I have a server (Ubuntu 11.10 x64) running PHP 5.3.8 with Apache2 / MySQL. I'm currently working on a project where I'm required to do some specific character encoding, but I found out that none of the multibyte (mb_* functions) are working.
However, when I look in phpinfo(), I see that multibyte support is enabled.
I've tried things like apt-get install php5-mbstring, php-mbstring, php-multibyte, etc. etc. but none seem to work.
Can anyone point me in the right direction for this? Thanks in advance!
./configure --enable-mbstring
The weird this is, phpinfo() already showed that it was enabled. I don't know why it didn't work before :/
A lot of newer Linux servers do not have PHP Multibyte modules installed by default. A simple solution is often to install php-mbstring.
On Red Hat flavors (CentOS, Fedora, etc.) you can use yum install php-mbstring.
Make sure you restart your Apache server afterwards. Use service httpd restart on RH flavors.
In the case of your installation is php5.6 is similar to solution of neilsimp1:
Running sudo apt-get install php7.0-mbstring
and then sudo service php7.0-fpm
restart did the trick for me.
sudo apt-get install php5.6-mbstring
and then restart apache service
sudo service apache2 restart.
Sometimes people receiving this kind of error : Fatal error: Call to undefined function mb_convert_encoding() in /public_html/this/this.php at line 188. Normally this kind of errors comes in PHP Sites and PHP framework aswell.
It looks like PHP mbstring not installed on your server.
Solution :
In my case I have just uncomment ;extension=php_mbstring.dll in php.ini file and issue has been resolved.
Don't forget to restart apache server after uncomment ;extension=php_mbstring.dll
Code taken from this blog: http://chandreshrana.blogspot.in/2016/01/call-to-undefined-function.html
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