网站生成二维码，抽奖

二维码

<?php
$urlToEncode="http://idc.widuu.cn";
generateQRfromGoogle($urlToEncode);
function generateQRfromGoogle($chl,$widhtHeight ='150',$EC_level='L',$margin='0')
{
 $url = urlencode($url); 
 echo '<img src="http://chart.apis.google.com/chart?chs='.$widhtHeight.'x'.$widhtHeight.'&cht=qr&chld='.$EC_level.'|'.$margin.'&chl='.$chl.'" alt="QR code" widhtHeight="'.$size.'" widhtHeight="'.$size.'"/>';
}

<?php
/**
 * “抽奖”函数
 *
 * @param integer $first	起始编号
 * @param integer $last		结束编号
 * @param integer $total	获奖人数
 *
 * @return string
 *
*/
function isWinner($first, $last, $total)
{
	$winner = array();
	for ($i=0;;$i++)
	{
		$number = mt_rand($first, $last);
		if (!in_array($number, $winner))
			$winner[] = $number;	// 如果数组中没有该数，将其加入到数组
		if (count($winner) == $total)	break;
	}
	return implode(' ', $winner);
}
// for test
echo isWinner(1, 100, 30);