EDIT: Nevermind... literally as soon as i posted this, i figured it out... I feel like an idiot now. The solution is I needed to add a parent::connect(DB_HOST, DB_USER, DB_PASS) and $this->select_db to the code apparently
Alrighty, i've been working on this code all day and i've hit a snag. and i might just be that i cannot do exactly it is what i want to do (I googled the hell out of the subject but mostly came up with non related articles, and one article that said i could do what i want...)

but anyway, I've got two classes; siteSettings and siteHeader. siteSettings extends Mysqli and siteHeader extends siteSettings. when i try to connect through the database defined in siteSettings within the siteHeader's coding. I get an error that say mysqli::query cannot fetch siteHeader on line 28.

PHP Code:
<?php class siteHeader extends siteSetting 

public 
$html
public 
$pid
function 
__construct() { 
parent::connect(DB_HOSTDB_USERDB_PASS); parent::select_db('thc_settings'); 
parent::__construct(); 
$this->pid $_GET['pid']; 
$this->html .= "<body>"
$this->html .="<div id='site_header'>"
$this->constructHeader(); 
$this->constructMenu(); 
$this->html .="</div>"
$this->html .= "</body>"
echo 
$this->html

function 
constructHeader() 

$this->html .= '<h1>'.SITE_NAME.'</h1>';
 } 
function 
constructMenu() 

$que parent::query('SELECT * FROM pages'); $row $que->fetch_array(); 
echo 
$row[0]; } }
PHP Code:
<?php 
class siteSetting extends mysqli 

private 
$header
private 
$meta
function 
__construct() { 
$meta ''
$header ''
parent::connect(DB_HOSTDB_USERDB_PASS); 
//* Check if The Site is Online, DIE if offline 
$this->siteStatus(); 
//* Get the Meta Information for the site, continue load 
$this->getSiteMeta(); 
$this->getTheme(); 
echo 
$this->header
$this->close(); } 
function 
siteStatus() { 
$this->select_db("THC_SETTINGS"); 
$sql "SELECT siteStatus FROM settings LIMIT 1;"
$que $this->query($sql); 
if(!
$que

die(
mysqli_error($this)); 

else 

while(
$row $que->fetch_array()) 

if(
$row[0] == 'on'

NULL

else { 
die; 
}
 } 


function 
getSiteName() { 
parent::connect(DB_HOSTDB_USERDB_PASS); 
$this->select_db('THC_SETTINGS'); 
$sql "SELECT siteTitle FROM settings LIMIT 1;"
$que $this->query($sql); 
if(!
$que

die(
mysqli_error($this)); 

else { 
$row $que->fetch_array(); 
define("SITE_NAME"$row[0]); 


function 
getSiteMeta() { 
$this->select_db('THC_SETTINGS'); 
$sql "SELECT siteMeta, siteDescription FROM settings LIMIT 1;"
$que $this->query($sql); 
if(!
$que) { 
die(
mysqli_error($this)); 

else { 
while(
$row $que->fetch_array()) { 
$this->getSiteName(); 
$keywords $row[0]; 
$desc $row[1]; 
$this->meta .= '<html>'
$this->meta .= '<head>'
$this->meta .= '<title>'.SITE_NAME.'</title>'
$this->meta .= '<meta http-equiv="description" content="'.$desc.'">'
$this->meta .= '<meta http-equiv="keywords" content="'.$keywords.'">'; } 
return 
$this->header .= $this->meta


function 
getTheme() { 
$this->select_db('THC_SETTINGS'); 
$que $this->query('SELECT siteTheme FROM settings'); if(!$que) { define('SITE_THEME''default'); } else { $row $que->fetch_array(); define('SITE_THEME'$row[0]); } return $this->header .= "<link rel='stylesheet' href='./style/".$row[0]."/style.css'>"; } } ?>
also; i appoligize for the sloppiness of my code... its been a good two years since i've worked with PHP and my brains still readjusting to the MATRIX.