getting error while updating Composer

Question

I have a project in Laravel-5.1 and I have changed my platform from win10 to Ubuntu.

Showing error:

Loading composer repositories with package information

Updating dependencies (including require-dev)

Your requirements could not be resolved to an installable set of packages.

  Problem 1
- laravel/framework v5.2.9 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.8 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.7 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.6 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.5 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.4 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.31 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.30 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.3 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.29 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.28 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.27 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.26 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.25 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.24 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.23 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.22 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.21 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.20 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.2 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.19 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.18 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.17 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.16 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.15 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.14 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.13 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.12 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.11 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.10 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.1 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.0 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework v5.2.30 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- Installation request for laravel/framework 5.2.* -> satisfiable by laravel/framework[v5.2.0, v5.2.1, v5.2.10, v5.2.11, v5.2.12, v5.2.13, v5.2.14, v5.2.15, v5.2.16, v5.2.17, v5.2.18, v5.2.19, v5.2.2, v5.2.20, v5.2.21, v5.2.22, v5.2.23, v5.2.24, v5.2.25, v5.2.26, v5.2.27, v5.2.28, v5.2.29, v5.2.3, v5.2.30, v5.2.31, v5.2.4, v5.2.5, v5.2.6, v5.2.7, v5.2.8, v5.2.9].

To enable extensions, verify that they are enabled in those .ini files:
- /etc/php/7.0/cli/php.ini
- /etc/php/7.0/cli/conf.d/10-mysqlnd.ini
- /etc/php/7.0/cli/conf.d/10-opcache.ini
- /etc/php/7.0/cli/conf.d/10-pdo.ini
- /etc/php/7.0/cli/conf.d/20-calendar.ini
- /etc/php/7.0/cli/conf.d/20-ctype.ini
- /etc/php/7.0/cli/conf.d/20-exif.ini
- /etc/php/7.0/cli/conf.d/20-fileinfo.ini
- /etc/php/7.0/cli/conf.d/20-ftp.ini
- /etc/php/7.0/cli/conf.d/20-gettext.ini
- /etc/php/7.0/cli/conf.d/20-iconv.ini
- /etc/php/7.0/cli/conf.d/20-json.ini
- /etc/php/7.0/cli/conf.d/20-mysqli.ini
- /etc/php/7.0/cli/conf.d/20-pdo_mysql.ini
- /etc/php/7.0/cli/conf.d/20-phar.ini
- /etc/php/7.0/cli/conf.d/20-posix.ini
- /etc/php/7.0/cli/conf.d/20-readline.ini
- /etc/php/7.0/cli/conf.d/20-shmop.ini
- /etc/php/7.0/cli/conf.d/20-sockets.ini
- /etc/php/7.0/cli/conf.d/20-sysvmsg.ini
- /etc/php/7.0/cli/conf.d/20-sysvsem.ini
- /etc/php/7.0/cli/conf.d/20-sysvshm.ini
- /etc/php/7.0/cli/conf.d/20-tokenizer.ini
You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

Composer/json.

{
"name": "laravel/laravel",
"description": "The Laravel Framework.",
"keywords": ["framework", "laravel"],
"license": "MIT",
"type": "project",
"require": {
  "php": ">=5.5.9",
  "laravel/framework": "5.2.*",
  "infyomlabs/laravel-generator": "dev-master",
  "laravelcollective/html": "5.2.*",
  "infyomlabs/core-templates": "dev-master",
  "infyomlabs/swagger-generator": "dev-master",
  "jlapp/swaggervel": "dev-master",
  "doctrine/dbal": "~2.3",
  "infyomlabs/generator-builder": "dev-master",
  "yajra/laravel-datatables-oracle": "~6.0",
  "barryvdh/laravel-ide-helper": "^2.1",
  "infyomlabs/adminlte-templates": "dev-master"
},
"require-dev": {
    "fzaninotto/faker": "~1.4",
    "mockery/mockery": "0.9.*",
    "phpunit/phpunit": "~4.0",
    "symfony/css-selector": "2.8.*|3.0.*",
    "symfony/dom-crawler": "2.8.*|3.0.*"
},
"autoload": {
    "classmap": [
        "database"
    ],
    "psr-4": {
        "App\\": "app/"
    }
},
"autoload-dev": {
    "classmap": [
        "tests/TestCase.php"
    ]
},
"scripts": {
    "post-root-package-install": [
        "php -r \"copy('.env.example', '.env');\""
    ],
    "post-create-project-cmd": [
        "php artisan key:generate"
    ],
    "post-install-cmd": [
        "Illuminate\\Foundation\\ComposerScripts::postInstall",
        "php artisan optimize"
    ],
    "post-update-cmd": [
        "Illuminate\\Foundation\\ComposerScripts::postUpdate",
        "php artisan optimize"
    ]
},
"config": {
    "preferred-install": "dist"
}

}

Hi @kkpatel, please put a minimal working example, what you have done to fix your issue. — Andy K, May 02 '16 at 10:45
@Andy K need to install mbstring , yum and xml for php7.0 and beet change in php.ini file. — Ketan Akbari, May 02 '16 at 12:07
that's James giving you the answer. Not what you have done to find the issue — Andy K, May 02 '16 at 12:28

score 118 · Accepted Answer · edited May 18 '16 at 12:30

118

Your error message is pretty explicit about what is going wrong:

laravel/framework v5.2.9 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.

