( 'ssl' => array( 'verify_peer' => false, 'verify_peer_name' => false, 'allow_self_signed' => true ) ); $mail->SMTPSecure = 'ssl'; $mail->Port = 465; //Send Email $mail->setFrom('youremail@gmail.com'); //Recipients $mail->addAddress($email); $mail->addReplyTo('youremail@gmail.com'); //Content $mail->isHTML(true); $mail->Subject = $subject; $mail->Body = $message; $mail->send(); $_SESSION['result'] = 'Message has been sent'; $_SESSION['status'] = 'ok'; } catch (Exception $e) { $_SESSION['result'] = 'Message could not be sent. Mailer Error: ' . $mail->ErrorInfo; $_SESSION['status'] = 'error'; echo 'Message could not be sent. Mailer Error: ' . $mail->ErrorInfo; } } header("location: forgotPassword.php");

对于大多数项目，我现在使用Swift mailer。这是一种非常灵活和优雅的面向对象的发送电子邮件的方法，它是由给我们提供流行的Symfony框架和Twig模板引擎的同一个人创建的。

基本用法:

require 'mail/swift_required.php';

$message = Swift_Message::newInstance()
    // The subject of your email
    ->setSubject('Jane Doe sends you a message')
    // The from address(es)
    ->setFrom(array('jane.doe@gmail.com' => 'Jane Doe'))
    // The to address(es)
    ->setTo(array('frank.stevens@gmail.com' => 'Frank Stevens'))
    // Here, you put the content of your email
    ->setBody('<h3>New message</h3><p>Here goes the rest of my message</p>', 'text/html');

if (Swift_Mailer::newInstance(Swift_MailTransport::newInstance())->send($message)) {
    echo json_encode([
        "status" => "OK",
        "message" => 'Your message has been sent!'
    ], JSON_PRETTY_PRINT);
} else {
    echo json_encode([
        "status" => "error",
        "message" => 'Oops! Something went wrong!'
    ], JSON_PRETTY_PRINT);
}

有关如何使用Swift mailer的更多信息，请参阅官方文档。

<?php
include "db_conn.php";//connection file
require "PHPMailerAutoload.php";// it will be in PHPMailer
require "class.smtp.php";// it will be in PHPMailer
require "class.phpmailer.php";// it will be in PHPMailer


$response = array();
$params = json_decode(file_get_contents("php://input"));

if(!empty($params->email_id)){

    $email_id = $params->email_id;
    $flag=false;
    echo "something";
    if(!filter_var($email_id, FILTER_VALIDATE_EMAIL))
    {
        $response['ERROR']='EMAIL address format error'; 
        echo json_encode($response,JSON_UNESCAPED_SLASHES);
        return;
    }
    $sql="SELECT * from sales where email_id ='$email_id' ";

    $result = mysqli_query($conn,$sql);
    $count = mysqli_num_rows($result);

    $to = "demo@gmail.com";
    $subject = "DEMO Subject";
    $messageBody ="demo message .";

    if($count ==0){
        $response["valid"] = false;
        $response["message"] = "User is not registered yet";
        echo json_encode($response);
        return;
    }

    else {

        $mail = new PHPMailer();
        $mail->IsSMTP();
        $mail->SMTPAuth = true; // authentication enabled
        $mail->IsHTML(true); 
        $mail->SMTPSecure = 'ssl';//turn on to send html email
        // $mail->Host = "ssl://smtp.zoho.com";
        $mail->Host = "p3plcpnl0749.prod.phx3.secureserver.net";//you can use gmail 
        $mail->Port = 465;
        $mail->Username = "demousername@example.com";
        $mail->Password = "demopassword";
        $mail->SetFrom("demousername@example.com", "Any demo alert");
        $mail->Subject = $subject;

        $mail->Body = $messageBody;
        $mail->AddAddress($to);
        echo "yes";

        if(!$mail->send()) {
           echo "Mailer Error: " . $mail->ErrorInfo;
       } 
       else {
           echo "Message has been sent successfully";
      }
    }

}
else{
    $response["valid"] = false;
    $response["message"] = "Required field(s) missing";
    echo json_encode($response);
}


?>

上面的代码为我工作。

纯文本电子邮件

<?php

$to       = 'name@example.com';
$subject  = 'Your email subject here';
$message  = 'Your message here';

// Carriage return type (RFC).
$eol = "\r\n";

$headers  = "Reply-To: Name <name@example.com>".$eol;
$headers .= "Return-Path: Name <name@example.com>".$eol;
$headers .= "From: Name <name@example.com>".$eol;
$headers .= "Organization: Hostinger".$eol;
$headers .= "MIME-Version: 1.0".$eol;
$headers .= "Content-type: text/plain; charset=utf-8".$eol;
$headers .= "X-Priority: 3".$eol;
$headers .= "X-Mailer: PHP".phpversion().$eol;


mail($to, $subject, $message, $headers);

使用html发送电子邮件

<?php

$to       = 'name@example.com';
$subject  = 'Your email subject here';
$message  = '
<html>
<head>
<title>Your '.$to.' as your contact email address</title>
</head>
<body>
<p>Hi, there!</p>
<p>It is a long established fact that '.$to.' reader will be distracted by the readable content of a page when looking at its layout</p>
</body>
</html>
';

// Carriage return type (RFC).
$eol = "\r\n";

