An one-off PHP UDP server to listen on a UDP port and print the text received. Can be used as a very basic UDP log listener.

udptextd.php

#!/usr/bin/php -f
<?php
error_reporting(~E_WARNING);
//Create a UDP socket
if(!($sock = socket_create(AF_INET, SOCK_DGRAM, 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, "0.0.0.0" , 4444) ) {
    $errorcode = socket_last_error();
    $errormsg = socket_strerror($errorcode);
    die("Could not bind socket : [$errorcode] $errormsg \n");
}
echo "Socket bind OK \n";

//Receive some data
while(1) {
    $r = socket_recvfrom($sock, $buf, 5120, 0, $remote_ip, $remote_port);
    echo "$remote_ip : $remote_port -- " . $buf;
}
socket_close($sock);