API平台v1.1.1和Symfony 3.2.8 composer冲突

Question

我已经启动并运行了Symfony Demo Application，现在我正在尝试install API Platform as a standalone bundle。

我使用的是PHP 7.0.10和最新的composer，但我之前的测试使用的是PHP 5.6.20。

当我尝试添加API Platform Core作为依赖项时，我得到以下错误消息：

$ composer require api-platform/core
Using version ^1.1 for api-platform/core
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for symfony/symfony (locked at v3.2.8, required as ^3
.2) -> satisfiable by symfony/symfony[v3.2.8].
    - api-platform/core v1.1.0 requires phpdocumentor/reflection ^1.0.7 -> satis
fiable by phpdocumentor/reflection[1.0.7].
    - api-platform/core v1.1.1 requires phpdocumentor/reflection ^1.0.7 -> satis
fiable by phpdocumentor/reflection[1.0.7].
    - Conclusion: don't install phpdocumentor/reflection 1.0.7
    - Installation request for api-platform/core ^1.1 -> satisfiable by api-plat
form/core[v1.1.0, v1.1.1].


Installation failed, reverting ./composer.json to its original content.

Answer 1

在composer.json文件中：

查找：

"symfony/symfony": "3.2.*",

替换为：

"symfony/symfony": "3.3.*",

...or：

"symfony/symfony": "^3.2.*",

您可能需要(希望)首先运行composer update，然后使用composer require api-platform/core添加api-platform包，以便正确加载所有依赖项，但这并不是必需的。