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diff --git a/vendor/zendframework/zend-diactoros/src/functions/marshal_uri_from_sapi.php b/vendor/zendframework/zend-diactoros/src/functions/marshal_uri_from_sapi.php
new file mode 100644
index 000000000..decaafb83
--- /dev/null
+++ b/vendor/zendframework/zend-diactoros/src/functions/marshal_uri_from_sapi.php
@@ -0,0 +1,212 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-diactoros for the canonical source repository
+ * @copyright Copyright (c) 2018 Zend Technologies USA Inc. (https://www.zend.com)
+ * @license   https://github.com/zendframework/zend-diactoros/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Diactoros;
+
+use function array_change_key_case;
+use function array_key_exists;
+use function explode;
+use function implode;
+use function is_array;
+use function ltrim;
+use function preg_match;
+use function preg_replace;
+use function strlen;
+use function strpos;
+use function strtolower;
+use function substr;
+
+/**
+ * Marshal a Uri instance based on the values presnt in the $_SERVER array and headers.
+ *
+ * @param array $server SAPI parameters
+ * @param array $headers HTTP request headers
+ * @return Uri
+ */
+function marshalUriFromSapi(array $server, array $headers)
+{
+    /**
+     * Retrieve a header value from an array of headers using a case-insensitive lookup.
+     *
+     * @param string $name
+     * @param array $headers Key/value header pairs
+     * @param mixed $default Default value to return if header not found
+     * @return mixed
+     */
+    $getHeaderFromArray = function ($name, array $headers, $default = null) {
+        $header  = strtolower($name);
+        $headers = array_change_key_case($headers, CASE_LOWER);
+        if (array_key_exists($header, $headers)) {
+            $value = is_array($headers[$header]) ? implode(', ', $headers[$header]) : $headers[$header];
+            return $value;
+        }
+
+        return $default;
+    };
+
+    /**
+     * Marshal the host and port from HTTP headers and/or the PHP environment.
+     *
+     * @param array $headers
+     * @param array $server
+     * @return array Array of two items, host and port, in that order (can be
+     *     passed to a list() operation).
+     */
+    $marshalHostAndPort = function (array $headers, array $server) use ($getHeaderFromArray) {
+        /**
+        * @param string|array $host
+        * @return array Array of two items, host and port, in that order (can be
+        *     passed to a list() operation).
+        */
+        $marshalHostAndPortFromHeader = function ($host) {
+            if (is_array($host)) {
+                $host = implode(', ', $host);
+            }
+
+            $port = null;
+
+            // works for regname, IPv4 & IPv6
+            if (preg_match('|\:(\d+)$|', $host, $matches)) {
+                $host = substr($host, 0, -1 * (strlen($matches[1]) + 1));
+                $port = (int) $matches[1];
+            }
+
+            return [$host, $port];
+        };
+
+        /**
+        * @param array $server
+        * @param string $host
+        * @param null|int $port
+        * @return array Array of two items, host and port, in that order (can be
+        *     passed to a list() operation).
+        */
+        $marshalIpv6HostAndPort = function (array $server, $host, $port) {
+            $host = '[' . $server['SERVER_ADDR'] . ']';
+            $port = $port ?: 80;
+            if ($port . ']' === substr($host, strrpos($host, ':') + 1)) {
+                // The last digit of the IPv6-Address has been taken as port
+                // Unset the port so the default port can be used
+                $port = null;
+            }
+            return [$host, $port];
+        };
+
+        static $defaults = ['', null];
+
+        if ($getHeaderFromArray('host', $headers, false)) {
+            return $marshalHostAndPortFromHeader($getHeaderFromArray('host', $headers));
+        }
+
+        if (! isset($server['SERVER_NAME'])) {
+            return $defaults;
+        }
+
+        $host = $server['SERVER_NAME'];
+        $port = isset($server['SERVER_PORT']) ? (int) $server['SERVER_PORT'] : null;
+
+        if (! isset($server['SERVER_ADDR'])
+            || ! preg_match('/^\[[0-9a-fA-F\:]+\]$/', $host)
+        ) {
+            return [$host, $port];
+        }
+
+        // Misinterpreted IPv6-Address
+        // Reported for Safari on Windows
+        return $marshalIpv6HostAndPort($server, $host, $port);
+    };
+
+    /**
+     * Detect the path for the request
+     *
+     * Looks at a variety of criteria in order to attempt to autodetect the base
+     * request path, including:
+     *
+     * - IIS7 UrlRewrite environment
+     * - REQUEST_URI
+     * - ORIG_PATH_INFO
+     *
+     * From ZF2's Zend\Http\PhpEnvironment\Request class
+     * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+     * @license   http://framework.zend.com/license/new-bsd New BSD License
+     *
+     * @param array $server SAPI environment array (typically `$_SERVER`)
+     * @return string Discovered path
+     */
+    $marshalRequestPath = function (array $server) {
+        // IIS7 with URL Rewrite: make sure we get the unencoded url
+        // (double slash problem).
+        $iisUrlRewritten = array_key_exists('IIS_WasUrlRewritten', $server) ? $server['IIS_WasUrlRewritten'] : null;
+        $unencodedUrl    = array_key_exists('UNENCODED_URL', $server) ? $server['UNENCODED_URL'] : '';
+        if ('1' === $iisUrlRewritten && ! empty($unencodedUrl)) {
+            return $unencodedUrl;
+        }
+
+        $requestUri = array_key_exists('REQUEST_URI', $server) ? $server['REQUEST_URI'] : null;
+
+        if ($requestUri !== null) {
+            return preg_replace('#^[^/:]+://[^/]+#', '', $requestUri);
+        }
+
+        $origPathInfo = array_key_exists('ORIG_PATH_INFO', $server) ? $server['ORIG_PATH_INFO'] : null;
+        if (empty($origPathInfo)) {
+            return '/';
+        }
+
+        return $origPathInfo;
+    };
+
+    $uri = new Uri('');
+
+    // URI scheme
+    $scheme = 'http';
+    if (array_key_exists('HTTPS', $server)) {
+        $https = $server['HTTPS'];
+    } elseif (array_key_exists('https', $server)) {
+        $https = $server['https'];
+    } else {
+        $https = false;
+    }
+    if (($https && 'off' !== strtolower($https))
+        || strtolower($getHeaderFromArray('x-forwarded-proto', $headers, false)) === 'https'
+    ) {
+        $scheme = 'https';
+    }
+    $uri = $uri->withScheme($scheme);
+
+    // Set the host
+    list($host, $port) = $marshalHostAndPort($headers, $server);
+    if (! empty($host)) {
+        $uri = $uri->withHost($host);
+        if (! empty($port)) {
+            $uri = $uri->withPort($port);
+        }
+    }
+
+    // URI path
+    $path = $marshalRequestPath($server);
+
+    // Strip query string
+    $path = explode('?', $path, 2)[0];
+
+    // URI query
+    $query = '';
+    if (isset($server['QUERY_STRING'])) {
+        $query = ltrim($server['QUERY_STRING'], '?');
+    }
+
+    // URI fragment
+    $fragment = '';
+    if (strpos($path, '#') !== false) {
+        list($path, $fragment) = explode('#', $path, 2);
+    }
+
+    return $uri
+        ->withPath($path)
+        ->withFragment($fragment)
+        ->withQuery($query);
+}