无法在 ubuntu 18 中安装 Laravel Telescope [重复]答案

【问题标题】：Can't install Laravel Telescope in ubuntu 18 [duplicate]无法在 ubuntu 18 中安装 Laravel Telescope [重复]
【发布时间】：2019-09-12 19:03:22
【问题描述】：

我正在 Laravel 5.8 中创建一个新项目，我也想安装 Telescope，但是当我在我的项目中执行命令时：

composer require laravel/telescope

输出：

./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
    - laravel/telescope 2.0.x-dev requires moontoast/math ^1.1 -> satisfiable by moontoast/math[1.1.0, 1.1.1, 1.1.2].
    - laravel/telescope v2.0 requires moontoast/math ^1.1 -> satisfiable by moontoast/math[1.1.0, 1.1.1, 1.1.2].
    - laravel/telescope v2.0.1 requires moontoast/math ^1.1 -> satisfiable by moontoast/math[1.1.0, 1.1.1, 1.1.2].
    - laravel/telescope v2.0.2 requires moontoast/math ^1.1 -> satisfiable by moontoast/math[1.1.0, 1.1.1, 1.1.2].
    - laravel/telescope v2.0.3 requires moontoast/math ^1.1 -> satisfiable by moontoast/math[1.1.0, 1.1.1, 1.1.2].
    - laravel/telescope v2.0.4 requires moontoast/math ^1.1 -> satisfiable by moontoast/math[1.1.0, 1.1.1, 1.1.2].
    - moontoast/math 1.1.2 requires ext-bcmath * -> the requested PHP extension bcmath is missing from your system.
    - moontoast/math 1.1.1 requires ext-bcmath * -> the requested PHP extension bcmath is missing from your system.
    - moontoast/math 1.1.0 requires ext-bcmath * -> the requested PHP extension bcmath is missing from your system.
    - Installation request for laravel/telescope ^2.0 -> satisfiable by laravel/telescope[2.0.x-dev, v2.0, v2.0.1, v2.0.2, v2.0.3, v2.0.4].

  To enable extensions, verify that they are enabled in your .ini files:
    - /etc/php/7.2/cli/php.ini
    - /etc/php/7.2/cli/conf.d/10-mysqlnd.ini
    - /etc/php/7.2/cli/conf.d/10-opcache.ini
    - /etc/php/7.2/cli/conf.d/10-pdo.ini
    - /etc/php/7.2/cli/conf.d/15-xml.ini
    - /etc/php/7.2/cli/conf.d/20-calendar.ini
    - /etc/php/7.2/cli/conf.d/20-ctype.ini
    - /etc/php/7.2/cli/conf.d/20-dom.ini
    - /etc/php/7.2/cli/conf.d/20-exif.ini
    - /etc/php/7.2/cli/conf.d/20-fileinfo.ini
    - /etc/php/7.2/cli/conf.d/20-ftp.ini
    - /etc/php/7.2/cli/conf.d/20-gd.ini
    - /etc/php/7.2/cli/conf.d/20-gettext.ini
    - /etc/php/7.2/cli/conf.d/20-iconv.ini
    - /etc/php/7.2/cli/conf.d/20-json.ini
    - /etc/php/7.2/cli/conf.d/20-mbstring.ini
    - /etc/php/7.2/cli/conf.d/20-mysqli.ini
    - /etc/php/7.2/cli/conf.d/20-pdo_mysql.ini
    - /etc/php/7.2/cli/conf.d/20-phar.ini
    - /etc/php/7.2/cli/conf.d/20-posix.ini
    - /etc/php/7.2/cli/conf.d/20-readline.ini
    - /etc/php/7.2/cli/conf.d/20-shmop.ini
    - /etc/php/7.2/cli/conf.d/20-simplexml.ini
    - /etc/php/7.2/cli/conf.d/20-sockets.ini
    - /etc/php/7.2/cli/conf.d/20-sysvmsg.ini
    - /etc/php/7.2/cli/conf.d/20-sysvsem.ini
    - /etc/php/7.2/cli/conf.d/20-sysvshm.ini
    - /etc/php/7.2/cli/conf.d/20-tokenizer.ini
    - /etc/php/7.2/cli/conf.d/20-wddx.ini
    - /etc/php/7.2/cli/conf.d/20-xmlreader.ini
    - /etc/php/7.2/cli/conf.d/20-xmlwriter.ini
    - /etc/php/7.2/cli/conf.d/20-xsl.ini
    - /etc/php/7.2/cli/conf.d/20-zip.ini   You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

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

如何安装缺少的依赖项？我正在开发 PHP 7.2 和 ubuntu 18.04.2。

【问题讨论】：

标签： php ubuntu-18.04 laravel-5.8

【解决方案1】：

您必须安装 bcmath 扩展。在您的情况下，可以通过运行来完成

sudo apt-get install php7.2-bcmath

sudo apt-get install php7.1-bcmath 如果你有 PHP 7.1

然后再次运行 require 命令。

【讨论】：

composer require "laravel/telescope":"~1.0" 为我工作。我正在使用 Laravel v 5.7.11
如果你仍然遇到这个问题，那么你可以通过运行 sudo service apache2 restart 来加载它