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   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 8 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 7 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 6 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 5 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 4 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 31 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 30 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 3 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 29 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 28 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 27 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 26 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 25 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 24 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 23 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 22 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 21 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 20 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 2 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 19 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 18 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 17 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 16 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 15 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 14 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 13 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 12 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 11 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 10 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 1 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 0 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - laravel framework v5 2 30 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system  - Installation request for laravel framework 5 2   - gt  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     quot name quot    quot laravel laravel quot    quot description quot    quot The Laravel Framework  quot    quot keywords quot     quot framework quot    quot laravel quot     quot license quot    quot MIT quot    quot type quot    quot project quot    quot require quot        quot php quot    quot  gt  5 5 9 quot      quot laravel framework quot    quot 5 2   quot      quot infyomlabs laravel-generator quot    quot dev-master quot      quot laravelcollective html quot    quot 5 2   quot      quot infyomlabs core-templates quot    quot dev-master quot      quot infyomlabs swagger-generator quot    quot dev-master quot      quot jlapp swaggervel quot    quot dev-master quot      quot doctrine dbal quot    quot  2 3 quot      quot infyomlabs generator-builder quot    quot dev-master quot      quot yajra laravel-datatables-oracle quot    quot  6 0 quot      quot barryvdh laravel-ide-helper quot    quot  2 1 quot      quot infyomlabs adminlte-templates quot    quot dev-master quot      quot require-dev quot          quot fzaninotto faker quot    quot  1 4 quot        quot mockery mockery quot    quot 0 9   quot        quot phpunit phpunit quot    quot  4 0 quot        quot symfony css-selector quot    quot 2 8   3 0   quot        quot symfony dom-crawler quot    quot 2 8   3 0   quot      quot autoload quot          quot classmap quot              quot database quot              quot psr-4 quot              quot App   quot    quot app  quot            quot autoload-dev quot          quot classmap quot              quot tests TestCase php quot            quot scripts quot          quot post-root-package-install quot              quot php -r   quot copy   env example     env     quot  quot              quot post-create-project-cmd quot              quot php artisan key generate quot              quot post-install-cmd quot              quot Illuminate  Foundation  ComposerScripts  postInstall quot            quot php artisan optimize quot              quot post-update-cmd quot              quot Illuminate  Foundation  ComposerScripts  postUpdate quot            quot php artisan optimize quot            quot config quot          quot preferred-install quot    quot dist quot

User · Answer

Problem   Problem 1     - laravel framework v5 8 38 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system      - laravel framework v5 8 38 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system      - laravel framework v5 8 38 requires ext-mbstring   - gt  the requested PHP extension mbstring is missing from your system      - Installation request for laravel framework  locked at v5 8 38  required as 5 8    - gt  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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

The good solution for this error please run this command  composer install --ignore-platform-reqs

User · Answer

for php7 you can do that   sudo apt-get install php-gd php-xml php7 0-mbstring

User · Answer

This works for me with php 7 2   sudo apt-get install php7 2-xml

User · Answer

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

User · Answer

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

[laravel] getting error while updating Composer

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