diff --git a/recaptcha-php/README.md b/recaptcha-php/README.md
index fac73b8622747c1878744704c0aec27ed133074c..6e81a8edafbc891e3fdb2c37a967b417be920bb6 100644
--- a/recaptcha-php/README.md
+++ b/recaptcha-php/README.md
@@ -6,7 +6,7 @@
 
 * Project page: http://www.google.com/recaptcha/
 * Repository: https://github.com/google/recaptcha
-* Version: 1.1.0
+* Version: 1.1.2
 * License: BSD, see [LICENSE](LICENSE)
 
 ## Description
@@ -17,15 +17,60 @@ with reCAPTCHA.
 
 ## Installation
 
-Use [Composer](https://getcomposer.org/) to install the library. Either use
-`composer require google/recaptcha "~1.1"` or add the following to your
-`composer.json`:
+### Composer (Recommended)
+
+[Composer](https://getcomposer.org/) is a widely used dependency manager for PHP
+packages. This reCAPTCHA client is available on Packagist as
+[`google/recaptcha`](https://packagist.org/packages/google/recaptcha) and can be
+installed either by running the `composer require` command or adding the library
+to your `composer.json`. To enable Composer for you project, refer to the
+project's [Getting Started](https://getcomposer.org/doc/00-intro.md)
+documentation.
+
+To add this dependency using the command, run the following from within your
+project directory:
+```
+composer require google/recaptcha "~1.1"
+```
+
+Alternatively, add the dependency directly to your `composer.json` file:
 ```json
-    "require": {
-        "google/recaptcha": "~1.1"
-    }
+"require": {
+    "google/recaptcha": "~1.1"
+}
+```
+
+### Direct download (no Composer)
+
+If you wish to install the library manually (i.e. without Composer), then you
+can use the links on the main project page to either clone the repo or download
+the [ZIP file](https://github.com/google/recaptcha/archive/master.zip). For
+convenience, an autoloader script is provided in `src/autoload.php` which you
+can require into your script instead of Composer's `vendor/autoload.php`. For
+example:
+
+```php
+require('/path/to/recaptcha/src/autoload.php');
+$recaptcha = new \ReCaptcha\ReCaptcha($secret);
 ```
 
+The classes in the project are structured according to the
+[PSR-4](http://www.php-fig.org/psr/psr-4/) standard, so you may of course also
+use your own autoloader or require the needed files directly in your code.
+
+### Development install
+
+If you would like to contribute to this project or run the unit tests on within
+your own environment you will need to install the development dependencies, in
+this case that means [PHPUnit](https://phpunit.de/). If you clone the repo and
+run `composer install` from within the repo, this will also grab PHPUnit and all
+its dependencies for you. If you only need the autoloader installed, then you
+can always specify to Composer not to run in development mode, e.g. `composer
+install --no-dev`.
+
+*Note:* These dependencies are only required for development, there's no
+requirement for them to be included in your production code.
+
 ## Usage
 
 First, register keys for your site at https://www.google.com/recaptcha/admin
@@ -43,21 +88,23 @@ if ($resp->isSuccess()) {
 }
 ```
 
-You can see an end-to-end working example in [examples/example-captcha.php](examples/example-captcha.php)
+You can see an end-to-end working example in
+[examples/example-captcha.php](examples/example-captcha.php)
 
 ## Upgrading
 
 ### From 1.0.0
 
-The previous version of this client is still available on the `1.0.0` tag
-[in this repo](https://github.com/google/recaptcha/tree/1.0.0) but it is purely
-for reference and will not receive any updates.
+The previous version of this client is still available on the `1.0.0` tag [in
+this repo](https://github.com/google/recaptcha/tree/1.0.0) but it is purely for
+reference and will not receive any updates.
