title: ext-curl * -> the requested PHP extension curl is missing - Install pusher/pusher-http-laravel Package
body: <p>I developing one Laravel Project with Realtime Notification's so i am using pusher/pusher-http-laravel Package. </p>
  
  <p>When i install this packgae via composer it display following Errors.</p>
  
  <pre><code>Problem 1
      - pusher/pusher-php-server v3.0.1 requires ext-curl * -&gt; the requested PHP extension curl is missing from your system.
      - pusher/pusher-php-server 3.0.0 requires ext-curl * -&gt; the requested PHP extension curl is missing from your system.
      - pusher/pusher-http-laravel v4.0.0 requires pusher/pusher-php-server ^3.0 -&gt; satisfiable by pusher/pusher-php-server[3.0.0, v3.0.1].
      - Installation request for pusher/pusher-http-laravel ^4.0 -&gt; satisfiable by pusher/pusher-http-laravel[v4.0.0].
  
    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-mysqlnd.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/15-xml.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-dom.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-gd.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-intl.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-mysqli.ini
      - /etc/php/7.0/cli/conf.d/20-pdo_mysql.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-simplexml.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-wddx.ini
      - /etc/php/7.0/cli/conf.d/20-xmlreader.ini
      - /etc/php/7.0/cli/conf.d/20-xmlwriter.ini
      - /etc/php/7.0/cli/conf.d/20-xsl.ini
    You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.
  </code></pre>
  
  <p>In my System Environment i already enabled CURL Extension</p>
  
  <p><a href="https://i.stack.imgur.com/O7hy0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/O7hy0.png" alt="enter image description here"></a></p>
  
  <p>How to solve this Error. My php version is 5.6</p>