【发布时间】：2019-07-18 22:37:23
【问题描述】：
我正在尝试通过 composer 在我的网络服务器上安装 Magento 2。在必须将以下内容添加到 composer.json 文件中以使所有内容在使用 php 版本的情况下在公平竞争环境中运行：
"config": {
"platform": {
"php": "7.2.14"
}
}
然后当我composer install：
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 392 installs, 0 updates, 0 removals
- Installing magento/magento-composer-installer (0.1.13): Downloading (100%)
- Installing symfony/polyfill-ctype (v1.10.0): Downloading (100%)
- Installing symfony/polyfill-mbstring (v1.10.0): Downloading (100%)
- Installing zendframework/zend-stdlib (2.7.7): Downloading (100%)
- Installing zendframework/zend-hydrator (1.1.0): Downloading (100%)
- Installing psr/container (1.0.0): Downloading (100%)
- Installing container-interop/container-interop (1.2.0): Downloading (100%)
- Installing zendframework/zend-validator (2.11.1): Downloading (100%)
- Installing zendframework/zend-escaper (2.6.0): Downloading (100%)
- Installing zendframework/zend-uri (2.6.1): Downloading (100%)
- Installing psr/http-message (1.0.1): Downloading (100%)
- Installing zendframework/zend-diactoros (1.8.6): Downloading (100%)
- Installing zendframework/zend-loader (2.6.0): Downloading (100%)
- Installing zendframework/zend-http (2.8.4): Downloading (100%)
- Installing zendframework/zend-psr7bridge (0.2.2): Downloading (100%)
- Installing zendframework/zend-servicemanager (2.7.11): Downloading (100%)
- Installing zendframework/zend-filter (2.9.1): Downloading (100%)
- Installing zendframework/zend-inputfilter (2.10.0): Downloading (100%)
- Installing zendframework/zend-form (2.13.0): Downloading (100%)
- Installing zendframework/zend-eventmanager (2.6.4): Downloading (100%)
- Installing zendframework/zend-code (3.3.1): Downloading (100%)
- Installing zendframework/zend-console (2.7.0): Downloading (100%)
- Installing zendframework/zend-mvc (2.7.15): Downloading (100%)
- Installing zendframework/zend-math (2.7.1): Downloading (100%)
- Installing zendframework/zend-crypt (2.6.0): Downloading (100%)
- Installing tedivm/jshrink (v1.3.1): Downloading (100%)
- Installing symfony/process (v4.1.11): Downloading (100%)
- Installing symfony/console (v4.1.11): Downloading (100%)
- Installing oyejorge/less.php (v1.7.0.14): Downloading (100%)
- Installing psr/log (1.1.0): Downloading (100%)
- Installing monolog/monolog (1.24.0): Downloading (100%)
- Installing magento/zendframework1 (1.14.1): Downloading (100%)
- Installing symfony/finder (v4.2.3): Downloading (100%)
- Installing symfony/filesystem (v4.2.3): Downloading (100%)
- Installing seld/phar-utils (1.0.1): Downloading (100%)
- Installing seld/jsonlint (1.7.1): Downloading (100%)
- Installing justinrainbow/json-schema (5.2.8): Downloading (100%)
- Installing composer/xdebug-handler (1.3.2): Downloading (100%)
- Installing composer/spdx-licenses (1.5.0): Downloading (100%)
- Installing composer/semver (1.4.2): Downloading (100%)
- Installing composer/ca-bundle (1.1.4): Downloading (100%)
- Installing composer/composer (1.8.4): Downloading (100%)
- Installing colinmollenhour/credis (1.10.0): Downloading (100%)
- Installing colinmollenhour/php-redis-session-abstract (v1.4.0): Downloading (100%)
- Installing magento/framework (102.0.0): Downloading (100%)
- Installing magento/inventory-composer-installer (1.0.3): Downloading (100%)