 
 The major changes in 1.1.0 are:
- * installation now via Composer;
- * class loading also via Composer;
- * classes now namespaced;
- * old method call was `$rc->verifyResponse($remoteIp, $response)`, new call is `$rc->verify($response, $remoteIp)`
+* installation now via Composer;
+* class loading also via Composer;
+* classes now namespaced;
+* old method call was `$rc->verifyResponse($remoteIp, $response)`, new call is
+  `$rc->verify($response, $remoteIp)`
 
 ## Contributing
 
diff --git a/recaptcha-php/examples/example-captcha.php b/recaptcha-php/examples/example-captcha.php
index e76723938a745252aa809bc2d7c7057ed7e1567e..8875171b8b6aa5215040dd530c2dbd3600b1886a 100644
--- a/recaptcha-php/examples/example-captcha.php
+++ b/recaptcha-php/examples/example-captcha.php
@@ -30,7 +30,9 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-// Initiate the autoloader.
+// Initiate the autoloader. The file should be generated by Composer.
+// You will provide your own autoloader or require the files directly if you did
+// not install via Composer.
 require_once __DIR__ . '/../vendor/autoload.php';
 
 // Register API keys at https://www.google.com/recaptcha/admin
@@ -98,7 +100,7 @@ elseif (isset($_POST['g-recaptcha-response'])):
         <h2>Something went wrong</h2>
         <p>The following error was returned: <?php
             foreach ($resp->getErrorCodes() as $code) {
-                echo '<tt>' . $code . '</tt> ';
+                echo '<tt>' , $code , '</tt> ';
             }
             ?></p>
         <p>Check the error code reference at <tt><a href="https://developers.google.com/recaptcha/docs/verify#error-code-reference">https://developers.google.com/recaptcha/docs/verify#error-code-reference</a></tt>.
diff --git a/recaptcha-php/phpunit.xml.dist b/recaptcha-php/phpunit.xml.dist
index c4a8896142d0e52d46b98f0becfc15eefcd5b8af..437667880aefff4702d82bb20956fe5e866b4733 100644
--- a/recaptcha-php/phpunit.xml.dist
+++ b/recaptcha-php/phpunit.xml.dist
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.4/phpunit.xsd" 
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.4/phpunit.xsd"
          colors="true"
-         verbose="true">
+         verbose="true"
+         bootstrap="src/autoload.php">
     <testsuites>
         <testsuite name="reCAPTCHA Test Suite">
             <directory>tests/ReCaptcha/</directory>
diff --git a/recaptcha-php/src/ReCaptcha/ReCaptcha.php b/recaptcha-php/src/ReCaptcha/ReCaptcha.php
index 414c52159d44d66c43fb5b030c21860ded920cfe..e2f7c347ebfc4e2da61480e1a1e31301847d165d 100644
--- a/recaptcha-php/src/ReCaptcha/ReCaptcha.php
+++ b/recaptcha-php/src/ReCaptcha/ReCaptcha.php
@@ -35,7 +35,7 @@ class ReCaptcha
      * Version of this client library.
      * @const string
      */
-    const VERSION = 'php_1.1.0';
+    const VERSION = 'php_1.1.2';
 
     /**
      * Shared secret for the site.
diff --git a/recaptcha-php/src/ReCaptcha/RequestMethod/Curl.php b/recaptcha-php/src/ReCaptcha/RequestMethod/Curl.php
new file mode 100644
index 0000000000000000000000000000000000000000..20ee53099c7a7cc1a5ca9446b40b50117766faa0
--- /dev/null
+++ b/recaptcha-php/src/ReCaptcha/RequestMethod/Curl.php
@@ -0,0 +1,74 @@
+<?php
+/**
+ * This is a PHP library that handles calling reCAPTCHA.
+ *
+ * @copyright Copyright (c) 2015, Google Inc.
+ * @link      http://www.google.com/recaptcha
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+namespace ReCaptcha\RequestMethod;
+
+/**
+ * Convenience wrapper around the cURL functions to allow mocking.
