已安装NGINX - CURL扩展，但系统显示它已丢失

我正在尝试使用composer更新Laravel项目，但系统说：

Problem 1

- Installation request for netshell/paypal dev-master -> satisfiable by netshell/paypal[dev-master].
- netshell/paypal dev-master requires ext-curl * -> the requested PHP extension curl is missing from your system.

To enable extensions, verify that they are enabled in your .ini files:
- /etc/php/5.6/cli/php.ini
- /etc/php/5.6/cli/conf.d/10-mysqlnd.ini
- /etc/php/5.6/cli/conf.d/10-opcache.ini
- /etc/php/5.6/cli/conf.d/10-pdo.ini
- /etc/php/5.6/cli/conf.d/15-xml.ini
- /etc/php/5.6/cli/conf.d/20-calendar.ini
- /etc/php/5.6/cli/conf.d/20-ctype.ini
- /etc/php/5.6/cli/conf.d/20-dom.ini
- /etc/php/5.6/cli/conf.d/20-exif.ini
- /etc/php/5.6/cli/conf.d/20-fileinfo.ini
- /etc/php/5.6/cli/conf.d/20-ftp.ini
- /etc/php/5.6/cli/conf.d/20-gettext.ini
- /etc/php/5.6/cli/conf.d/20-iconv.ini
- /etc/php/5.6/cli/conf.d/20-json.ini
- /etc/php/5.6/cli/conf.d/20-mbstring.ini
- /etc/php/5.6/cli/conf.d/20-mcrypt.ini
- /etc/php/5.6/cli/conf.d/20-mysql.ini
- /etc/php/5.6/cli/conf.d/20-mysqli.ini
- /etc/php/5.6/cli/conf.d/20-pdo_mysql.ini
- /etc/php/5.6/cli/conf.d/20-phar.ini
- /etc/php/5.6/cli/conf.d/20-posix.ini
- /etc/php/5.6/cli/conf.d/20-readline.ini
- /etc/php/5.6/cli/conf.d/20-shmop.ini
- /etc/php/5.6/cli/conf.d/20-simplexml.ini
- /etc/php/5.6/cli/conf.d/20-sockets.ini
- /etc/php/5.6/cli/conf.d/20-sysvmsg.ini
- /etc/php/5.6/cli/conf.d/20-sysvsem.ini
- /etc/php/5.6/cli/conf.d/20-sysvshm.ini
- /etc/php/5.6/cli/conf.d/20-tokenizer.ini
- /etc/php/5.6/cli/conf.d/20-wddx.ini
- /etc/php/5.6/cli/conf.d/20-xmlreader.ini
- /etc/php/5.6/cli/conf.d/20-xmlwriter.ini
- /etc/php/5.6/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.

该机器是：Ubuntu 14.04 Nginx PHP 5.6

我已经做了很多步骤，比如：

• apt-get install curl

• apt-get install php-curl

• service php5-fpm restart

• service nginx restart

仍然没有工作......

我还有curl.ini文件：

; configuration for php CURL module
; priority=20
extension=curl.so

我的phpinfo说curl已启用：

我还能做些什么？