I'm trying to install indefero on a CentOS 5.3 VMware 'box' and I ran into a problem. Quite early in the installation I get an error that I've been able to narrow down to this:
[root@code /var/www/html]# cat x.php
<?php
mb_internal_encoding("UTF-8");
?>
[root@code /var/www/html]# php x.php
PHP Fatal error: Call to undefined function mb_internal_encoding() in
/var/www/html/x.php on line 2
I get the same error when calling this script via http through Apache. Now according to the PHP manual the mb_internal_encoding function should be a builtin in PHP 5.
I have CentOS 5.3 i386 (Linux code 2.6.18-53.1.21.el5 #1 SMP Tue May 20 09:34:18 EDT 2008 i686 i686 i386 GNU/Linux) and I've installed PHP 5.2.9.
[root@code /var/www/html]# php -v
PHP 5.2.9 (cli) (built: Jul 8 2009 06:03:36)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies
I double checked: selinux has been disabled (for now).
How do i fix this?
For Debian/Ubuntu:
sudo apt-get install php7.0-mbstring
For OpenSUse (zypper package manager):
zypper install php5-mbstring
and:
zyper install php7-mbstring
In the other hand, you can search them through YaST Software manager.
Note that, you must restart apache http server:
systemctl restart apache2.service
apt-get install php7.3-mbstring solved the issue on ubuntu, php version is php-fpm 7.3
If you don't know how to enable php_mbstring extension in windows, open your php.ini and remove the semicolon before the extension:
change this
;extension=php_mbstring.dll
to this
extension=php_mbstring.dll
after modification, you need to reset your php server.
If someone is having trouble with installing php-mbstring package in ubuntu do following
sudo apt-get install libapache2-mod-php5
Source: Stackoverflow.com