利用PHP邮件函数实现邮件发送和接收功能的方法总结

$to = "recipient@example.com";
$subject = "Hello, World!";
$message = "This is a test email.";

$headers = 'From: sender@example.com' . "
" .
    'Reply-To: sender@example.com' . "
" .
    'X-Mailer: PHP/' . phpversion();

if (mail($to, $subject, $message, $headers)) {
    echo "Email sent successfully.";
} else {
    echo "Failed to send email.";
}

$host = "{imap.example.com:993/imap/ssl}";
$username = "recipient@example.com";
$passWord = "password";

$mailbox = imap_open($host, $username, $password);

$mail_count = imap_num_msg($mailbox);

for ($i = 1; $i <= $mail_count; $i++) {
    $header = imap_header($mailbox, $i);
    $subject = $header->subject;
    $from = $header->fromaddress;
    $message = imap_fetchbody($mailbox, $i, 1);
    
    // 对获取到的邮件进行处理
    // ...
}

imap_close($mailbox);