recording response from <?system('telnet aspmx.l.google.com 25')?>

[Chat]

hi, i'm trying to make a script to validate email addresses. i start with:

 

<?getmxrr('birminghampr.co.uk',$mxhosts);

 

then i try:

$x=system("telnet $mxhosts[0] 25", $y);

 

...and 3 lines are printed:

 

Trying 64.233.183.27...
Connected to ASPMX.L.GOOGLE.COM.
Escape character is '^]'.

 

while $x becomes the last line generated by the system...

Escape character is '^]'.

...while $y becomes the number "1" to say something like it was a good command.... but if i try to manually "telnet aspmx.l.google.com 25" i get an additional response banner as the 4th line:

220 mx.google.com ESMTP i4si16*********.1

...now what i need to do is somehow grab this 4th line using PHP! any ideas anyone? any help would be very much appreciated.

[corbin]

Instead of using a system call, do the connection making inside of PHP.

 

 

http://php.net/fsockopen

 

or

 

http://php.net/socket_create if you feel like doing it the long way

[Chat]

hi corbin, thanks for the reply. i normally use file_get_contents and file_put_contents, sometimes curl, and sometimes file()... but i've never used these socket functions before

 

is there any chance you could give me some example code of how to a "telnet aspmx.l.google.com 25" and record the response?

[corbin]

<?php

$sock = fsockopen("aspmx.l.google.com", 25, $errno, $errstr, (float) 0.5);
if($sock) {
    $line1 = fgets($sock);
}
else {
    echo "Unable to connect to host.";
}

[Chat]

thanks corbin, you're a genius, it works just as i needed 

[corbin]

No problem.  Glad it worked.