diff --git a/library/think/Request.php b/library/think/Request.php
index 077e190d..6d49aa09 100644
--- a/library/think/Request.php
+++ b/library/think/Request.php
@@ -910,18 +910,22 @@ class Request
     {
         if (empty($this->header)) {
             $header = [];
-            $server = $this->server ?: $_SERVER;
-            foreach ($server as $key => $val) {
-                if (0 === strpos($key, 'HTTP_')) {
-                    $key          = str_replace('_', '-', strtolower(substr($key, 5)));
-                    $header[$key] = $val;
+            if (function_exists('apache_request_headers') && $result = apache_request_headers()) {
+                $header = $result;
+            } else {
+                $server = $this->server ?: $_SERVER;
+                foreach ($server as $key => $val) {
+                    if (0 === strpos($key, 'HTTP_')) {
+                        $key          = str_replace('_', '-', strtolower(substr($key, 5)));
+                        $header[$key] = $val;
+                    }
+                }
+                if (isset($server['CONTENT_TYPE'])) {
+                    $header['content-type'] = $server['CONTENT_TYPE'];
+                }
+                if (isset($server['CONTENT_LENGTH'])) {
+                    $header['content-length'] = $server['CONTENT_LENGTH'];
                 }
-            }
-            if (isset($server['CONTENT_TYPE'])) {
-                $header['content-type'] = $server['CONTENT_TYPE'];
-            }
-            if (isset($server['CONTENT_LENGTH'])) {
-                $header['content-length'] = $server['CONTENT_LENGTH'];
             }
             $this->header = array_change_key_case($header);
         }