[英]number_format() php remove trailing zeros
Is there a way with number_format()
to leave out decimal places if the number is not a float/decimal?如果数字不是浮点数/小数,有没有办法用
number_format()
小数位?
For example, I would like the following input/output combos:例如,我想要以下输入/输出组合:
50.8 => 50.8
50.23 => 50.23
50.0 => 50
50.00 => 50
50 => 50
Is there a way to do this with just a standard number_format()
?有没有办法只用一个标准的
number_format()
来做到这一点?
You can add 0
to the formatted string.您可以将
0
添加到格式化字符串中。 It will remove trailing zeros.它将删除尾随零。
echo number_format(3.0, 1, ".", "") + 0; // 3
A Better Solution: The above solution fails to work for specific locales.更好的解决方案:上述解决方案不适用于特定的语言环境。 So in that case, you can just type cast the number to
float
data type.因此,在这种情况下,您只需将数字类型转换为
float
数据类型即可。 Note: You might loose precision after type casting to float
, bigger the number, more the chances of truncating the number.注意:将类型转换为
float
后可能会降低精度,数字越大,截断数字的机会越大。
echo (float) 3.0; // 3
Ultimate Solution: The only safe way is to use regex:终极解决方案:唯一安全的方法是使用正则表达式:
echo preg_replace("/\.?0+$/", "", 3.0); // 3
echo preg_replace("/\d+\.?\d*(\.?0+)/", "", 3.0); // 3
If you want to use whitespace here is better solution如果你想在这里使用空格是更好的解决方案
function real_num ($num, $float)
{
if (!is_numeric($num) OR is_nan($num) ) return 0;
$r = number_format($num, $float, '.', ' ');
if (false !== strpos($r, '.'))
$r = rtrim(rtrim($r, '0'), '.');
return $r;
}
Use:用:
$a = 50.00; $a = 50.00;
$a = round($a, 2); $a = round($a, 2);
Even though the number has 2 zeros trailing it, if you round it, it won't show the decimal places, unless they have some kind of value.即使该数字后面有 2 个零,如果您对它进行四舍五入,它也不会显示小数位,除非它们具有某种值。
so 50.00 rounded using 2 places will be 50, BUT 50.23 it will be 50.23所以使用 2 个位置四舍五入的 50.00 将是 50,但 50.23 将是 50.23
Thank you, yes thank you.谢谢,是的,谢谢。 So EASYYYY.
所以很容易。
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