Question

php取整怎么以5为界

大神，再次向您请教，像这种取整怎么能以5为界呢？ 比如261529取整为300000，而221529取整为250000

若以下回答无法解决问题，邀请你更新回答

Answer 1

/**

+-------------------------------------------------

* @param int $amount 目标数字

+-------------------------------------------------

* @param int $num 向上取整的位数

+-------------------------------------------------

* @param int $scope 界数,1-10的数字

+-------------------------------------------------

* @return int

+-------------------------------------------------

*/

function rounding($amount,$num,$scope)

{

$change = 1;

for($i = 1;$i < $num;$i++){

$change = $change * 10;

}

$temp = floor($amount/$change);

if($temp%10 < $scope){

$return = floor($temp/10)*10 + $scope;

}else{

$return = (floor($temp/10)+1)*10;

}

return $return * $change;

}

echo rounding(221529,5,5);

追问

大神，不知您是否有空回复一下，以5为界向上取整怎么解决，谢谢大神