Code is not getting executed when I include this class PHP - php

Question

I took good care to create this class but I am not sure what is wrong with it. The code runs perfectly if I don't have any content inside,
class TemplateOne{
}
But once I run this code it breaks,
<?php
class TemplateOne {
//Properties
protected $_bgColor;
protected $_logoImagePath;
protected $_headerText;
protected $_leftContentHeader;
protected $_rightContentHeader;
protected $_leftContentBody;
protected $_rightContentBody;
protected $_footer;
protected $_mediaIframe;
protected $_mediaHeight = '';
protected $_mediaWidth = '';
//DB communication
public $DB;
//Constructor
public function __construct(){
//Connect database in construct and close connection in destruct
$config = array();
$config['host'] = 'localhost';
$config['user'] = 'root';
$config['pass'] = 'root';
$config['database'] = 'fanpage_application';
$this->DB = new DB($config);
//init variables
populateDataFromDataBase();
}
//Functions
public function populateDataFromDataBase() {
//Get bgcolor
$this->DB->("SELECT backgroundimage FROM template_style_data WHERE styleid='#list_level'");
$data = $this->DB->Get();
foreach($data as $key => $value)
{
echo $value['backgroundimage'];
}
}
//Getters
public function getBgColor()
{
return $this->_bgColor;
}
public function getLogoImagePath()
{
return $this->_logoImagePath;
}
public function getHeaderText()
{
return $this->_headerText;
}
public function getLeftContentHeader()
{
return $this->_leftContentHeader;
}
public function getRightContentHeader()
{
return $this->_rightContentHeader;
}
public function getLeftContentBody()
{
return $this->_leftContentBody;
}
public function getRightContentBody()
{
return $this->_rightContentBody;
}
public function getFooter()
{
return $this->_footer;
}
public function getMediaIframe()
{
return $this->_mediaIframe;
}
//Setters
public function setBgColor($bgColor)
{
$this->_bgColor = $bgColor;
}
public function setLogoImagePath($logoImagePath)
{
$this->_logoImagePath = $logoImagePath;
}
public function setHeaderText($headerText)
{
$this->_headerText = $headerText;
}
public function setLeftContentHeader($leftContentHeader)
{
$this->_leftContentHeader = $leftContentHeader;
}
public function setRightContentHeader($rightContentHeader)
{
$this->_rightContentHeader = $rightContentHeader;
}
public function setLeftContentBody($leftContentHeader)
{
$this->_leftContentBody = $leftContentHeader;
}
public function setRightContentBody($rightContentBody)
{
$this->_rightContentBody = $rightContentBody;
}
public function setFooter($footer)
{
$this->_footer = $footer;
}
public function setMediaIframe($mediaIframe)
{
$this->_mediaIframe = $mediaIframe;
}
}
?>

Answer 1

You are missing $this-> from your call to populateDataFromDataBase.

Answer 2

Where is the DB class coming from? You may have to include the correct class definition file if it is not already.
$this->DB = new DB($config);
The following is not legal syntax. You will need to actually call a function by name.
$this->DB->("SELECT backgroundimage FROM template_style_data WHERE styleid='#list_level'");
Unless you have another function in the global scope named populateDataFromDataBase which is what you want to call, you will need to add $this-> before you try to call it in your constructor.
populateDataFromDataBase();

Answer 3

Here is your error:
$this->DB->("SELECT backgroundimage FROM template_style_data WHERE styleid='#list_level'");
This is not valid syntax, you need to call a method after $this->DB.

Answer 4

As far as I'm concerned there is only one possible answer: check your PHP errors http://php.net/manual/en/function.error-reporting.php
at least (in devevlopment only, don't show errors in production):
ini_set('display_errors', 1);
error_reporting(-1);