<?
$address =" trap17.com"; //Here you can specify the address you want to check ports
$port = "80"; //Here you can specify the port you want to check from $address
$checkport = fsockopen($address, $port, $errnum, $errstr, 2); //The 2 is the time of ping in secs

//Here down you can put what to do when the port is closed
if(!$checkport){
       echo "The port ".$port." from ".$address." seems to be closed.";  //Only will echo that msg
}else{

//And here, what you want to do when the port is open
       echo "The port ".$port." from ".$address." seems to be open."; //The msg echoed if port is open
}
?>