Do you have mbstring installed on your server and is it enabled?

You can install mbstring as part of the libapache2-mod-php5 package:

sudo apt-get install libapache2-mod-php5

Or standalone with:

sudo apt-get install php-mbstring

Installing it will also enable it, however you can also enable it by editing your php.ini file and remove the ; that is commenting it out if it is already installed.

If this is on your local machine, then follow the appropriate steps to install this on your environment.

edited May 18 '16 at 12:30

Hampus Fristedt

37
6

answered May 02 '16 at 09:27

James

13,679
11
58
81

Correct me if I am wrong: *and remove the `;` commenting it out* you meant *uncommenting it out*, as the semi colon represents the comment, right ? – Saiyan Prince May 06 '16 at 10:11
@SaiyanPrince i have edited my answer - but I meant to say that having the semi colon there was currently commenting it out – James May 06 '16 at 10:12
@James Thank you for providing the clarification but your edit has not made any change. I still find it unclear from my side.. It should be uncommenting and not commenting.. – Saiyan Prince May 06 '16 at 10:14
1

@SaiyanPrince "the `;` that is commenting it out" is the correct English in this case. – Chris Dec 18 '16 at 07:08
why does composer not downoald the libary ext-mbstring automatically? I thought its a package manager? – Adam Apr 21 '17 at 09:33
@Adam Composer is a *package* manager and not a *module* manager. Ext-mbstring is a php module that you need to install and enable on your server, as opposed to a php package which is installed in your project. – James Apr 21 '17 at 09:46

score 45 · Answer 2 · answered Sep 29 '17 at 18:12

45

for php7 you can do that:

sudo apt-get install php-gd php-xml php7.0-mbstring

answered Sep 29 '17 at 18:12

Ibrahima Timera

549
4
6

8

for php 7.2 I used sudo apt-get install php-gd php-xml php7.2-mbstring – Dariux Jan 08 '18 at 20:55
2

Finally! Thank you very much, kind sir. – Zariweya Jan 25 '18 at 16:33

score 14 · Answer 3 · edited Apr 17 '20 at 09:23

14

In php7.2 Ubuntu 18.04 LTS and ubuntu 19.04

sudo apt-get install php-gd php-xml php7.2-mbstring

Works like a Charm

edited Apr 17 '20 at 09:23

sawe onwong'a peter

3
4

answered Nov 25 '18 at 12:46

Ian Samz

1,001
11
16

score 7 · Answer 4 · answered Dec 14 '18 at 18:20

7

If you're using php 7.3 for laravel 5.7. this work for me

sudo apt-get install php-gd php-xml php7.3-mbstring

answered Dec 14 '18 at 18:20

Fil

5,450
10
43
67

It was only way that it works for me, i am using: PHP Version 7.2.24-1 + ubuntu16.04.1 + deb.sury.org + Laravel 5.8.35 – LuizEduardoMPF Nov 06 '19 at 10:14

KATHEESKUMAR · Answer 5 · 2021-04-22T04:50:54.930

5

The quick solution for this error

run this command

composer install --ignore-platform-reqs

This command not consider operating system or platform

edited Apr 22 '21 at 04:50

answered Feb 21 '20 at 15:05

KATHEESKUMAR

55
1
7

It worked for me. Composer was checking platform requirements but actually the reqs are already satisfied. After running this command, everything worked as expected – Buraco Mar 24 '21 at 13:45

score 3 · Answer 6 · answered Feb 15 '18 at 08:44

3

After installing packages from given answers, i still get some errors then i install following package and it works fine:

php-xml

for specific version:

php7.0-xml

command for php 7.0

sudo apt-get install php7.0-xml

in some cases you also needs a package php7.0-common . install it same as above command.

answered Feb 15 '18 at 08:44

J4GD33P 51NGH

513
6
15

it seems php version is important here... I tried couple of time with php-xml instead of php7.*-xml. – Md. Mohaiminul Hasan Jul 23 '20 at 06:10

score 1 · Answer 7 · answered Dec 13 '17 at 19:49

1

A lot of good answers already for Ubuntu. I'm on Linux and had the same problem but none of the commands above worked for me.

With Linux and php70 I used the following command which worked great:

sudo yum install php70-mbstring -y

answered Dec 13 '17 at 19:49

suntzu

228
2
9

score 1 · Answer 8 · answered Jun 16 '19 at 22:43

1

This works for me with php 7.2

sudo apt-get install php7.2-xml

answered Jun 16 '19 at 22:43

nanichang

36
2
4

Harikrushna Patel · Answer 9 · 2020-07-08T05:52:46.560

Problem :

Problem 1
    - laravel/framework v5.8.38 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
    - laravel/framework v5.8.38 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
    - laravel/framework v5.8.38 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
    - Installation request for laravel/framework (locked at v5.8.38, required as 5.8.*) -> satisfiable by laravel/framework[v5.8.38].

  To enable extensions, verify that they are enabled in your .ini files:
    - C:\xampp\php\php.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

Solution :

if you using xampp just remove ' ; ' from

;extension=mbstring

in php.ini , save it, done!

getting error while updating Composer

9 Answers9

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