Question

所以我今天刚开始学习Laravel并安装 Composer 和 Laravel

我使用以下方法创建了一个新的应用程序： -

laravel new application

在我的文件夹中： -

/Library/WebServer/Documents/

但是，当我尝试运行时： -

php artisan serve

我收到此错误： -

Warning: require(/Library/WebServer/Documents/application/bootstrap/../vendor/autoload.php): failed to open stream: No such file or directory in /Library/WebServer/Documents/application/bootstrap/autoload.php on line 17

Fatal error: require(): Failed opening required '/Library/WebServer/Documents/application/bootstrap/../vendor/autoload.php' (include_path='.:') in /Library/WebServer/Documents/application/bootstrap/autoload.php on line 17

我已经尝试过更新我的作曲家，但没有奏效。我在这里做错了什么？

修改

运行 composer install 会给出： -

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

  Problem 1
    - This package requires php >=5.6.4 but your PHP version (5.5.34) does not satisfy that requirement.
  Problem 2
    - Installation request for laravel/framework v5.4.24 -> satisfiable by laravel/framework[v5.4.24].
    - laravel/framework v5.4.24 requires php >=5.6.4 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 3
    - Installation request for phpunit/php-code-coverage 4.0.8 -> satisfiable by phpunit/php-code-coverage[4.0.8].
    - phpunit/php-code-coverage 4.0.8 requires php ^5.6 || ^7.0 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 4
    - Installation request for phpunit/phpunit 5.7.20 -> satisfiable by phpunit/phpunit[5.7.20].
    - phpunit/phpunit 5.7.20 requires php ^5.6 || ^7.0 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 5
    - Installation request for phpunit/phpunit-mock-objects 3.4.3 -> satisfiable by phpunit/phpunit-mock-objects[3.4.3].
    - phpunit/phpunit-mock-objects 3.4.3 requires php ^5.6 || ^7.0 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 6
    - Installation request for sebastian/code-unit-reverse-lookup 1.0.1 -> satisfiable by sebastian/code-unit-reverse-lookup[1.0.1].
    - sebastian/code-unit-reverse-lookup 1.0.1 requires php ^5.6 || ^7.0 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 7
    - Installation request for sebastian/environment 2.0.0 -> satisfiable by sebastian/environment[2.0.0].
    - sebastian/environment 2.0.0 requires php ^5.6 || ^7.0 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 8
    - Installation request for sebastian/object-enumerator 2.0.1 -> satisfiable by sebastian/object-enumerator[2.0.1].
    - sebastian/object-enumerator 2.0.1 requires php >=5.6 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 9
    - Installation request for sebastian/resource-operations 1.0.0 -> satisfiable by sebastian/resource-operations[1.0.0].
    - sebastian/resource-operations 1.0.0 requires php >=5.6.0 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 10
    - Installation request for sebastian/version 2.0.1 -> satisfiable by sebastian/version[2.0.1].
    - sebastian/version 2.0.1 requires php >=5.6 -> your PHP version (5.5.34) does not satisfy that requirement.
  Problem 11
    - laravel/framework v5.4.24 requires php >=5.6.4 -> your PHP version (5.5.34) does not satisfy that requirement.
    - laravel/tinker v1.0.1 requires illuminate/console ~5.1 -> satisfiable by laravel/framework[v5.4.24].
    - Installation request for laravel/tinker v1.0.1 -> satisfiable by laravel/tinker[v1.0.1].

Answer 1

注意：您正在使用laravel 5.4，它需要php 5.6（最低），要么将php更新为5.6或使用laravel 5.2，这就是原因使用此命令安装laravel 5.2

composer create-project --prefer-dist laravel/laravel your_project_name "5.2.*"

转到命令提示符（在Windows中）

设置www / {ur project}的路径

对我来说：www / laravel5

然后输入以下命令：composer install

它将自动安装vendor /

中的所有依赖项

Answer 2

您必须使用composer install安装项目的供应商依赖项：

# go to the app root folder
cd /Library/WebServer/Documents/application/
# install vendor dependecies
composer install

修改

在您的问题编辑之后，错误消息清楚地表明您有一个旧的PHP版本无法运行您的新laravel应用程序。您有两种选择：

将您的php升级到php 5.6.25（最好是php7）

降级您的应用（至5.2。*级别，以下脚本将删除它并安装新的

# go to the app root folder
cd /Library/WebServer/Documents/
rm -rf application
# install vendor dependecies
composer create-project --prefer-dist laravel/laravel application 5.2.*

php artisan serve - 抛出错误

2 个答案:

修改