Methods for detecting TCP ports in php

This article mainly introduces the methods for detecting TCP ports in php, and analyzes the techniques for detecting tcp ports in php, for more information about how to implement TCP port detection in php, see the following example. Share it with you for your reference. The details are as follows:

This program can check whether the current port is available:

<? Phpclass Health {public static $ status; public function _ construct () {} public function check ($ ip, $ port) {$ sock = socket_create (AF_INET, SOCK_STREAM, SOL_TCP ); socket_set_nonblock ($ sock); socket_connect ($ sock, $ ip, $ port); socket_set_block ($ sock); self :: $ status = socket_select ($ r = array ($ sock), $ w = array ($ sock), $ f = array ($ sock), 5); return (self :: $ status);} public function checklist ($ lst) {} public function status () {switch (self: $ status) {case 2: echo "Closed \ n "; break; case 1: echo "Openning \ n"; break; case 0: echo "Timeout \ n"; break ;}}$ ip = '2017. 168.2.10 '; $ port = 80; $ health = new Health (); $ health-> check ($ ip, $ port); $ health-> status ();

I hope this article will help you with php programming.