+ */
+class Curl
+{
+
+    /**
+     * @see http://php.net/curl_init
+     * @param string $url
+     * @return resource cURL handle
+     */
+    public function init($url = null)
+    {
+        return curl_init($url);
+    }
+
+    /**
+     * @see http://php.net/curl_setopt_array
+     * @param resource $ch
+     * @param array $options
+     * @return bool
+     */
+    public function setoptArray($ch, array $options)
+    {
+        return curl_setopt_array($ch, $options);
+    }
+
+    /**
+     * @see http://php.net/curl_exec
+     * @param resource $ch
+     * @return mixed
+     */
+    public function exec($ch)
+    {
+        return curl_exec($ch);
+    }
+
+    /**
+     * @see http://php.net/curl_close
+     * @param resource $ch
+     */
+    public function close($ch)
+    {
+        curl_close($ch);
+    }
+}
diff --git a/recaptcha-php/src/ReCaptcha/RequestMethod/CurlPost.php b/recaptcha-php/src/ReCaptcha/RequestMethod/CurlPost.php
new file mode 100644
index 0000000000000000000000000000000000000000..e06d1cc8fe5bad611392f0d0c04f5fda3ec7eee8
--- /dev/null
+++ b/recaptcha-php/src/ReCaptcha/RequestMethod/CurlPost.php
@@ -0,0 +1,88 @@
+<?php
+/**
+ * This is a PHP library that handles calling reCAPTCHA.
+ *
+ * @copyright Copyright (c) 2015, Google Inc.
+ * @link      http://www.google.com/recaptcha
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+namespace ReCaptcha\RequestMethod;
+
+use ReCaptcha\RequestMethod;
+use ReCaptcha\RequestParameters;
+
+/**
+ * Sends cURL request to the reCAPTCHA service.
+ * Note: this requires the cURL extension to be enabled in PHP
+ * @see http://php.net/manual/en/book.curl.php
+ */
+class CurlPost implements RequestMethod
+{
+    /**
+     * URL to which requests are sent via cURL.
+     * @const string
+     */
+    const SITE_VERIFY_URL = 'https://www.google.com/recaptcha/api/siteverify';
+
+    /**
+     * Curl connection to the reCAPTCHA service
+     * @var Curl
+     */
+    private $curl;
+
+    public function __construct(Curl $curl = null)
+    {
+        if (!is_null($curl)) {
+            $this->curl = $curl;
+        } else {
+            $this->curl = new Curl();
+        }
+    }
+
+    /**
+     * Submit the cURL request with the specified parameters.
+     *
+     * @param RequestParameters $params Request parameters
+     * @return string Body of the reCAPTCHA response
+     */
+    public function submit(RequestParameters $params)
+    {
+        $handle = $this->curl->init(self::SITE_VERIFY_URL);
+
+        $options = array(
+            CURLOPT_POST => true,
+            CURLOPT_POSTFIELDS => $params->toQueryString(),
+            CURLOPT_HTTPHEADER => array(
+                'Content-Type: application/x-www-form-urlencoded'
+            ),
+            CURLINFO_HEADER_OUT => false,
+            CURLOPT_HEADER => false,
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_SSL_VERIFYPEER => true
+        );
+        $this->curl->setoptArray($handle, $options);
+
+        $response = $this->curl->exec($handle);
+        $this->curl->close($handle);
+
+        return $response;
+    }
+}
diff --git a/recaptcha-php/src/ReCaptcha/RequestMethod/Socket.php b/recaptcha-php/src/ReCaptcha/RequestMethod/Socket.php
index e74fc49d62331edcc4291eae0ef8f2fc78c359b4..d3c87922d224e4b88cc0d542f09eb7c98bbe2949 100644
--- a/recaptcha-php/src/ReCaptcha/RequestMethod/Socket.php
+++ b/recaptcha-php/src/ReCaptcha/RequestMethod/Socket.php
@@ -74,6 +74,7 @@ class Socket
      * 
      * @see http://php.net/fgets
      * @param int $length
+     * @return string
      */
     public function fgets($length = null)
     {
diff --git a/recaptcha-php/src/ReCaptcha/RequestMethod/SocketPost.php b/recaptcha-php/src/ReCaptcha/RequestMethod/SocketPost.php
index 4f0c61a3fdea622e204dcd6153b0c4dec0b6671c..47541215f046f893d824a494ce972ab9af5c3567 100644
--- a/recaptcha-php/src/ReCaptcha/RequestMethod/SocketPost.php
+++ b/recaptcha-php/src/ReCaptcha/RequestMethod/SocketPost.php
@@ -30,15 +30,15 @@ use ReCaptcha\RequestMethod;
 use ReCaptcha\RequestParameters;
 
 /**
- * Sends a POST request to the reCAPTCHA service, but makes use of fsockopen() 
- * instead of get_file_contents(). This is to account for people who may be on 
+ * Sends a POST request to the reCAPTCHA service, but makes use of fsockopen()
+ * instead of get_file_contents(). This is to account for people who may be on
  * servers where allow_furl_open is disabled.
