Php四舍五入小数

代码示例

php四舍五入小数

$value = 1.23456789;
$rounded_value = round($value, 2); 
// 2 is the precision here we will get 1.23

php小数点后2位不四舍五入

<?php 
function cutAfterDot($number, $afterDot = 2){
$a = $number * pow(10, $afterDot);
$b = floor($a);
$c = pow(10, $afterDot);
echo "a $a, b $b, c $c<br/>";
return $b/$c ;
}
echo cutAfterDot(2.05,2);

/*
output =   a 205, b 204, c 100 
2.04
*/

?>

2使用php的十进制圆

// using round() function we can roundoff float values in php
$value = 58.24365;
round($value, 2);
//result 58.24

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php round float to int up

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