<?php;;
for ($n=1;$n<=5;$n++) {;;
echo "第".$n."注 ";;;
$string="";//初始化字符串;;
for ($i=1;$i<=7;$i++) {;;
mt_srand((double)microtime()*1000000);//加入时间的因素,以执行时的百万分之一秒当乱数种子;;
$random=mt_rand(1,30);//产生1-30间的随机数;;
if (eregi($random,$string)){//检查此数是否已经存在;;
$i--;;;
continue;//跳出循环,回到判断起始处。;;
};;
else{;;
$string=$string.",".$random;;;
echo $random," ";};;
};;
echo "<BR>";;;
};;
?>
标签: