laravel 调用未定义的函数 mb_strimwidth
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call to undefined function mb_strimwidth
提问by Yuri
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:
几个月前，我编写了一个短代码，用于mb_strimwidth()将一些文本精确地放入表格单元格中，在截断字符串的末尾放置点。现在，一段时间后，我尝试执行相同的代码，结果出现以下错误：
Fatal error: Call to undefined function mb_strimwidth() in ...
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.
我试图找到mbstring.php文件，当我找到该mb_strimwidth()函数时，我发现它不再实现了。这怎么可能？但我的主要问题是：我怎样才能得到与mb_strimwidth()? 我想使用循环和重写函数mb_strwidth()，但该 mbstring.php 文件中的所有函数都是空的。
回答by Michel Feldheim
All mb_*functions are provided by a PHP extension called Multibyte String, internal name mbstring
所有mb_*函数均由名为 Multibyte String 的 PHP 扩展提供，内部名称为mbstring
You probably don't have the extension active or installed. On most Linux distros you can install the package php-mbstringto install and activate this extension.
您可能没有激活或安装扩展。在大多数 Linux 发行版上，您可以安装该软件包php-mbstring来安装和激活此扩展。
Apache needs to be restarted afterwards if you are using mod_php
如果您使用的是 mod_php，则需要在之后重新启动 Apache
回答by Hyder B.
Just got this issue, if you are using linux just install the package php-mbstringand restart Apache.
刚刚遇到这个问题，如果您使用的是 linux，只需安装软件包php-mbstring并重新启动 Apache。
sudo apt-get install php-mbstring
sudo service apache2 restart
If you are using specific PHP version, you may need to run the following:
如果您使用特定的 PHP 版本，则可能需要运行以下命令：
sudo apt-get install php7.x-mbstring
sudo service apache2 restart
Replace 7.xby the exact PHP version.
替换7.x为确切的 PHP 版本。
回答by Jignesh Joisar
u need to install php-mbstringpackage try.
你需要安装php-mbstring包试试。
check php version
检查 php 版本
php -v
then check mbstring already install and enable
然后检查 mbstring 已经安装并启用
php -i | grep mbstring
if not installed run this command
如果未安装，请运行此命令
sudo apt-get install php-mbstring
if you are php other versionexample : 7.1, 7.2, 7.0based on run command like this :
如果您是php 其他版本示例：7.1、7.2、7.0基于这样的运行命令：
sudo apt-get install php7.1-mbstring
if you are using nginx server for run laravel .. then check nginx configration file which version u have loaded in conf file..
如果您使用 nginx 服务器运行 laravel .. 然后检查 nginx 配置文件您在 conf 文件中加载了哪个版本..
go to cd /etc/nginx/sites-availableand open your configuration file..
if you are loading php7.2 version in nginx conf file..
去cd /etc/nginx/sites-available打开你的配置文件..如果你在nginx conf文件中加载php7.2版本..
fastcgi_pass unix:/var/run/php/php7.1-fpm.sock;
fastcgi_pass unix:/var/run/php/php7.1-fpm.sock;
then u need to install 7.2mbstring package..
然后你需要安装7.2mbstring 包..
sudo apt-get install php7.2-mbstring
and restartapache2 server
并重新启动apache2 服务器
sudo service apache2 restart
回答by Turan Zamanl?
if you already installed mbstring then you have to call this extension on php.ini file.
如果你已经安装了 mbstring 那么你必须在 php.ini 文件上调用这个扩展。
First, detect where is your php-fpm.ini file or php.ini.
首先，检测您的 php-fpm.ini 文件或 php.ini 在哪里。
run command
运行命令
php -i | grep php.ini
it returns you path of php.ini file.
它返回 php.ini 文件的路径。
for example
例如
/etc/php.ini
then open file with VIM or another editor
然后用 VIM 或其他编辑器打开文件
vim /etc/php.ini
and then add mbstring extension to php.ini file
然后将 mbstring 扩展名添加到 php.ini 文件
extension=mbstring.so;
finally, restart php-fpm
最后，重启 php-fpm
systemctl restart php-fpm
