网上找到的两个PHP发送邮件的例子，很不错，贴出来给初学者参考吧（不知道是否有兄弟曾贴过），呵呵（2

作者：袖梨 2022-07-02

Advanced Example
Here we will show the full capabilities of the PHP mail function.
PHP Code:
echo "";
$recipient = "Kris Arndt ,[email protected]";
$subject = "Testing the mail function";
$message = "Hello! This is the body of the message. ";
$extra = "From: [email protected] Reply-To: [email protected] ";
mail ($recipient, $subject, $message, $extra);
echo "Sending mail...";
echo "";
?>

We send an email to two people this time, by putting two email addresses in the recipient field and separating them with commas.
The fourth parameter holds extra headers for the email. We specify who the email was from and who the recipient should reply to. When entering multiple headers, separate them with the line feed and new line combination (' ').