浮点数格式 [英] Floating point number format

问题描述

我想在PHP中使用 number_format 函数。例如：

  $ number = 234.51; 
 echo number_format（$ number，2）; 
  

这适用于浮点数，但我想用它来表示不同的数字。如果一个数字是十进制数，并且没有任何浮点数，则显示如下：145.00。我怎样才能解决这个问题？我的意思是我想显示所需的浮点数，而不是更多。

解决方案

我想我不能得到我想要从number_format，所以我做到了这一点，它工作正常：

pre $公共函数floatNumber $
{
$ number_array = explode（'。'，$ number）;
$ left = $ number_array [0];
$ right = $ number_array [1];
return number_format（$ number，strlen（$ right））;
}

thanx all for your replies。

I want to use number_format function in PHP. For example:

$number = 234.51;
echo number_format($number,2);

This works for float numbers but I want to use it for different numbers. If a number is decimal and doesn't have any floating points, it shows like : 145.00 . How can I fix this? I mean I want to show as many floating points as needed, not more.

解决方案

I think I can't get what I want from number_format so I did this and it works fine :

 public function floatNumber($number)
 {
      $number_array = explode('.', $number);
      $left = $number_array[0];
      $right = $number_array[1];
      return number_format($number, strlen($right));
 }

thanx all for your replies.

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