  */
 class SocketPost implements RequestMethod
 {
     /**
      * reCAPTCHA service host.
-     * @const string 
+     * @const string
      */
     const RECAPTCHA_HOST = 'www.google.com';
 
@@ -65,7 +65,7 @@ class SocketPost implements RequestMethod
 
     /**
      * Constructor
-     * 
+     *
      * @param \ReCaptcha\RequestMethod\Socket $socket optional socket, injectable for testing
      */
     public function __construct(Socket $socket = null)
@@ -88,33 +88,34 @@ class SocketPost implements RequestMethod
         $errno = 0;
         $errstr = '';
 
-        if ($this->socket->fsockopen('ssl://' . self::RECAPTCHA_HOST, 443, $errno, $errstr, 30) !== false) {
-            $content = $params->toQueryString();
+        if (false === $this->socket->fsockopen('ssl://' . self::RECAPTCHA_HOST, 443, $errno, $errstr, 30)) {
+            return self::BAD_REQUEST;
+        }
 
-            $request = "POST " . self::SITE_VERIFY_PATH . " HTTP/1.1\r\n";
-            $request .= "Host: " . self::RECAPTCHA_HOST . "\r\n";
-            $request .= "Content-Type: application/x-www-form-urlencoded\r\n";
-            $request .= "Content-length: " . strlen($content) . "\r\n";
-            $request .= "Connection: close\r\n\r\n";
-            $request .= $content . "\r\n\r\n";
+        $content = $params->toQueryString();
 
-            $this->socket->fwrite($request);
-            $response = '';
+        $request = "POST " . self::SITE_VERIFY_PATH . " HTTP/1.1\r\n";
+        $request .= "Host: " . self::RECAPTCHA_HOST . "\r\n";
+        $request .= "Content-Type: application/x-www-form-urlencoded\r\n";
+        $request .= "Content-length: " . strlen($content) . "\r\n";
+        $request .= "Connection: close\r\n\r\n";
+        $request .= $content . "\r\n\r\n";
 
-            while (!$this->socket->feof()) {
-                $response .= $this->socket->fgets(4096);
-            }
+        $this->socket->fwrite($request);
+        $response = '';
 
-            $this->socket->fclose();
+        while (!$this->socket->feof()) {
+            $response .= $this->socket->fgets(4096);
+        }
 
-            if (0 === strpos($response, 'HTTP/1.1 200 OK')) {
-                $parts = preg_split("#\n\s*\n#Uis", $response);
-                return $parts[1];
-            }
+        $this->socket->fclose();
 
+        if (0 !== strpos($response, 'HTTP/1.1 200 OK')) {
             return self::BAD_RESPONSE;
         }
 
-        return self::BAD_REQUEST;
+        $parts = preg_split("#\n\s*\n#Uis", $response);
+
+        return $parts[1];
     }
 }
diff --git a/recaptcha-php/src/ReCaptcha/RequestParameters.php b/recaptcha-php/src/ReCaptcha/RequestParameters.php
index f446842839dcadb6b65e54cccdf256aca7cab008..cb66f26cf4b6c76edc3707549c9c4f24ad08a295 100644
--- a/recaptcha-php/src/ReCaptcha/RequestParameters.php
+++ b/recaptcha-php/src/ReCaptcha/RequestParameters.php
@@ -98,6 +98,6 @@ class RequestParameters
      */
     public function toQueryString()
     {
-        return http_build_query($this->toArray());
+        return http_build_query($this->toArray(), '', '&');
     }
 }
diff --git a/recaptcha-php/src/autoload.php b/recaptcha-php/src/autoload.php
new file mode 100644
index 0000000000000000000000000000000000000000..a53cbd78bf25c41ac1776f775e4e39d5be278b2f
--- /dev/null
+++ b/recaptcha-php/src/autoload.php
@@ -0,0 +1,38 @@
+<?php
+
+/* An autoloader for ReCaptcha\Foo classes. This should be require()d
+ * by the user before attempting to instantiate any of the ReCaptcha
+ * classes.
