title: laravel Installation failed, deleting ./composer.json
body: <p>hi In Laravel Installation
  The following error occurred </p>
  
  <pre><code>user@user-System-Product-Name:/$ composer global require "laravel/installer"
  Changed current directory to /home/user/.config/composer
  
  Using version ^2.0 for laravel/installer
  ./composer.json has been created
  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/installer v2.0.1 requires ext-zip * -&gt; the requested PHP extension zip is missing from your system.
      - laravel/installer v2.0.0 requires ext-zip * -&gt; the requested PHP extension zip is missing from your system.
      - Installation request for laravel/installer ^2.0 -&gt; satisfiable by laravel/installer[v2.0.0, v2.0.1].
  
    To enable extensions, verify that they are enabled in your .ini files:
      - /etc/php/7.1/cli/php.ini
      - /etc/php/7.1/cli/conf.d/10-mysqlnd.ini
      - /etc/php/7.1/cli/conf.d/10-opcache.ini
      - /etc/php/7.1/cli/conf.d/10-pdo.ini
      - /etc/php/7.1/cli/conf.d/20-calendar.ini
      - /etc/php/7.1/cli/conf.d/20-ctype.ini
      - /etc/php/7.1/cli/conf.d/20-exif.ini
      - /etc/php/7.1/cli/conf.d/20-fileinfo.ini
      - /etc/php/7.1/cli/conf.d/20-ftp.ini
      - /etc/php/7.1/cli/conf.d/20-gettext.ini
      - /etc/php/7.1/cli/conf.d/20-iconv.ini
      - /etc/php/7.1/cli/conf.d/20-json.ini
      - /etc/php/7.1/cli/conf.d/20-mcrypt.ini
      - /etc/php/7.1/cli/conf.d/20-mysqli.ini
      - /etc/php/7.1/cli/conf.d/20-pdo_mysql.ini
      - /etc/php/7.1/cli/conf.d/20-phar.ini
      - /etc/php/7.1/cli/conf.d/20-posix.ini
      - /etc/php/7.1/cli/conf.d/20-readline.ini
      - /etc/php/7.1/cli/conf.d/20-shmop.ini
      - /etc/php/7.1/cli/conf.d/20-sockets.ini
      - /etc/php/7.1/cli/conf.d/20-sysvmsg.ini
      - /etc/php/7.1/cli/conf.d/20-sysvsem.ini
      - /etc/php/7.1/cli/conf.d/20-sysvshm.ini
      - /etc/php/7.1/cli/conf.d/20-tokenizer.ini
    You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.
  
  Installation failed, deleting ./composer.json.
  </code></pre>
  
  <p>Installation failed, deleting ./composer.json.
  I'm using the latest composer version...
  php7 , mysql , apache2  already installed</p>