gistfile1.txt

class Predictable {
	
	private $seed;
	
	public function __construct($seed){
		$this->seed = $seed*100;
	}
	
	#returns a predictable number based on an integer seed
	public function pred(){
		$this->seed++;
		$slice = strtoupper(substr(md5($this->seed),8,8));
		return abs((int)hexdec($slice));
	}
	
	public function pred_array($array){
		$key = $this->pred()%count($array);
		return $array[$key];
	}
	
}