在Ubuntu中創建Laravel應用程序時出錯

Question

我正在使用Ubuntu 17.04。 我試圖訪問和/etc/php/7.0/cli和編輯的php.ini文件。 但是無論如何都沒有幫助。 如何啟用以下擴展。

ninja@ninja:~/Documents/lartest$ laravel new demo

    Crafting application...
    Cannot create cache directory /home/ninja/.composer/cache/repo/https---packagist.org/, or directory is not writable. Proceeding without cache
    Cannot create cache directory /home/ninja/.composer/cache/files/, or directory is not writable. Proceeding without cache
    Cannot create cache directory /home/ninja/.composer/cache/repo/https---packagist.org/, or directory is not writable. Proceeding without cache
    Loading composer repositories with package information
    Installing dependencies (including require-dev) from lock file
    Your requirements could not be resolved to an installable set of packages.

      Problem 1
        - Installation request for phpunit/php-code-coverage 4.0.8 -> satisfiable by phpunit/php-code-coverage[4.0.8].
        - phpunit/php-code-coverage 4.0.8 requires ext-dom * -> the requested PHP extension dom is missing from your system.
      Problem 2
        - Installation request for phpunit/phpunit 5.7.21 -> satisfiable by phpunit/phpunit[5.7.21].
        - phpunit/phpunit 5.7.21 requires ext-dom * -> the requested PHP extension dom is missing from your system.

      To enable extensions, verify that they are enabled in your .ini files:
        - /etc/php/7.0/cli/php.ini
        - /etc/php/7.0/cli/conf.d/10-opcache.ini
        - /etc/php/7.0/cli/conf.d/10-pdo.ini
        - /etc/php/7.0/cli/conf.d/20-calendar.ini
        - /etc/php/7.0/cli/conf.d/20-ctype.ini
        - /etc/php/7.0/cli/conf.d/20-curl.ini
        - /etc/php/7.0/cli/conf.d/20-exif.ini
        - /etc/php/7.0/cli/conf.d/20-fileinfo.ini
        - /etc/php/7.0/cli/conf.d/20-ftp.ini
        - /etc/php/7.0/cli/conf.d/20-gettext.ini
        - /etc/php/7.0/cli/conf.d/20-iconv.ini
        - /etc/php/7.0/cli/conf.d/20-json.ini
        - /etc/php/7.0/cli/conf.d/20-mbstring.ini
        - /etc/php/7.0/cli/conf.d/20-phar.ini
        - /etc/php/7.0/cli/conf.d/20-posix.ini
        - /etc/php/7.0/cli/conf.d/20-readline.ini
        - /etc/php/7.0/cli/conf.d/20-shmop.ini
        - /etc/php/7.0/cli/conf.d/20-sockets.ini
        - /etc/php/7.0/cli/conf.d/20-sysvmsg.ini
        - /etc/php/7.0/cli/conf.d/20-sysvsem.ini
        - /etc/php/7.0/cli/conf.d/20-sysvshm.ini
        - /etc/php/7.0/cli/conf.d/20-tokenizer.ini
        - /etc/php/7.0/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.
    Application ready! Build something amazing.

---

執行服務命令時也出現錯誤

 ninja@ninja:~/Documents/lartest/demo$ php artisan serve PHP Warning: require(/home/ninja/Documents/lartest/demo/bootstrap/../vendor/autoload.php): failed to open stream: No such file or directory in /home/ninja/Documents/lartest/demo/bootstrap/autoload.php on line 17 PHP Fatal error: require(): Failed opening required '/home/ninja/Documents/lartest/demo/bootstrap/../vendor/autoload.php' (include_path='.:/usr/share/php') in /home/ninja/Documents/lartest/demo/bootstrap/autoload.php on line 17 

Answer 1

假設您已經成功安裝了php7.0-cli。

現在在終端中運行以下命令：

sudo apt-get install php7.0-mbstring
sudo apt-get install php7.0-xml

然后嘗試再次安裝Laravel。

讓我知道您是否仍然遇到任何問題。

Answer 2

首先為php擴展安裝ext-dom，然后再次運行compser update

Answer 3

您可以先完成Laravel所需的依賴關系，然后再安裝laravel。 有關依賴項的信息，請參見此處

我可以這樣：

sudo apt-get install software-properties-common
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update

在這里我使用PHP 7.1

sudo apt-get install php7.1

如果要使用其他版本，請自行更改。

PHP完成安裝后，可以繼續安裝所需的擴展名。

sudo apt-get install php7.1 php7.1-cli php7.1-common php7.1-json php7.1-opcache php7.1-mysql php7.1-mbstring php7.1-mcrypt php7.1-zip php7.1-xml php7.1-gd

上面的擴展應該laravel可以順利安裝。 您也可以僅采用上述擴展中的一個或多個，例如：

sudo apt-get install php7.1-mbstring php7.1-xml

然后重新啟動服務器。

希望有用。