问题描述
几个月前，我编写了一个简短的代码，该代码使用mb_strimwidth()来将某些文本恰好适合表格单元格，将点放在截断字符串的末尾.现在，一段时间后，我尝试执行相同的代码，但此错误消失了:
Months ago I made a short code that uses mb_strimwidth() to exactly fit some text into a table cell, putting dots at the end of a truncated string.Now, after some times, I tried to execute that same code and it went out with this error:
Fatal error: Call to undefined function mb_strimwidth() in ...
我试图找到mbstring.php文件，当我找到mb_strimwidth()函数时，我发现它不再实现了.那怎么可能?但是我的主要问题是:如何获得与mb_strimwidth()相同的结果?我以为可以使用循环和mb_strwidth()重写该函数，但是该mbstring.php文件中的所有函数都是空的.
I tried to find the mbstring.php file, and when I found the mb_strimwidth() function, I discovered that it is not implemented anymore. How is that possible?But my main question is: how can I get the same result as mb_strimwidth()?I thought to rewrite the function using a loop and mb_strwidth(), but ALL the functions in that mbstring.php file are empty.
推荐答案
所有mb_*函数均由名为Multibyte String的PHP扩展提供，内部扩展名为 mbstring
All mb_* functions are provided by a PHP extension called Multibyte String, internal name mbstring
您可能没有激活或未安装扩展.在大多数Linux发行版中，您可以安装软件包php-mbstring来安装和激活此扩展.
You probably don't have the extension active or installed. On most Linux distros you can install the package php-mbstring to install and activate this extension.
如果您使用的是mod_php，则之后需要重新启动Apache
Apache needs to be restarted afterwards if you are using mod_php
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