+ */
+
+spl_autoload_register(function ($class) {
+    if (substr($class, 0, 10) !== 'ReCaptcha\\') {
+      /* If the class does not lie under the "ReCaptcha" namespace,
+       * then we can exit immediately.
+       */
+      return;
+    }
+
+    /* All of the classes have names like "ReCaptcha\Foo", so we need
+     * to replace the backslashes with frontslashes if we want the
+     * name to map directly to a location in the filesystem.
+     */
+    $class = str_replace('\\', '/', $class);
+
+    /* First, check under the current directory. It is important that
+     * we look here first, so that we don't waste time searching for
+     * test classes in the common case.
+     */
+    $path = dirname(__FILE__).'/'.$class.'.php';
+    if (is_readable($path)) {
+        require_once $path;
+    }
+
+    /* If we didn't find what we're looking for already, maybe it's
+     * a test class?
+     */
+    $path = dirname(__FILE__).'/../tests/'.$class.'.php';
+    if (is_readable($path)) {
+        require_once $path;
+    }
+});
diff --git a/recaptcha-php/tests/ReCaptcha/RequestMethod/CurlPostTest.php b/recaptcha-php/tests/ReCaptcha/RequestMethod/CurlPostTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..892e207cb2c053adba252ad6d2aa48002ef2022e
--- /dev/null
+++ b/recaptcha-php/tests/ReCaptcha/RequestMethod/CurlPostTest.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * This is a PHP library that handles calling reCAPTCHA.
+ *
+ * @copyright Copyright (c) 2015, Google Inc.
+ * @link      http://www.google.com/recaptcha
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+namespace ReCaptcha\RequestMethod;
+
+use \ReCaptcha\RequestParameters;
+
+class CurlPostTest extends \PHPUnit_Framework_TestCase
+{
+
+    protected function setUp()
+    {
+        if (!extension_loaded('curl')) {
+            $this->markTestSkipped(
+                    'The cURL extension is not available.'
+            );
+        }
+    }
+
+    public function testSubmit()
+    {
+        $curl = $this->getMock('\\ReCaptcha\\RequestMethod\\Curl',
+                array('init', 'setoptArray', 'exec', 'close'));
+        $curl->expects($this->once())
+                ->method('init')
+                ->willReturn(new \stdClass);
+        $curl->expects($this->once())
+                ->method('setoptArray')
+                ->willReturn(true);
+        $curl->expects($this->once())
+                ->method('exec')
+                ->willReturn('RESPONSEBODY');
+        $curl->expects($this->once())
+                ->method('close');
+
+        $pc = new CurlPost($curl);
+        $response = $pc->submit(new RequestParameters("secret", "response"));
+        $this->assertEquals('RESPONSEBODY', $response);
+    }
+}