更新Composer时出现错误

Question

更新Composer时出现错误

53

我在 Laravel-5.1 中有一个项目，我将我的平台从 Windows 10 更改为 Ubuntu。

显示错误：

正在加载包含软件包信息的 Composer 存储库

正在更新依赖项（包括 require-dev）

无法解析您的要求以安装一组可安装的软件包。

  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"
}

- Ketan Akbari

嗨@kkpatel，请提供一个最小的工作示例，展示你为解决问题所做的工作。 - Andy K

@Andy K 需要为php7.0安装mbstring、yum和xml，并在php.ini文件中进行更改。 - Ketan Akbari

那是詹姆斯给你答案，而不是你为了找到问题所做的事情。 - Andy K

10个回答

45

对于PHP7，您可以这样做：

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

- Ibrahima Timera

9

为了在 PHP 7.2 上使用，我使用了 sudo apt-get install php-gd php-xml php7.2-mbstring 命令。 - Dariux

2

终于了！非常感谢，亲切的先生。 - Zariweya

14

在php7.2 Ubuntu 18.04 LTS和ubuntu 19.04中

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

运作得像魔法一样

- Ian Samz

8

这个错误的快速解决方案

运行此命令

composer install --ignore-platform-reqs

该命令不考虑操作系统或平台。

- KATHEESKUMAR

1

它对我起作用了。Composer正在检查平台要求，但实际上这些要求已经得到满足。运行此命令后，一切都按预期工作。 - Buraco

7

如果您正在使用php 7.3进行laravel 5.7开发，这个方法适用于我。

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

- Fil

这是我使用的唯一可行的方式，我正在使用：PHP版本7.2.24-1 + ubuntu16.04.1 + deb.sury.org + Laravel 5.8.35。 - LuizEduardoMPF

3

安装了给出的答案中的软件包后，我仍然遇到一些错误，然后我安装了以下软件包，它正常工作：

php-xml

如果需要特定版本:

php7.0-xml

适用于PHP 7.0的命令：

sudo apt-get install php7.0-xml

在某些情况下，您还需要安装一个包php7.0-common。与上述命令相同安装它。

- J4GD33P 51NGH

这里似乎很重要的是PHP版本...我尝试了几次使用php-xml而不是php7.*-xml。 - Md. Mohaiminul Hasan

1

这对我来说适用于php 7.2

sudo apt-get install php7.2-xml

- nanichang

1

很多有关Ubuntu的好答案已经存在。我使用Linux，遇到了同样的问题，但上面的任何命令都没有对我起作用。

在Linux和php70上，我使用了以下命令，效果非常好：

sudo yum install php70-mbstring -y

- suntzu

1

问题：

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.

解决方案：

如果您使用xampp，只需从中删除“;”

;extension=mbstring

在php.ini中，保存它，完成！

- Harikrushna Patel

0

在php7.4中

sudo apt-get install php-gd php-xml php7.4-mbstring

- borma425

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- James · Accepted Answer

您的错误消息已经非常明确地说明了问题：

laravel/framework v5.2.9需要ext-mbstring *->所请求的PHP扩展mbstring在您的系统中丢失。

您的服务器上是否安装并启用了mbstring ？

您可以通过安装libapache2-mod-php5包来安装mbstring：

sudo apt-get install libapache2-mod-php5

或者独立安装：

sudo apt-get install php-mbstring

安装它也会启用它，但是如果已经安装，您还可以通过编辑您的php.ini文件并删除注释它的;来启用它。

如果这是在您的本地机器上，则请按适当的步骤在您的环境中安装它。