PHP计数，每2个字符添加冒号 [英] PHP count, add colons every 2 characters

问题描述

我有这个字符串

  1010081-COP-8-27-20110616214459 
  

我需要计算从这个字符串结尾开始的最后6个字符（因为从开始处开始可能很长）

然后我需要在每两个字符后添加冒号。

所以在从最后计数6个字符后， p>

  214459 
  

添加冒号后，它将如下所示：

  21:44:59 
  
 
 
我真的不知道从哪里开始！
 
 
 
谢谢
解决方案
 href =http://us2.php.net/manual/en/function.substr.php =nofollow>  substr  ，  str_split  和  implode   
 
 
 
为了清楚起见，代码在多行上完成，但可以很容易在一行的链中完成：
  $ str ='1010081-COP-8-27-20110616214459'; 
 //获取最后6个字符
 $ end = substr（$ str，-6）; 
 //将字符串拆分成数组。每个元素是2个字符
 $ chunks = str_split（$ end，2）; 
 //将数组转换为字符串。每个元素由给定的分隔符分隔。 
 $ result = implode（'：'，$ chunks）; 
  
 
I have this string
1010081-COP-8-27-20110616214459
I need to count the last 6 characters starting from the end of this string (because it could may be long starting from the begin)

Then I need to add colons after every 2 characters.

So after counting 6 characters from the end it will be 
214459
After having added the colons it will look like:
21:44:59
Can you help me achieving it?

I do not really know where to start!

Thank you
解决方案
You can do this with substr, str_split and implode

The code is done on multiple lines for clarity, but can easily be done in a chain on one line:
$str = '1010081-COP-8-27-20110616214459';
//Get last 6 chars
$end = substr($str, -6);
//Split string into an array.  Each element is 2 chars
$chunks = str_split($end, 2);
//Convert array to string.  Each element separated by the given separator.
$result = implode(':', $chunks);


                        
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