PHP Fatal error: Uncaught TypeError: Return value of Magento\InventoryComposerInstaller\Plugin::initModuleDeployment() must be an instance of Magento\InventoryComposerInstaller\void, none returned in /var/www/vhosts/blah/project-community-edition/vendor/magento/inventory-composer-installer/src/Plugin.php:69
Stack trace:
#0 /var/www/vhosts/blah/project-community-edition/vendor/magento/inventory-composer-installer/src/Plugin.php(88): Magento\InventoryComposerInstaller\Plugin->initModuleDeployment()
#1 /var/www/vhosts/blah/project-community-edition/vendor/magento/inventory-composer-installer/src/Plugin.php(82): Magento\InventoryComposerInstaller\Plugin->getModuleDeployment()
#2 [internal function]: Magento\InventoryComposerInstaller\Plugin->onPackageChange(Object(Composer\Installer\PackageEvent))
#3 phar:///usr/lib/plesk-9.0/composer.phar/src/Composer/EventDispatcher/EventDispatcher.php(176): call_user_func(Array, Object(Composer\Installer\PackageEvent))
#4 phar:///usr/lib/plesk-9.0/comp in /var/www/vhosts/blah/project-community-edition/vendor/magento/inventory-composer-installer/src/Plugin.php on line 69
Fatal error: Uncaught TypeError: Return value of Magento\InventoryComposerInstaller\Plugin::initModuleDeployment() must be an instance of Magento\InventoryComposerInstaller\void, none returned in /var/www/vhosts/blah/project-community-edition/vendor/magento/inventory-composer-installer/src/Plugin.php:69
Stack trace:
#0 /var/www/vhosts/blah/project-community-edition/vendor/magento/inventory-composer-installer/src/Plugin.php(88): Magento\InventoryComposerInstaller\Plugin->initModuleDeployment()
#1 /var/www/vhosts/blah/project-community-edition/vendor/magento/inventory-composer-installer/src/Plugin.php(82): Magento\InventoryComposerInstaller\Plugin->getModuleDeployment()
#2 [internal function]: Magento\InventoryComposerInstaller\Plugin->onPackageChange(Object(Composer\Installer\PackageEvent))
#3 phar:///usr/lib/plesk-9.0/composer.phar/src/Composer/EventDispatcher/EventDispatcher.php(176): call_user_func(Array, Object(Composer\Installer\PackageEvent))
#4 phar:///usr/lib/plesk-9.0/comp in /var/www/vhosts/blah/project-community-edition/vendor/magento/inventory-composer-installer/src/Plugin.php on line 69
我没有运气四处寻找与 Magento 相关的这个问题的帮助。一些与 Composer 相关的类似问题，但与 Magento 无关，用户要求提供有关 composer 版本和 php 版本等的更多信息。以下是这些线程中请求的信息：
$ composer --version
Composer version 1.9-dev (blah) 2019-02-08 16:02:33
$ composer show composer/composer | grep versions
versions : * 1.8.4
$ composer depends composer/composer
magento/framework 102.0.0 requires composer/composer (^1.6)
$ php -version
PHP 7.0.32-0ubuntu0.16.04.1 (cli) ( NTS )
Plesk 中的 PHP 版本：7.2.14
phpinfo() 中列出的 PHP 版本：7.2.14
目前，我对如何处理这个问题感到困惑。任何建议或指示将不胜感激。这是我第一次使用 Composer 进行安装，由于缺乏对 linux/bash 等的理解/经验，我通常会尽量避免使用命令行。
提前致谢
【问题讨论】：
-
您也应该将 CLI 版本更改为 PHP 7.2。该软件包似乎使用 PHP 7.1 作为最低版本（因为他们在其代码中使用返回类型
void，直到 PHP 7.1 才引入）。 -
感谢@MagnusEriksson，我将与主持人交谈。我们之前讨论过 CLI 版本，但是主持人表示在 composer.conf 文件中添加指定 php 版本应该可以修复 php 版本不兼容问题。担心的是已经在使用 CLI 的其他网站（即我想要移动到此 M2 安装的 M1 实例）可能产生的影响。
-
问题在于 composer 是一个 PHP 包，它使用 PHP 运行。因此，它需要使用 PHP 读取 composer 文件，然后才能知道它应该使用哪个 PHP 版本。我不确定您的主机是如何处理的，但这听起来有点奇怪。
-
平台配置可用于告诉 Composer 在解析依赖项时采用哪个 PHP 版本。但是，这仅应用于强制使用较旧的 PHP 版本，以用于使用比稍后执行应用程序的版本更新的 PHP 版本执行 Composer 的情况。因此，在您的情况下，您可以将其设置为较旧的 PHP 版本（即 7.0.32）。
标签： php magento composer-php magento2