/*
	- Sanitize Input
	- Helps reduce security risks and minimalises the possibility of SQL injection.
	
	$string     - The string you wish to sanitize before entering into the database.
	$level      - The level of security:
	               > 1 = adds slashes to prevent SQL injection
				   > 2 = adds slashes + htmlspecialchars to turn HTML tags into
				         HTML entities (eg. <html> becomes &lt;html&gt;)
				   > 3 = add slashes + strip_tags to remove all HTML tags.
	*/
	
	public function sanitizeInput($string, $level = 1) {
		
		switch ($level) {
		case 1:
			$string = addslashes($string);
			break;
		case 2:
			$string = htmlspecialchars(addslashes($string));
			break;
		case 3:
			$string = strip_tags(addslashes($string));
			break;
		}
		
		return $string;
		
	}