无法使用PHP shell_exec（）执行telnet命令
我正在尝试使用telnet和php进行邮件验证。整个过程在终端中很好，但是当我使用php无法使用PHP shell_exec（）执行telnet命令,php,networking,telnet,email-validation,shell-exec,Php,Networking,Telnet,Email Validation,Shell Exec,我正在尝试使用telnet和php进行邮件验证。整个过程在终端中很好，但是当我使用phpshell\u exec（）时，它只运行到Telnet connection命令。一旦连接了telnet，其余的telnet特定命令将不再工作 我们是否需要使用php以其他方式执行telnet 更新：我正在尝试复制教程 这是我的密码 public function mailtest(Request $request){ //Taking input email $email =
shell\u exec（）public function mailtest(Request $request){
//Taking input email
$email = $request->input("email");
$divide = explode("@", $email);
//Find out the Domain
$server = $divide[1];
$response = shell_exec("nslookup -q=mx $server");
//Response of the nslookup
print_r($response);
$mailServerList = explode(PHP_EOL, $response);
$line = $mailServerList[4];
$serverArr = preg_split('/\s+/', $line);
$n = sizeof($serverArr);
$mailServer = $serverArr[$n-1];
//Printing out the mail server out of the nslookup response
print_r($mailServer);
//Executing Telnet command
$telnet = shell_exec("telnet $mailServer 25");
print_r("telnet response ".$telnet);
//Telnet Helo
$helo = shell_exec("Helo testing.com");
print_r("Helo response ".$helo);
//Telnet mail from
$from = shell_exec('mail from: testing@gmail.com');
print_r("MAil from response ".$from);
//Telnet RCPT to
$finalResponse = shell_exec("rcpt to: $email");
print_r("Mail to response ".$finalResponse);
}
Server: 10.0.80.11
Address: 10.0.80.11#53
Non-authoritative answer:
gmail.com mail exchanger = 5 gmail-smtp-in.l.google.com.
gmail.com mail exchanger = 10 alt1.gmail-smtp-in.l.google.com.
gmail.com mail exchanger = 40 alt4.gmail-smtp-in.l.google.com.
gmail.com mail exchanger = 30 alt3.gmail-smtp-in.l.google.com.
gmail.com mail exchanger = 20 alt2.gmail-smtp-in.l.google.com.
Authoritative answers can be found from:
gmail-smtp-in.l.google.com internet address = 173.194.64.27
gmail-smtp-in.l.google.com has AAAA address 2607:f8b0:4003:c02::1a
alt1.gmail-smtp-in.l.google.com internet address = 173.194.219.27
alt1.gmail-smtp-in.l.google.com has AAAA address 2607:f8b0:4002:c03::1b
alt4.gmail-smtp-in.l.google.com internet address = 64.233.190.26
alt4.gmail-smtp-in.l.google.com has AAAA address 2800:3f0:4003:c01::1b
alt3.gmail-smtp-in.l.google.com internet address = 74.125.141.26
alt3.gmail-smtp-in.l.google.com has AAAA address 2607:f8b0:400c:c06::1a
alt2.gmail-smtp-in.l.google.com internet address = 173.194.205.27
alt2.gmail-smtp-in.l.google.com has AAAA address 2607:f8b0:400d:c02::1b
gmail-smtp-in.l.google.com.telnet response Trying 2607:f8b0:4003:c02::1a...
Connected to gmail-smtp-in.l.google.com.
Escape character is '^]'.
Helo response
MAil from response No message, no subject; hope that's ok
Mail to response
shell\u exec（）shell\u exec（）如果你真的坚持使用自己的东西，请查看现有的答案，例如或PHP的。除非绝对需要，否则我会避免这样做，因为这样做效率很低。此外，出于安全原因，Web服务器通常被配置为不允许启动新进程，因此，如果您的代码在从命令行而不是在Web服务器内部运行时工作，请记住这一区别。shell\u exec不适合这样做（请参阅Ulrich的解释）
fsockopen$fp = @fsockopen('yourMailServer.com', 9001);
if ($fp) {
fwrite($fp, "username\n");
fwrite($fp, "password\n");
while ($line = fread($fp, 2048)) {
// do things with $line
}
} else {
//return error
}
在参考了@Lavi的答案之后，这就是我如何解决问题的方法<代码>FPUT完成了这一技巧，而不是
fwrite$connect = @fsockopen($mailServer, 25);
if($connect){
fputs ($connect , "HELO $mailServer\r\n");
$out = fgets ($connect, 1024);
$details .= $out."\n";
fputs ($connect , "MAIL FROM: <$fromemail>\r\n");
//$from = fgets ($connect, 1024);
fputs ($connect , "RCPT TO: <$toemail>\r\n");
//$to = fgets ($connect, 1024);
fputs ($connect , "QUIT");
fclose($connect);
}
$connect=@fsockopen（$mailServer，25）；
如果（$connect）{
fputs（$connect，“HELO$mailServer\r\n”）；
$out=fgets（$connect，1024）；
$details.=$out.“\n”；
fputs（$connect，“邮件发件人：\r\n”）；
//$from=fgets（$connect，1024）；
fputs（$connect，“RCPT TO:\r\n”）；
//$to=fgets（$connect，1024）；
fputs（$connect，“QUIT”）；
fclose（$connect）；
}
imapimap.*IMAPTelnet myMailServer.com 25Helo hifsockopenfsockopenfsockopen