PHP舍入数字 [英] PHP Rounding Numbers

问题描述

我似乎无法弄清楚如何始终使用PHP进行取整. ceil()是显而易见的选择，但我需要与round()提供的第二个参数"precision"相同的功能.这是一个示例:

I cannot seem to figure out how to always round up in PHP. ceil() would be the obvious choice but I need the same functionality that round() provides with its second parameter "precision". Here is an example:

// Desired result: 6250
echo round(6244.64, -2); // returns 6200
echo round(6244.64, -1); // returns 6240
echo ceil(6244.64) // returns 6245

我需要数字始终四舍五入，以便我可以根据图表的参数计算相等的除数.

I need the number to always round up so that I can calculate an equal divisor based on parameters for a chart.

推荐答案

来自对 http://php.net/manual/zh/function.ceil.php :

Quick and dirty `ceil` type function with precision capability.

function ceiling($value, $precision = 0) {
    return ceil($value * pow(10, $precision)) / pow(10, $precision);
}

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