Установка mbstring для php

How to install and enable mbstring in PHP

It is necessary to have PHP enabled with mbstring (multi-byte string) support to store and display multi-byte characters in the PHPKB software. ABCD requires that you have PHP enabled with mbstring support. If not enabled, see the tutorial below on how to enable mbstring on your server.

If this extension is missing, the system displays the error message:

Fatal error: Uncaught Error: Call to undefined function mb_detect_order()

Why mbstring is required?

When we manipulate (trim, split, splice, etc.) strings encoded in a multi-byte encoding, we need to use special functions since two or more consecutive bytes may represent a single character in such encoding schemes. Otherwise, if we apply a non-multibyte-aware string function to the string, it probably fails to detect the beginning or end of the multibyte character and ends up with a corrupted garbage string that most likely loses its original meaning.

So, mbstring provides multibyte-specific string functions that help us deal with multibyte encodings in PHP. In addition to that, mbstring handles character encoding conversion between the possible encoding pairs. mbstring is designed to handle Unicode-based encodings such as UTF-8 and UCS-2 and many single-byte encodings for convenience.

MBstring Installation

Debian (Ubuntu, LinuxMint…)

sudo apt-get update sudo apt-get install php-mbstring sudo service apache2 restart

Red-Hat (RHEL, Fedora, CentOS, Mandriva…)

php -m yum install php-mbstring service httpd restart

MS Windows

If you have access to the php.ini, just remove the semicolon character (;) in front of the line below.

extension = php_mbstring.dll

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How To Install php-mbstring on Ubuntu 20.04

In this tutorial we learn how to install php-mbstring on Ubuntu 20.04.

What is php-mbstring

This package provides a MBSTRING module for PHP.

PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.

This package is a dependency package, which depends on Debian’s default PHP version (currently 7.4).

There are three methods to install php-mbstring on Ubuntu 20.04. We can use apt-get , apt and aptitude . In the following sections we will describe each method. You can choose one of them.

Install php-mbstring Using apt-get

Update apt database with apt-get using the following command.

After updating apt database, We can install php-mbstring using apt-get by running the following command:

Install php-mbstring Using apt

Update apt database with apt using the following command.

After updating apt database, We can install php-mbstring using apt by running the following command:

Install php-mbstring Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

After updating apt database, We can install php-mbstring using aptitude by running the following command:

How To Uninstall php-mbstring on Ubuntu 20.04

To uninstall only the php-mbstring package we can use the following command:

Uninstall php-mbstring And Its Dependencies

To uninstall php-mbstring and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:

Remove php-mbstring Configurations and Data

To remove php-mbstring configuration and data from Ubuntu 20.04 we can use the following command:

Remove php-mbstring configuration, data, and all of its dependencies

We can use the following command to remove php-mbstring configurations, data and all of its dependencies, we can use the following command:

References

Summary

In this tutorial we learn how to install php-mbstring package on Ubuntu 20.04 using different package management tools: apt , apt-get and aptitude .

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How to install PHP `mbstring` extension in Ubuntu?

EDIT: Dylan Pierce has confirmed that you can already install some PHP 7.2 extensions in the same way you would for PHP 5. For mbstring in particular, you can execute:

sudo apt-get install php7.2-mbstring 

To complement sparkmood’s answer, this now works for PHP 7.2 if you already imported ondrej’s PPA for it.

sudo apt-get install libapache2-mod-php7.2 

Don’t forget, either PHP 7 is available through ubuntu’s official repositories or you will need an external PPA.

I’ve figured it out: sudo apt-get install php7.0-mbstring Also works for other php extensions you might need like: sudo apt-get install php7.0-zip sudo apt-get install php7.0-dom I really like how brainless it is to install/activate these modules. I just wish I didn’t have to go on an internet wide goose chase for them.

I believe that as soon as version 7 covers all of the old 5 libraries, you won’t have to write 7 to get the latest and greatest. Not doing so would probably break build scripts or cause unexpected behavior.

After installed in Ubuntu 16.04 with LAMP is needed to restart Apache2 service sudo service apache2 restart

sudo apt-get install php-mbstring 

I have installed mbstring in php7.0-fpm (7.0.15-0ubuntu0.16.04.4)

This is correct for Debian Stretch. No need to add the version number. Internally a sub-package with version number is loaded.

This is vastly superior to specifying the version on the cli as it seems to adapt to the installed version.

My experience using the sury package repo on debian 9 (stretch), I had to specify the 7.2 version, because php-mbstring is only supported until php 7.2. By not using the php prefix version, it kept saying it doesn’t exist since by php7.4 (the latest release of php as of today). Make sure to install only php7.2 and not above or it might not work as expected.

mbstring is built in libapache2-mod-php5 package, so you can use this command for installing :

sudo apt-get install libapache2-mod-php5 

 dba dom ereg exif fileinfo filter ftp gettext hash iconv json libxml mbstring mhash openssl pcre Phar posix Reflection session shmop SimpleXML soap sockets SPL standard sysvmsg sysvsem sysvshm tokenizer wddx xml xmlreader xmlwriter zip zlib. 

I have already installed apache2 on my server now if I install «libapache2-mod-php5» on my server will it any problem.

This is poor advice. While some systems have Apache2 installed, many others may not. Executing this command risks breaking otherwise working systems. (Yes, I know I’m years late, but maybe it’ll help someone not try this fix.)

If you’re using php 5.6

Install php 5.6 mbstring package:

sudo apt-get install php5.6-mbstring 

Then add the following line to the bottom of your php.ini file:

sudo service apache2 restart 

To find your php.ini file, create a file and insert the following line:

Then open with a browser to see where your php.ini file is located.

In my case it was already installed, but I just needed to do phpenmod mbstring , followed by apachectl graceful .

For Ubuntu 14.04 extension mbstring should be built in.

sudo apt-get install php7.0-mbstring 

It requires adding another source for apt for install in 18.04..

Download Page for php7.2-mbstring_7.2.7-0ubuntu0.18.04.2_amd64.deb on AMD64 machines

If you are running Ubuntu, it is strongly suggested to use a package manager like aptitude or synaptic to download and install packages, instead of doing so manually via this website.

You should be able to use any of the listed mirrors by adding a line to your /etc/apt/sources.list like this:

+1 I had to use this solution as well for my Google Cloud Ubuntu 18.04 LTS install before I could use apt-get for the 7.2 mbstring extension, then I was able to use the accepted answer.

Since the mcrypt itself (the package that php-mcrypt uses to do its crypt stuff) is no longer supported after PHP7.2, As of today, to install it specifically for php7.2, you’ll need to make sure when installing to prefix all php7.2 extensions with php7.2- .

While initially the commands suggested by others to just install it work, when using it with an framework version that requires mcrypt (such as Laravel4.2), it will require you to install mcrypt using pecl. Follow the fix here

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