php获取指定范围内最接近数的方法

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 number function NextRelatedNumber($number, $range){ $r = $number % $range; $f = $number - $r; $b = round($r / $range, 0); return ($b == 1) ? $f + $range : $f; } // Returns the next higher number function NextHigherNumber($number, $range){ $r = $number % $range; $f = $number - $r; $b = ceil($r / $range); return ($b == 1) ? $f + $range : $f; } // Returns the next lower number function NextLowerNumber($number, $range){ $r = $number % $range; $f = $number - $r; $b = floor($r / $range); return ($b == 1) ? $f + $range : $f; } // Returns the next related number from an array function NextNumberArray($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 Array print '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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