/*
	- Flood Checker
	- Checks that the user is not spamming or "flooding" the database.
	
	$interval     - How many seconds between each post from this IP address
	$ip           - The IP to flood check, default is the user's IP
	*/
	
	public function floodCheck($interval = 15, $ip = null) {
		$success = true;
		
		if (file_exists("Floodcheck.txt")) {
			$file = fopen("Floodcheck.txt", "r");

			if ($ip == null)
				$ip = $_SERVER['REMOTE_ADDR'];
			
			// sort each line addresses
			while (($line = fgets($file)) !== false) {
				$line = trim($line);
				$flood = explode(",", $line);	

				// check if ip matches ours
				if ($flood[0] == $ip) {
					// check if the flood check is successful
					if ((time() - $flood[1]) < $interval)
						$success = false;
				}
			}
			
			fclose($file);
		}
		
		return $success;
	}