socket server not working with command lines - php

Question

<?php
if(!($sock = socket_create(AF_INET, SOCK_STREAM, 0)))
{
$errorcode = socket_last_error();
$errormsg = socket_strerror($errorcode);
die("Couldn't create socket: [$errorcode] $errormsg \n");
}
echo "Socket created \n";
// Bind the source address
if( !socket_bind($sock, "127.0.0.1" , 5000) )
{
$errorcode = socket_last_error();
$errormsg = socket_strerror($errorcode);
die("Could not bind socket : [$errorcode] $errormsg \n");
}
echo "Socket bind OK \n";
if(!socket_listen ($sock , 10))
{
$errorcode = socket_last_error();
$errormsg = socket_strerror($errorcode);
die("Could not listen on socket : [$errorcode] $errormsg \n");
}
echo "Socket listen OK \n";
echo "Waiting for incoming connections... \n";
//Accept incoming connection - This is a blocking call
$client = socket_accept($sock);
//display information about the client who is connected
if(socket_getpeername($client , $address , $port))
{
echo "Client $address : $port is now connected to us.";
}
socket_close($client);
socket_close($sock);
?>
This code not working with command line.
No output is display in commend line after enter
But when i try in browser it works in infinite loop.
May be this is fine or another way to run a service in php

Answer 1

These codes build a tcp server,You can use telnet or netcat to access the server.
You also can use browser to access the server,like "http://127.0.0.1:5000/".Now you will see the command line output.
socket_accept blocks the proccess,until a request reach.You can visit this page for more information.