当我尝试在prod中安装composer时，我在安装composer时出现以下错误，任何人都可以建议我帮忙。谢谢。
Problem 1
- Installation request for doctrine/annotations v1.5.0 -> satisfiable by doctrine/annotations[v1.5.0].
- doctrine/annotations v1.5.0 requires php ^7.1 -> your PHP version (7.0.22) does not satisfy that requirement.
Problem 2
- Installation request for doctrine/cache v1.7.1 -> satisfiable by doctrine/cache[v1.7.1].
- doctrine/cache v1.7.1 requires php ~7.1 -> your PHP version (7.0.22) does not satisfy that requirement.
Problem 3
- Installation request for doctrine/collections v1.5.0 -> satisfiable by doctrine/collections[v1.5.0].
- doctrine/collections v1.5.0 requires php ^7.1 -> your PHP version (7.0.22) does not satisfy that requirement.
Problem 4
- Installation request for doctrine/common v2.8.1 -> satisfiable by doctrine/common[v2.8.1].
- doctrine/common v2.8.1 requires php ~7.1 -> your PHP version (7.0.22) does not satisfy that requirement.
Problem 5
- Installation request for doctrine/dbal v2.6.2 -> satisfiable by doctrine/dbal[v2.6.2].
- doctrine/dbal v2.6.2 requires php ^7.1 -> your PHP version (7.0.22) does not satisfy that requirement.
Problem 6
- Installation request for doctrine/instantiator 1.1.0 -> satisfiable by doctrine/instantiator[1.1.0].
- doctrine/instantiator 1.1.0 requires php ^7.1 -> your PHP version (7.0.22) does not satisfy that requirement.
Problem 7
- doctrine/instantiator 1.1.0 requires php ^7.1 -> your PHP version (7.0.22) does not satisfy that requirement.
- phpunit/phpunit-mock-objects 3.4.4 requires doctrine/instantiator ^1.0.2 -> satisfiable by doctrine/instantiator[1.1.0].
- Installation request for phpunit/phpunit-mock-objects 3.4.4 -> satisfiable by phpunit/phpunit-mock-objects[3.4.4].
答案 0 :(得分：0)
你的composer.lock是在运行PHP7.1的计算机上制作的，但是你的prod服务器运行的是7.0.22，或者你对（我猜）教条的版本限制太高了。
要绕过第一个，请将其添加到composer.json中：
...
"config": {
"platform": {
"php": "7.0.22"
}
}
...
，运行composer update并检入生成的composer.lock文件。通过这种方式，您可以强制编写器为您的生产php版本选择包，该版本应该与您的开发版本（7.1）兼容。
答案 1 :(得分：0)
它比编辑composer.json更简单的解决方案
使用带有composer命令的开关--ignore-platform-reqs
例如
composer update --ignore-platform-reqs