[英]Round to 5 and 9 php
我正在尋找一個公式來將值四舍五入到最接近的5或9,如果val小於5則使5大於5時使9。
例:
$RoundToFive = ceil('232' / 5) * 5;
echo floor($RoundToFive * 2 ) / 2; //Result is 235 Is good
$RoundToNine = ceil('236' / 5) * 5;
echo floor($RoundToNine * 2 ) / 2; //Result is 240 but i need 239
有沒有辦法總是提取最后兩位數字並將其轉換為5或9?
任何幫助表示贊賞!
怎么樣:
function funnyRound($number){
$rounded = ceil($number / 5) * 5;
return $rounded%10?$rounded:$rounded-1;
}
這工作
<?php
function roundToDigits($num, $suffix, $type = 'floor') {
$pow = pow(10, floor(log($suffix, 10) + 1));
return $type(($num - $suffix) / $pow) * $pow + $suffix;
};
$RoundToNine = ceil('236' / 5) * 5;
echo roundToDigits($RoundToNine,5);
echo roundToDigits($RoundToNine,9);
您可以使用任何數字作為$后綴來四舍五入。
其他方式,使用字符串...:
<?php
function round59($NUMB){
//cast the value to be Int
$NUMB = intval($NUMB);
//Get last number
$last_number = intval(substr($NUMB, -1));
$ROUND_NUMBER = 5;
if($last_number<=5)
$ROUND_NUMBER = 5;
else
$ROUND_NUMBER = 9;
//Remove Last Character
$NUMB = substr($NUMB, 0, -1);
// now concat the results
return intval($NUMB."".$ROUND_NUMBER) ;
}
echo round59(232);
echo round59(236);
?>
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