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概率计算 PHP幸运星

Jun 13, 2016 am 10:33 AM
phpeventoccurCanyesProbabilityuserSuregivencalculate

给定一个概率(这里是点数),确定某次事件是否发生.
可以用在根据用户获得的点数,随机产生网站幸运星等方面(注意:这里有个等字).
/**
@title:PHP幸运星(lucker)
@version:1.00
@license:BSD
@author:axgle
*/

$bl = lucker(50);//50%的可能性
var_dump($bl);

function lucker($dot) {
        $dot = intval($dot);
        $dot = max($dot,0);//min dot = 0
        $dot = min($dot,100);//max dot = 100

        $one = rand(1,100);
        $total = range(1,100);
        shuffle($total);

        $range = array();
        for($i=0; $i                 $range[] = $total[$i];
        }
        return in_array($one,$range);
}
?>

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