PHP Simple Shuffle Algorithm _php tutorial

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View Source Print? 01 02/**03 * @author phpman.cn04 * @date 2012/12/0405 * @todo 简单洗牌算法06 */07 08$card_num=54; //牌数09print_r(wash_card($card_num));10 11function wash_card($card_num)12{13 $cards=$tmp=array();14 for($i=0;$i<$card_num;$i++){15 $tmp[$i]=$i;16 }17 18 for($i=0;$i<$card_num;$i++){19 $index=rand(0,$card_num-$i-1);20 $cards[$i]=$tmp[$index];21 unset($tmp[$index]);22 $tmp=array_values($tmp);23 }24 return $cards;25}26?>

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