$headers  = "Reply-To: Name <name@example.com>".$eol;
$headers .= "Return-Path: Name <name@example.com>".$eol;
$headers .= "From: Name <name@example.com>".$eol;
$headers .= "Organization: Hostinger".$eol;
$headers .= "MIME-Version: 1.0".$eol;
$headers .= "Content-type: text/html; charset=iso-8859-1".$eol;
$headers .= "X-Priority: 3".$eol;
$headers .= "X-Mailer: PHP".phpversion().$eol;


mail($to, $subject, $message, $headers);

邮件附附件

<?php

$url = "https://c.xkcd.com/random/comic/";
$ch  = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
// Must be set to true so that PHP follows any "Location:" header.
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// $a will contain all headers.
$a = curl_exec($ch);
// This is what you need, it will return you the last effective URL.
$url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);

$str  = file_get_contents($url.'info.0.json');
$json = json_decode($str, true);

// Get file info.
$imageTitle = $json['title'];

// Image url.
$imageUrl = $json['img'];

// Image alt text.
$imageAlt = $json['alt'];

// Image file.
$imageFile = file_get_contents($imageUrl);

$tokens = explode('/', $imageUrl);

// File name.
$fileName = $tokens[(count($tokens) - 1)];

// File extension.
$ext = explode(".", $fileName);

// File type.
$fileType = $ext[1];

// File size.
$header = get_headers($imageUrl, true);

$fileSize = $header['Content-Length'];




$to      = 'name@example.com';
$subject = "Enjoy reading today's most interesting XKCD comics";
$message = '
<html>
<head>
<title>Your email '.$to.' is listed in our XKCD comics subscribers.</title>
</head>
<body> 
    <h1>'.$imageTitle.'</h1>
    <img src='.$imageUrl.' alt='.$imageAlt.'>
</body>
</html>';

// File.
$content = chunk_split(base64_encode($imageFile));

// A random hash will be necessary to send mixed content.
$semiRand     = md5(time());
$mimeBoundary = '==Multipart_Boundary_x{$semiRand}x';

// Carriage return type (RFC).
$eol = "\r\n";

$headers  = 'Reply-To: Name <name@example.com>'.$eol;
$headers .= 'Return-Path: Name <name@example.com>'.$eol;
$headers .= 'From: Name <name@example.com>'.$eol;
$headers .= 'Organization: Hostinger'.$eol;
$headers  = 'MIME-Version: 1.0'.$eol;
$headers .= "Content-Type: multipart/mixed; boundary=\"{$mimeBoundary}\"".$eol;
$headers .= 'Content-Transfer-Encoding: 7bit'.$eol;
$headers .= 'X-Priority: 3'.$eol;
$headers .= 'X-Mailer: PHP'.phpversion().$eol;

// Message.
$body  = '--'.$mimeBoundary.$eol;
$body .= "Content-Type: text/html; charset=\"UTF-8\"".$eol;
$body .= 'Content-Transfer-Encoding: 7bit'.$eol;
$body .= $message.$eol;

// Attachment.
$body .= '--'.$mimeBoundary.$eol;
$body .= "Content-Type:{$fileType}; name=\"{$fileName}\"".$eol;
$body .= 'Content-Transfer-Encoding: base64'.$eol;
$body .= "Content-disposition: attachment; filename=\"{$fileName}\"".$eol;
$body .= 'X-Attachment-Id: '.rand(1000, 99999).$eol;
$body .= $content.$eol;
$body .= '--'.$mimeBoundary.'--';

$success = mail($to, $subject, $body, $headers);

if ($success === false) {
    echo '<h3>Failure</h3>';
    echo '<p>Failed to send email to '.$to.'</p>';
} else {
    echo '<p>Your email has been sent to '.$to.' successfully.</p>';
}

电子邮件验证

<?php

function verifyLink() {
    require 'db-connection.php';

    $mysqli->select_db($dbname);

    $sql = "SELECT `email`, `hash` FROM `Users` ORDER BY `active`";

    $result = $mysqli->query($sql);

    $row = $result->fetch_row();
    
    if ($_SERVER['HTTPS'] !== '' && $_SERVER['HTTPS'] === 'on') {
    return '<a href="https://'.$_SERVER['HTTP_HOST'].'/verify.php?email='.$row[0].'&hash='.$row[1].'">Verify contact email</a>';
    } else {
    return '<a href="http://'.$_SERVER['HTTP_HOST'].'/verify.php?email='.$row[0].'&hash='.$row[1].'">Verify contact email</a>';
    }

    $mysqli->close();
    
}

$to       = 'name@example.com';
$subject  = 'Verify your XKCD contact email address';
$message  = '
<html>
<head>
<title>Verify '.$to.' as your contact email address</title>
</head>
<body>
<p>Hi, there!</p>
<p>Please verify that you want to use '.$to.' as the contact email address for your XKCD account</p>
<p>XKCD will use this email to tell you about interesting comics updates.</p>
<div>'.verifyLink().'</div>
<h3>Do not recognise this activity?</h3>
<p>If you did not add '.$to.' to your XKCD account, ignore this email and that address will not be added to your XKCD account. Someone may have made a mistake while typing their own email address.</p>
</body>
</html>
';

// Carriage return type (RFC).
$eol = "\r\n";

$headers  = "Reply-To: Name <name@example.com>".$eol;
$headers .= "Return-Path: Name <name@example.com>".$eol;
$headers .= "From: Name <name@example.com>".$eol;
$headers .= "Organization: Hostinger".$eol;
$headers .= "MIME-Version: 1.0".$eol;
$headers .= "Content-type: text/html; charset=iso-8859-1".$eol;
$headers .= "X-Priority: 3".$eol;
$headers .= "X-Mailer: PHP".phpversion().$eol;


mail($to, $subject, $message, $headers);