如何在Ubuntu 16.04中安装Laravel 5.6？

Question

我使用以下命令将PHP 7.0升级到7.1:

1. sudo add-apt-repository ppa:ondrej/php
2. sudo apt-get update
3. sudo apt-get install php7.1

我从 laravel.com 运行了以下命令：

composer create-project --prefer-dist laravel/laravel blog

运行此代码后，出现以下错误：

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

Problem 1
- laravel/framework v5.6.0 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- laravel/framework 5.6.x-dev requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
- Installation request for laravel/framework 5.6.* -> satisfiable by laravel/framework[5.6.x-dev, v5.6.0].

To enable extensions, verify that they are enabled in those .ini files:
- /etc/php/7.1/cli/php.ini
- /etc/php/7.1/cli/conf.d/10-opcache.ini
- /etc/php/7.1/cli/conf.d/10-pdo.ini
- /etc/php/7.1/cli/conf.d/20-calendar.ini
- /etc/php/7.1/cli/conf.d/20-ctype.ini
- /etc/php/7.1/cli/conf.d/20-exif.ini
- /etc/php/7.1/cli/conf.d/20-fileinfo.ini
- /etc/php/7.1/cli/conf.d/20-ftp.ini
- /etc/php/7.1/cli/conf.d/20-gettext.ini
- /etc/php/7.1/cli/conf.d/20-iconv.ini
- /etc/php/7.1/cli/conf.d/20-json.ini
- /etc/php/7.1/cli/conf.d/20-phar.ini
- /etc/php/7.1/cli/conf.d/20-posix.ini
- /etc/php/7.1/cli/conf.d/20-readline.ini
- /etc/php/7.1/cli/conf.d/20-shmop.ini
- /etc/php/7.1/cli/conf.d/20-sockets.ini
- /etc/php/7.1/cli/conf.d/20-sysvmsg.ini
- /etc/php/7.1/cli/conf.d/20-sysvsem.ini
- /etc/php/7.1/cli/conf.d/20-sysvshm.ini
- /etc/php/7.1/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.

更新 1：

我运行了以下命令： sudo apt-get install php7.1-mbstring sudo apt-get install libapache2-mod-php7.1

在运行composer create-project --prefer-dist laravel/laravel blog命令后，出现错误：

Failed to decode response: zlib_decode(): data error
Retrying with degraded mode, check    https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info


[Composer\Downloader\TransportException]                                                                                                     
Your configuration does not allow connection to http://packagist.org. See https://getcomposer.org/doc/06-config.md#secure-http for details. 

如何解决这个错误？

- mySun

---

你尝试安装过 ext-mbstring 吗？ - Amarnasan

没有安装php-mbstring，请尝试使用以下命令进行安装：sudo apt-get install php7.*-mbstring。 - Hiren Gohel

@HirenGohel，你好，请查看我的问题：-( - mySun

尝试运行以下命令：sudo composer self-update 和 sudo composer clear-cache。 - Hiren Gohel

@mySun：它能工作吗？ - Hiren Gohel

Answer 1

你需要：

安装mbstring：

安装mbstring：

sudo apt-get install php7.1-mbstring
sudo apt-get install libapache2-mod-php7.1

接下来，

重新启动你的服务器：

sudo service apache2 restart
or
sudo service nginx restart

要解决composer的错误，请运行：

sudo composer self-update

sudo composer clear-cache

sudo composer config -g secure-http false

- Sapnesh Naik

---

嗨，运行 sudo apt-get install php7.1-mbstring 然后 sudo service apache2 restart 但是仍然显示相同的错误 :( - mySun

谢谢，但是显示这个错误！：“无法读取/home/shayvard/.composer/auth.json文件 file_get_contents(/home/shayvard/.composer/auth.json)：无法打开流：权限被拒绝” :-( - mySun

@mySun 使用 sudo - Sapnesh Naik

我使用 sudo 命令，但是显示出现 Failed to decode response: zlib_decode(): data error Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info Your requirements could not be resolved to an installable set of packages. 错误 :-( - mySun

@mySun 请发布另一个问题，这样其他人也可以帮助您。在评论中讨论是不明智的。如果答案对您有帮助，请不要忘记接受它！ - Sapnesh Naik

Answer 2

按照以下步骤安装 Laravel：

安装 Composer

curl -sS https://getcomposer.org/installer | php
  
sudo mv composer.phar /usr/local/bin/composer
  
sudo chmod +x /usr/local/bin/composer

安装完成后，在终端中输入composer，您将会得到以下结果

Laravel基本要求：

如果您没有使用Homestead，则需要确保您的服务器满足以下要求：

• PHP >= 7.3
• BCMath PHP扩展
• Ctype PHP扩展
• Fileinfo PHP扩展
• JSON PHP扩展
• Mbstring PHP扩展 sudo apt-get install php-mbstring
• OpenSSL PHP扩展
• PDO PHP扩展
• Tokenizer PHP扩展
• XML PHP扩展 sudo apt-get install php-xml

安装Laravel

composer create-project --prefer-dist laravel/laravel project-name

在安装 Laravel 后，将权限分配给您的 storage, bootstrap 文件夹，如下所示：

sudo chmod  -R 777 storage  

sudo chmod  -R 777 bootstrap

现在你的项目已经准备好运行了，可以使用serve命令：

 php artisan serve

查看详细的文档，请访问laravel-installation

- Ankit Jindal

Answer 3

sudo apt-get install php libapache2-mod-php php-common php-mbstring php-xmlrpc php-soap php-gd php-xml php-mysql php-cli php-mcrypt

这将安装 Laravel 所需的所有 PHP 扩展。

- Syam