使用composer安装laravel-admin及其过程中遇到的坑
前提：已安装好laravel（5.5以上版本）,并且能够运行，设置好数据库连接并且能成功连接
进入项目目录，使用composer安装报如下错误：
$ composer require encore/laravel-admin
Using version ^1.6 for encore/laravel-admin
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
VirtualAlloc() failed: [0x00000008] ▒洢▒▒▒㣬▒▒▒▒▒▒▒▒▒▒
VirtualFree() failed: [0x000001e7] ▒▒ͼ▒▒▒▒▒▒Ч▒ĵ▒ַ▒▒
VirtualAlloc() failed: [0x00000008] ▒洢▒▒▒㣬▒▒▒▒▒▒▒▒▒▒
VirtualFree() failed: [0x000001e7] ▒▒ͼ▒▒▒▒▒▒Ч▒ĵ▒ַ▒▒
PHP Fatal error: Out of memory (allocated 511705088) (tried to allocate 4096 bytes) in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/DependencyResolver/Solver.php on line 220
Fatal error: Out of memory (allocated 511705088) (tried to allocate 4096 bytes) in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/DependencyResolver/Solver.php on line 220
看错误内容为内存不足，于是修改php.ini中内存限制参数为-1，即不限制PHP内存
memory_limit = -1重启服务器，再次安装，还是报相同错误，于是经过一番谷歌百度，无非就是增大内存限制、更新composer等等。具体可以参考以下两篇文章How to solve Composer install/update error: VirtualAlloc() failed: [0x00000008] 和 Composer: PHP Fatal error: Out of memory || Setting memory_limit doesn't work
但是最终的结果都是没有效果，还是一如既往地报内存不足，无奈只能重启电脑再试，结果重启后运行安装命令laravel-admin成功安装
$ composer require encore/laravel-admin
Using version ^1.6 for encore/laravel-admin
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Discovered Package: beyondcode/laravel-dump-server
Discovered Package: encore/laravel-admin
Discovered Package: fideloper/proxy
Discovered Package: laravel/tinker
Discovered Package: nesbot/carbon
Discovered Package: nunomaduro/collision
Package manifest generated successfully.
接下来按照laravel-admin进行资源发布:
$ composer require encore/laravel-admin
Using version ^1.6 for encore/laravel-admin
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Discovered Package: beyondcode/laravel-dump-server
Discovered Package: encore/laravel-admin
Discovered Package: fideloper/proxy
Discovered Package: laravel/tinker
Discovered Package: nesbot/carbon
Discovered Package: nunomaduro/collision
Package manifest generated successfully.
然后运行安装命令，报出如下错误：
$ php artisan admin:install
Migration table created successfully.
Migrating: 2014_10_12_000000_create_users_table
Illuminate\Database\QueryException : SQLSTATE[42000]: Syntax error or access
violation: 1071 Specified key was too long; max key length is 1000 bytes (SQL:
alter table `tb_users` add unique `tb_users_email_unique`(`email`))
at D:\bd\treasure_box\vendor\laravel\framework\src\Illuminate\Database\Connect
ion.php:664
660| // If an exception occurs when attempting to run a query, we'll
format the error
661| // message to include the bindings with SQL, which will make th
is exception a
662| // lot more helpful to the developer instead of just the databa
se's errors.
663| catch (Exception $e) {
> 664| throw new QueryException(
665| $query, $this->prepareBindings($bindings), $e
666| );
667| }
668|
Exception trace:
1 Doctrine\DBAL\Driver\PDOException::("SQLSTATE[42000]: Syntax error or acce
ss violation: 1071 Specified key was too long; max key length is 1000 bytes")
D:\bd\treasure_box\vendor\doctrine\dbal\lib\Doctrine\DBAL\Driver\PDOStatem
ent.php:119
2 PDOException::("SQLSTATE[42000]: Syntax error or access violation: 1071 Sp
ecified key was too long; max key length is 1000 bytes")
D:\bd\treasure_box\vendor\doctrine\dbal\lib\Doctrine\DBAL\Driver\PDOStatem
ent.php:117
Please use the argument -v to see more details.
查询资料发现需要修改数据库连接设置config/databases.php如下：
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
'strict' => true,
'engine' => 'InnoDB',
设置好后再次运行，成功安装：
$ php artisan admin:install
Migration table created successfully.
Migrating: 2014_10_12_000000_create_users_table
Migrated: 2014_10_12_000000_create_users_table
Migrating: 2014_10_12_100000_create_password_resets_table
Migrated: 2014_10_12_100000_create_password_resets_table
Migrating: 2016_01_04_173148_create_admin_tables
Migrated: 2016_01_04_173148_create_admin_tables
Database seeding completed successfully.
Admin directory was created: \app\Admin
HomeController file was created: \app\Admin/Controllers/HomeController.php
AuthController file was created: \app\Admin/Controllers/AuthController.php
ExampleController file was created: \app\Admin/Controllers/ExampleController.php
Bootstrap file was created: \app\Admin/bootstrap.php
Routes file was created: \app\Admin/routes.php
运行服务：
$ php artisan serve
Laravel development server started:
成功访问，默认用户名admin密码admin
