<commit_before>========
Overview
========

Requirements
============

#. PHP 5.5.0
#. To use the PHP stream handler, ``allow_url_fopen`` must be enabled in your
   system's php.ini.
#. To use the cURL handler, you must have a recent version of cURL >= 7.19.4
   compiled with OpenSSL and zlib.

.. note::

    Guzzle no longer requires cURL in order to send HTTP requests. Guzzle will
    use the PHP stream wrapper to send HTTP requests if cURL is not installed.
    Alternatively, you can provide your own HTTP handler used to send requests.

.. _installation:


Installation
============
<commit_msg>Added a note to Overview to mention cURL<commit_after>========
Overview
========

Requirements
============

#. PHP 5.5.0
#. To use the PHP stream handler, ``allow_url_fopen`` must be enabled in your
   system's php.ini.
#. To use the cURL handler, you must have a recent version of cURL >= 7.19.4
   compiled with OpenSSL and zlib.

.. note::

    Guzzle no longer requires cURL in order to send HTTP requests. Guzzle will
    use the PHP stream wrapper to send HTTP requests if cURL is not installed.
    Alternatively, you can provide your own HTTP handler used to send requests.
    
    
.. note::

    Although Guzzle does not require cURL in order to work properly, but without
    cURL, concurrent requests are sent sequentially. In order to get truely 
    concurrent requests, install cURL extension for you PHP installation.


.. _installation:


Installation
============

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