如何在PHP中发送邮件

要在PHP中发送邮件，您可以使用内置的mail函数或使用第三方库，如PHPMailer或SwiftMailer。

下面是使用mail函数发送邮件的示例代码：

$to = 'recipient@example.com';$subject = 'Subject of the email';$message = 'Body of the email';$headers = 'From: sender@example.com' . "\r\n";$headers .= 'Reply-To: sender@example.com' . "\r\n";$headers .= 'X-Mailer: PHP/' . phpversion();// 发送邮件mail($to, $subject, $message, $headers);

这是使用PHPMailer库发送邮件的示例代码：

require 'PHPMailerAutoload.php';$mail = new PHPMailer;$mail->isSMTP();$mail->Host = 'smtp.example.com';$mail->SMTPAuth = true;$mail->Username = 'sender@example.com';$mail->Password = 'password';$mail->SMTPSecure = 'tls';$mail->Port = 587;$mail->setFrom('sender@example.com', 'Sender Name');$mail->addAddress('recipient@example.com', 'Recipient Name');$mail->Subject = 'Subject of the email';$mail->Body = 'Body of the email';// 发送邮件if(!$mail->send()) {echo 'Message could not be sent.';echo 'Mailer Error: ' . $mail->ErrorInfo;} else {echo 'Message has been sent.';}

这是使用SwiftMailer库发送邮件的示例代码：

require_once 'vendor/autoload.php';$transport = (new Swift_SmtpTransport('smtp.example.com', 587, 'tls'))->setUsername('sender@example.com')->setPassword('password');$mailer = new Swift_Mailer($transport);$message = (new Swift_Message('Subject of the email'))->setFrom(['sender@example.com' => 'Sender Name'])->setTo(['recipient@example.com' => 'Recipient Name'])->setBody('Body of the email');// 发送邮件$result = $mailer->send($message);if($result) {echo 'Message has been sent.';} else {echo 'Message could not be sent.';}

请确保在代码中替换实际的邮件服务器和身份验证凭据，并根据需要进行其他设置，例如设置附件或HTML邮件。