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使用 Composer 安装 Laravel 时出现的问题

tag-icon • tag-icon php laravel composer
使用 Composer 安装 Laravel 时出现的问题

使用 Ubuntu 20.04 和 PHP 8

执行 Laravel 的 composer install 时

Do not run Composer as root/super user! See https://getcomposer.org/root for details
Continue as root/super user [yes]? 
Composer is operating significantly slower than normal because you do not have the PHP curl extension enabled.
No composer.lock file present. Updating dependencies to latest instead of installing from lock file. See https://getcomposer.org/install for more information.
Loading composer repositories with package information
Info from https://repo.packagist.org: #StandWithUkraine
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - phpunit/phpunit[9.5.10, ..., 9.5.x-dev] require ext-dom * -> it is missing from your system. Install or enable PHP's dom extension.
    - Root composer.json requires phpunit/phpunit ^9.5.10 -> satisfiable by phpunit/phpunit[9.5.10, ..., 9.5.x-dev].

To enable extensions, verify that they are enabled in your .ini files:
    - /etc/php/8.0/cli/php.ini
    - /etc/php/8.0/cli/conf.d/10-mysqlnd.ini
    - /etc/php/8.0/cli/conf.d/10-opcache.ini
    - /etc/php/8.0/cli/conf.d/10-pdo.ini
    - /etc/php/8.0/cli/conf.d/20-calendar.ini
    - /etc/php/8.0/cli/conf.d/20-ctype.ini
    - /etc/php/8.0/cli/conf.d/20-exif.ini
    - /etc/php/8.0/cli/conf.d/20-ffi.ini
    - /etc/php/8.0/cli/conf.d/20-fileinfo.ini
    - /etc/php/8.0/cli/conf.d/20-ftp.ini
    - /etc/php/8.0/cli/conf.d/20-gettext.ini
    - /etc/php/8.0/cli/conf.d/20-iconv.ini
    - /etc/php/8.0/cli/conf.d/20-mysqli.ini
    - /etc/php/8.0/cli/conf.d/20-pdo_mysql.ini
    - /etc/php/8.0/cli/conf.d/20-pdo_sqlite.ini
    - /etc/php/8.0/cli/conf.d/20-phar.ini
    - /etc/php/8.0/cli/conf.d/20-posix.ini
    - /etc/php/8.0/cli/conf.d/20-readline.ini
    - /etc/php/8.0/cli/conf.d/20-shmop.ini
    - /etc/php/8.0/cli/conf.d/20-sockets.ini
    - /etc/php/8.0/cli/conf.d/20-sqlite3.ini
    - /etc/php/8.0/cli/conf.d/20-sysvmsg.ini
    - /etc/php/8.0/cli/conf.d/20-sysvsem.ini
    - /etc/php/8.0/cli/conf.d/20-sysvshm.ini
    - /etc/php/8.0/cli/conf.d/20-tokenizer.ini
    - /etc/php/8.0/cli/conf.d/20-zip.ini
You can also run `php --ini` in a terminal to see which files are used by PHP in CLI mode.
Alternatively, you can run Composer with `--ignore-platform-req=ext-dom` to temporarily ignore these required extensions.

当我尝试安装 sudo apt-get install php-mbstring 或 sudo apt install php-xml 或 composer update 时，我得到了同样的错误，而且我已经安装了 mbstring 和 xml

答案1

第一的

sudo apt-get install php8.0-curl

第二

sudo apt-get install php-curl

答案2

Composer 错误消息指出有一个扩展未安装/启用：

require ext-dom * -> it is missing from your system.

您可以使用此命令来安装它：

sudo apt install php8.1-xml

然后使用此命令启用它：

sudo phpenmod xml

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