php获取指定范围内最接近数的方法_php技巧

// 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 <mark>（本文来）源gaodaimacom搞#^代%!码&网(</mark><pre>搞gaodaima代码

: $f; }// Returns the next higher numberfunction NextHigherNumber($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 < $l; $pos++){ $n = $NumberRangeArray[$pos]; $abstand = ($n < $Number) ? $Number – $n : $n – $Number; if ($c == -1){ $c = $abstand; continue; } else if ($abstand 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)