无法解决作曲家更新返回要求

Question

$ composer update 
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
    - jenssegers/mongodb v3.3.1 requires mongodb/mongodb ^1.0.0 -> satisfiable by mongodb/mongodb[1.2.0, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.1.0, 1.1.1, 1.1.2].
    - jenssegers/mongodb v3.3.0 requires mongodb/mongodb ^1.0.0 -> satisfiable by mongodb/mongodb[1.2.0, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.1.0, 1.1.1, 1.1.2].
    - jenssegers/mongodb v3.3.1 requires mongodb/mongodb ^1.0.0 -> satisfiable by mongodb/mongodb[1.2.0, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.1.0, 1.1.1, 1.1.2].
    - mongodb/mongodb 1.2.0 requires ext-mongodb ^1.3.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.1.2 requires ext-mongodb ^1.2.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.1.1 requires ext-mongodb ^1.2.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.1.0 requires ext-mongodb ^1.2.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.0.5 requires ext-mongodb ^1.1.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.0.4 requires ext-mongodb ^1.1.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.0.3 requires ext-mongodb ^1.1.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.0.2 requires ext-mongodb ^1.1.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.0.1 requires ext-mongodb ^1.1.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.0.0 requires ext-mongodb ^1.1.0 -> the requested PHP extension mongodb is missing from your system.
    - mongodb/mongodb 1.2.0 requires ext-mongodb ^1.3.0 -> the requested PHP extension mongodb is missing from your system.
    - Installation request for jenssegers/mongodb ^3.3 -> satisfiable by jenssegers/mongodb[v3.3.0, v3.3.1].

  To enable extensions, verify that they are enabled in your .ini files:
    - /usr/local/etc/php/7.1/php.ini
    - /usr/local/etc/php/7.1/conf.d/php-memory-limits.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

Answer 1

问题是，mongoDB扩展没有安装我们过时的。

检查留档为您的操作系统安装mongoDB：https://secure.php.net/manual/en/mongodb.setup.php

并确保在php中启用了扩展。ini，通过检查：

extension=mongodb.so

如果您正在使用的系统与代码将运行的系统不同，并且这就是您没有安装扩展的原因，那么您也可以选择忽略平台要求。