notice: undefined index: REMOTE_ADDR - php

Question

I've been trying to follow this tutorial and I did everything it said. I clicked the download button, installed XAMPP, copied the directory of the only server.php file i found, and put it in the following line, and ran it in the shell like it said.
php -q c:\xampp1\php\pear\adodb\server.php
But I got a bunch of warnings about files not being included and other stuff, which i don't understand because I downloaded everything it said and followed the tutorial. This is a screenshot of all my errors (I can't copy paste in xampp shell):
EDIT: Here is the server.php files code:
<?php
/**
* #version V4.93 10 Oct 2006 (c) 2000-2012 John Lim (jlim#natsoft.com). All rights reserved.
* Released under both BSD license and Lesser GPL library license.
Whenever there is any discrepancy between the two licenses,
the BSD license will take precedence.
*/
/* Documentation on usage is at http://php.weblogs.com/adodb_csv
*
* Legal query string parameters:
*
* sql = holds sql string
* nrows = number of rows to return
* offset = skip offset rows of data
* fetch = $ADODB_FETCH_MODE
*
* example:
*
* http://localhost/php/server.php?select+*+from+table&nrows=10&offset=2
*/
/*
* Define the IP address you want to accept requests from
* as a security measure. If blank we accept anyone promisciously!
*/
$ACCEPTIP = '127.0.0.1';
/*
* Connection parameters
*/
$driver = 'mysql';
$host = 'localhost'; // DSN for odbc
$uid = 'root';
$pwd = 'garbase-it-is';
$database = 'test';
/*============================ DO NOT MODIFY BELOW HERE =================================*/
// $sep must match csv2rs() in adodb.inc.php
$sep = ' :::: ';
include('./adodb.inc.php');
include_once(ADODB_DIR.'/adodb-csvlib.inc.php');
function err($s)
{
die('**** '.$s.' ');
}
// undo stupid magic quotes
function undomq(&$m)
{
if (get_magic_quotes_gpc()) {
// undo the damage
$m = str_replace('\\\\','\\',$m);
$m = str_replace('\"','"',$m);
$m = str_replace('\\\'','\'',$m);
}
return $m;
}
///////////////////////////////////////// DEFINITIONS
$remote = $_SERVER["REMOTE_ADDR"];
if (!empty($ACCEPTIP))
if ($remote != '127.0.0.1' && $remote != $ACCEPTIP)
err("Unauthorised client: '$remote'");
if (empty($_REQUEST['sql'])) err('No SQL');
$conn = ADONewConnection($driver);
if (!$conn->Connect($host,$uid,$pwd,$database)) err($conn->ErrorNo(). $sep . $conn->ErrorMsg());
$sql = undomq($_REQUEST['sql']);
if (isset($_REQUEST['fetch']))
$ADODB_FETCH_MODE = $_REQUEST['fetch'];
if (isset($_REQUEST['nrows'])) {
$nrows = $_REQUEST['nrows'];
$offset = isset($_REQUEST['offset']) ? $_REQUEST['offset'] : -1;
$rs = $conn->SelectLimit($sql,$nrows,$offset);
} else
$rs = $conn->Execute($sql);
if ($rs){
//$rs->timeToLive = 1;
echo _rs2serialize($rs,$conn,$sql);
$rs->Close();
} else
err($conn->ErrorNo(). $sep .$conn->ErrorMsg());
?>
I was going to google the errors but I think they are self explanatory, I just don't know why this code would give me includes when they aren't there and why it would give me parameters that aren't defined as in the final notice at the bottom of the screen cap. I'm guessing I have to put an IP address somewhere but I'm not sure where and if that's all. BTW I have a mysql database I can log into, I just don't know how to combine it with this.
How do I proceed in following this tutorial and get a running chat working?
(edit: I updated the screencap to reflect adding the 1 to xampp in the line but its mostly the same)

Answer 1

Because you're running PHP from the command line, there is no value in $_SERVER["REMOTE_ADDR"]. You should change that line to:
$remote = isset($_SERVER["REMOTE_ADDR"]) ? $_SERVER["REMOTE_ADDR"] : '127.0.0.1';
or if you're using PHP7
$remote = $_SERVER["REMOTE_ADDR"] ?? '127.0.0.1';