如何在Ubuntu上安装这些PHP扩展？

Question

• Ubuntu 16.04。
• Nginx版本：Nginx / 1.10.0（Ubuntu）
• PHP 7.0.8-0ubuntu0.16.04.3

当我composer install -v在Magento 2目录中运行时，得到以下信息：

Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Dependency resolution completed in 0.000 seconds
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - The requested PHP extension ext-gd * is missing from your system. Install or enable PHP's gd extension.
  Problem 2
    - The requested PHP extension ext-dom * is missing from your system. Install or enable PHP's dom extension.
  Problem 3
    - The requested PHP extension ext-simplexml * is missing from your system. Install or enable PHP's simplexml extension.
  Problem 4
    - The requested PHP extension ext-mcrypt * is missing from your system. Install or enable PHP's mcrypt extension.
  Problem 5
    - The requested PHP extension ext-curl * is missing from your system. Install or enable PHP's curl extension.
  Problem 6
    - The requested PHP extension ext-intl * is missing from your system. Install or enable PHP's intl extension.
  Problem 7
    - The requested PHP extension ext-xsl * is missing from your system. Install or enable PHP's xsl extension.
  Problem 8
    - The requested PHP extension ext-mbstring * is missing from your system. Install or enable PHP's mbstring extension.
  Problem 9
    - The requested PHP extension ext-zip * is missing from your system. Install or enable PHP's zip extension.
  Problem 10
    - Installation request for braintree/braintree_php 3.7.0 -> satisfiable by braintree/braintree_php[3.7.0].
    - braintree/braintree_php 3.7.0 requires ext-curl * -> the requested PHP extension curl is missing from your system.
  Problem 11
    - Installation request for pelago/emogrifier v0.1.1 -> satisfiable by pelago/emogrifier[v0.1.1].
    - pelago/emogrifier v0.1.1 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
  Problem 12
    - Installation request for phpunit/phpunit 4.1.0 -> satisfiable by phpunit/phpunit[4.1.0].
    - phpunit/phpunit 4.1.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
  Problem 13
    - Installation request for theseer/fdomdocument 1.6.1 -> satisfiable by theseer/fdomdocument[1.6.1].
    - theseer/fdomdocument 1.6.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
  Problem 14
    - theseer/fdomdocument 1.6.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - sebastian/phpcpd 2.0.0 requires theseer/fdomdocument ~1.4 -> satisfiable by theseer/fdomdocument[1.6.1].
    - Installation request for sebastian/phpcpd 2.0.0 -> satisfiable by sebastian/phpcpd[2.0.0].

如何安装这些扩展？我已经安装了LEMP堆栈。

Answer 1

您很可能可以使用软件包管理器来执行此操作。对于gd扩展，您可以运行

sudo apt-get update && sudo apt-get install php7.0-gd

对于其余的可用扩展，可能有一个类似的软件包。使用apt-cache搜索，您可以搜索软件包。例如

 apt-cache search php7.0

会找到与php7.0相关的所有软件包