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CURL Extension Emulation Library
Version 1.0.4
Copyright 2004-2007, Steve Blinch
http://code.blitzaffe.com
============================================================================

DESCRIPTION

Provides a pure-PHP implementation of the PHP CURL extension, for use on
systems which do not already have the CURL extension installed.  It emulates
all of the curl_* functions normally provided by the CURL extension itself.

This will automatically detect and use the best CURL implementation available
on your server.  It will attempt the following, in order:

1) Check for the existence of the "real" CURL PHP Extension.  If it is
loaded, the library will do nothing (and it will not interfere with the
"real" extension).
2) Check for the existence of the CURL console binary (usually located in
/usr/bin/curl).  If found, the library will emulate the CURL PHP
extension (including all curl_* functions) and use the console binary
to execute all requests.
3) If neither the "real" CURL PHP Extension nor the CURL console binary
are available, the library will emulate the CURL PHP extension (including
all curl_* functions) using a native, pure-PHP HTTP client implementation.
This implementation is somewhat limited, but it provides support for most
of the common CURL options.  HTTPS (SSL) support is available in this
mode under PHP 4.3.0 if the OpenSSL Extension is loaded.

Thus, by including this library in your project, you can rely on having some
level of CURL support regardless of the configuration of the server on which
it is being used.


HISTORY

1.0.4 (not released)
- Fixed HTTPRetriever double-inclusion bug.


USAGE

Simply copy all of the libcurlemu files into your project directory, then:

require_once("libcurlemu.inc.php");

After this, you can use all of the curl_* functions documented in the PHP
Manual.


EXAMPLE

// CURL Extension Emulation Library Example
//
// Usage should be straightforward; you simply use this script exactly as you
// would normally use the PHP CURL extension functions.

// first, include libcurlemu.inc.php
require_once('libcurlemu.inc.php');

// at this point, libcurlemu has detected the best available CURL solution
// (either the CURL extension, if available, or the CURL commandline binary,
// if available, or as a last resort, HTTPRetriever, our native-PHP HTTP
// client implementation) and has implemented the curl_* functions if
// necessary, so you can use CURL normally and safely assume that all CURL
// functions are available.

// the rest of this example code is copied straight from the PHP manual's
// reference for the curl_init() function, and will work fine with libcurlemu

// create a new CURL resource
$ch = curl_init();

// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, false);

// grab URL and pass it to the browser
curl_exec($ch);

// close CURL resource, and free up system resources
curl_close($ch);


LICENSE

This script is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This script is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
details.

You should have received a copy of the GNU General Public License along
with this script; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA  02111-1307  USA