接收SMTP邮件服务器的应答进行SMTP邮件传送过程
false/string smtp_loop(void)
none
成功时服务器应答信息，失败时空字符串("")或是没有接收到应答时false
<?php
include_once "/lib/sn_dns.php"; // including DNS library
include_once "/lib/sn_smtp.php"; // including SMTP library
smtp_hostname("from_domain.com"); // setting email sender's host name
// setting email sender's email address and name
smtp_account("from_id@from_domain.com", "from_name");
$subject = "email test from PHPoC";
$message = "Hi PHPoC\r\nThis is PHPoC test email\r\nGood bye\r\n";
// preparing to send an email
smtp_start("to_id@to_domain.com", "to_name", $subject, $message);
while(1)
{
$msg = smtp_loop();
if($msg === false)
usleep(1000);
elseif($msg == "")
;
else
echo "$msg\r\n";
}
?>