diff --git a/extensions/debug/panels/RequestPanel.php b/extensions/debug/panels/RequestPanel.php
index 74d0f6a6d6..17db55f3c1 100644
--- a/extensions/debug/panels/RequestPanel.php
+++ b/extensions/debug/panels/RequestPanel.php
@@ -36,13 +36,15 @@ class RequestPanel extends Panel
 
 	public function save()
 	{
-		if (function_exists('apache_request_headers')) {
-			$requestHeaders = apache_request_headers();
-		} elseif (function_exists('http_get_request_headers')) {
-			$requestHeaders = http_get_request_headers();
-		} else {
-			$requestHeaders = [];
+		$headers = Yii::$app->getRequest()->getHeaders();
+		foreach ($headers as $name => $value) {
+			if (is_array($value) && count($value) == 1) {
+				$requestHeaders[$name] = current($value);
+			} else {
+				$requestHeaders[$name] = $value;
+			}
 		}
+
 		$responseHeaders = [];
 		foreach (headers_list() as $header) {
 			if (($pos = strpos($header, ':')) !== false) {
diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index b60e949035..8d4939c277 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -93,6 +93,7 @@ Yii Framework 2 Change Log
 - Enh #1839: Added support for getting file extension and basename from uploaded file (anfrantic)
 - Enh: yii\codeception\TestCase now supports loading and using fixtures via Yii fixture framework (qiangxue)
 - Enh: Added support to parse json request data to Request::getRestParams() (cebe)
+- Enh: Added ability to get incoming headers (dizews)
 - Chg #1519: `yii\web\User::loginRequired()` now returns the `Response` object instead of exiting the application (qiangxue)
 - Chg #1586: `QueryBuilder::buildLikeCondition()` will now escape special characters and use percentage characters by default (qiangxue)
 - Chg #1610: `Html::activeCheckboxList()` and `Html::activeRadioList()` will submit an empty string if no checkbox/radio is selected (qiangxue)
diff --git a/framework/web/Request.php b/framework/web/Request.php
index f9563dac2e..f82688b015 100644
--- a/framework/web/Request.php
+++ b/framework/web/Request.php
@@ -151,6 +151,10 @@ class Request extends \yii\base\Request
 
 	private $_cookies;
 
+	/**
+	 * @var array the headers in this collection (indexed by the header names)
+	 */
+	private $_headers;
 
 	/**
 	 * Resolves the current request into a route and the associated parameters.
@@ -169,6 +173,37 @@ class Request extends \yii\base\Request
 		}
 	}
 
+	/**
+	 * Returns the header collection.
+	 * The header collection contains incoming HTTP headers.
+	 * @return HeaderCollection the header collection
+	 */
+	public function getHeaders()
+	{
+		if ($this->_headers === null) {
+			$this->_headers = new HeaderCollection;
+			$headers = [];
+			if (function_exists('getallheaders')) {
+				$headers = getallheaders();
+			} elseif (function_exists('http_get_request_headers')) {
+				$headers = http_get_request_headers();
+			} else {
+				foreach ($_SERVER as $name => $value) {
+					if (substr($name, 0, 5) == 'HTTP_') {
+						$name = str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))));
+						$this->_headers->add($name, $value);
+					}
+				}
+				return $this->_headers;
+			}
+			foreach ($headers as $name => $value) {
+				$this->_headers->add($name, $value);
+			}
+		}
+
+		return $this->_headers;
+	}
+
 	/**
 	 * Returns the method of the current request (e.g. GET, POST, HEAD, PUT, PATCH, DELETE).
 	 * @return string request method, such as GET, POST, HEAD, PUT, PATCH, DELETE.