这篇文章主要介绍了php获取指定范围内最接近数的方法,可实现根据给定区间长度划分各个区间,并在其中寻找与给定数最接近的数,需要的朋友可以参考下
本文实例讲述了php获取指定范围内最接近数的方法。分享给大家供大家参考。具体实现方法如下：
// returns the next higher or lower numberfunction nextrelatednumber($number, $range){$r = $number % $range; $f = $number - $r; $b = round($r / $range, 0); return ($b == 1) ? $f + $range : $f; }// returns the next higher numberfunction nexthighernumber($number, $range){$r = $number % $range; $f = $number - $r; $b = ceil($r / $range); return ($b == 1) ? $f + $range : $f; }// returns the next lower numberfunction nextlowernumber($number, $range){$r = $number % $range; $f = $number - $r; $b = floor($r / $range); return ($b == 1) ? $f + $range : $f; }// returns the next related number from an arrayfunction nextnumberarray($number, $numberrangearray){ $w = 0; $c = -1; $abstand = 0; $l = count($numberrangearray);for($pos=0; $pos 40// 0 20 40 60 80 100 ...print 'nexthighernumber: ';print nexthighernumber(41, 20) . \n;// returns --> 60// 0 5 10 15 20 25 30 35 ...print 'nextlowernumber: ';print nextlowernumber(57, 5) . \n;// returns --> 55// example with arrayprint 'nextnumberarray: ';print nextnumberarray(45, array(3, 8, 19, 34, 56, 89)) . \n;// returns --> 34// (45 is between 34 and 56 but 34 is the next)
希望本文所述对大家的php程序设计有所帮助。
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