Symfony:无法找到套接字传输“http"

I'm trying to learn Symfony. So I've downloaded the installer from symfony.com.

My http_proxy / https_proxy are defined, and my DNS too. Unless, the command sudo curl -LsS https://symfony.com/installer -o /usr/local/bin/symfony used to download the installer could not work.

Now, I want to create a new project, so in my project folder I type symfony new project. Same thing if I specify symfony new project 2.8 or symfony new project 3.0.

The result is an error message :

 Downloading Symfony...

  [GuzzleHttpExceptionRequestException]
  Error creating resource: [message] fopen(http://symfony.com/download?v=Symfony_Standard_Vendors_latest.tgz): failed to open stream: Unable to find the socket transport "http" -
   did you forget to enable it when you configured PHP?
  [file] phar:///usr/local/bin/symfony/vendor/guzzlehttp/ringphp/src/Client/StreamHandler.php
  [line] 406
  [message] Undefined variable: http_response_header
  [file] phar:///usr/local/bin/symfony/vendor/guzzlehttp/ringphp/src/Client/StreamHandler.php
  [line] 407

  [GuzzleHttpRingExceptionRingException]
  Error creating resource: [message] fopen(http://symfony.com/download?v=Symfony_Standard_Vendors_latest.tgz): failed to open stream: Unable to find the socket transport "http" -
   did you forget to enable it when you configured PHP?
  [file] phar:///usr/local/bin/symfony/vendor/guzzlehttp/ringphp/src/Client/StreamHandler.php
  [line] 406
  [message] Undefined variable: http_response_header
  [file] phar:///usr/local/bin/symfony/vendor/guzzlehttp/ringphp/src/Client/StreamHandler.php
  [line] 407

new <directory> [<version>]

If I do a phpinfo(), I've openssl :

openssl
OpenSSL support     enabled
OpenSSL Library Version     OpenSSL 1.0.1k 8 Jan 2015
OpenSSL Header Version  OpenSSL 1.0.1k 8 Jan 2015
Openssl default config  /usr/lib/ssl/openssl.cnf 

My PHP version if I do a php -v :

PHP 5.6.17-0+deb8u1 (cli) (built: Jan 13 2016 09:10:12)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
    with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies

My question : Why is there an error when I try to create a new project and how to fix it ? Is it due to PHP version ? Do I need a linux package or an other PHP extension ? Is there anything else to configure somewhere ?

解决方案

Arf -_-'

Ok, I've been blocked half a day yesterday on this point. That'why I decided to ask on StackOverflow... And Finally I just found the answer ...

git-hub Symfony-installer issues

I had to install php5-curl.

apt-get install php5-curl

Hope it could at least help someone in the future.