Can't connect to database

[sales.amaz...@gmail.com]

My dbconfig.php:

<?php

/**

* db_config.php

* MySQL connection parameters for 140dev Twitter database server

* Fill in these values for your database

* Latest copy of this code: http://140dev.com/free-twitter-api-source-code-library/

* @author Adam Green <140...@gmail.com>

* @license GNU Public License

* @version BETA 0.30

*/

  $db_host = '127.0.0.1';

  $db_user = ‘root’;

  $db_password = ‘’;

  $db_name = ‘Realtime’;

// MySQL time zone setting to normalize dates

define('TIME_ZONE','America/New_York');

?> 

When I start the script in the terminal, it loads up nicely, but when it wants to write to the database i get these messages

Warning: mysqli_query() expects parameter 1 to be mysqli, boolean given in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_lib.php on line 97

Warning: mysqli_error() expects parameter 1 to be mysqli, boolean given in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_lib.php on line 47

So I figured it can't connect to the database. 

I ran the db_test.php from the browser. It gave me this:


Notice: Use of undefined constant ‘root’ - assumed '‘root’' in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_config.php on line 12

Notice: Use of undefined constant ‘’ - assumed '‘’' in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_config.php on line 13

Notice: Use of undefined constant ‘Realtime’ - assumed '‘Realtime’' in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_config.php on line 14

Warning: mysqli_connect(): (HY000/1045): Access denied for user '‘root’'@'localhost' (using password: YES) in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_lib.php on line 23

Warning: fopen(error_log.txt): failed to open stream: Permission denied in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_lib.php on line 59

Warning: fwrite() expects parameter 1 to be resource, boolean given in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_lib.php on line 62

Warning: fclose() expects parameter 1 to be resource, boolean given in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_lib.php on line 63
Twitter Database Tables

Warning: mysqli_query() expects parameter 1 to be mysqli, boolean given in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_lib.php on line 89

Warning: mysqli_error() expects parameter 1 to be mysqli, boolean given in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_lib.php on line 47

Warning: mysqli_fetch_row() expects parameter 1 to be mysqli_result, null given in /Applications/XAMPP/xamppfiles/htdocs/Realtime/db/db_test.php on line 15


Strange thing is, that when I wrote my own test: 

<?php

$user = 'root';

$pass = '';

$db = 'Realtime';

$db = new mysqli('localhost', $user, $pass, $db) or die("Unable to connect");

echo "Great work";

?>

It passed.. 

I have no clue what I'm doing wrong