Something

<?php

class auction {

    function __construct() {
    	$this->db = new db();
    	$this->Args = func_get_args();
    	if(count($this->Args) == 1) {
    		$this->direction = $this->Args[0];
    	}
    	if(count($this->Args) > 1) {
    		$this->direction = $this->Args[0];
    		$this->auction_data = $this->db->getData(AUCTION_TABLE, "*", "auction_id", $this->Args[1]);
    	}
    }

    function bid($data) {
		if(time() >= strtotime($this->auction_data[0]['start_time']) && time() <= $this->auction_data[0]['end_time']) {
			if($this->direction == "normal") {
				if($data['amount'] < $this->auction_data[0]['minmax']) {
					return false;
				}
			}
			else {
				if($data['amount'] > $this->auction_data[0]['minmax']) {
					return false;
				}
			}
			$before_end = mktime(date("H", $this->auction_data[0]['end_time']), date("i", $this->auction_data[0]['end_time']) - AUCTION_INTERVAL, date("m", $this->auction_data[0]['end_time']), date("d", $this->auction_data[0]['end_time']), date("Y", $this->auction_data[0]['end_time']));
			$after_end = mktime(date("H", $this->auction_data[0]['end_time']), date("i", $this->auction_data[0]['end_time']) + AUCTION_INTERVAL, date("m", $this->auction_data[0]['end_time']), date("d", $this->auction_data[0]['end_time']), date("Y", $this->auction_data[0]['end_time']));

	    	if(time() >= $before_end) {
				$update_data = array("end_time" => $after_end);
				$update_result = $this->db->update(AUCTION_TABLE, "auction_id", $this->auction_data[0]['auction_id'] );
	    	}
	    	$result = $this->db->add(BIDS_TABLE, $data);
	    	if($result) {
	    		return true;
	    	}


		}
		else {
			return false;
		}
    }



}
?>