refactor: replace deprecated getHeaders() with headers()

Author: kenjis

app/Views/errors/html/error_exception.php

@@ -270,7 +270,7 @@
 
                 <?php endif; ?>
 
-                <?php $headers = $request->getHeaders(); ?>
+                <?php $headers = $request->headers(); ?>
                 <?php if (! empty($headers)) : ?>
 
                     <h3>Headers</h3>
@@ -318,7 +318,7 @@
                     </tr>
                 </table>
 
-                <?php $headers = $response->getHeaders(); ?>
+                <?php $headers = $response->headers(); ?>
                 <?php if (! empty($headers)) : ?>
                     <?php natsort($headers) ?>
 

system/HTTP/ResponseTrait.php

@@ -471,7 +471,7 @@ public function sendHeaders()
         header(sprintf('HTTP/%s %s %s', $this->getProtocolVersion(), $this->getStatusCode(), $this->getReasonPhrase()), true, $this->getStatusCode());
 
         // Send all of our headers
-        foreach (array_keys($this->getHeaders()) as $name) {
+        foreach (array_keys($this->headers()) as $name) {
             header($name . ': ' . $this->getHeaderLine($name), false, $this->getStatusCode());
         }
 

user_guide_src/source/libraries/curlrequest/010.php

@@ -4,6 +4,6 @@
 echo $response->getHeaderLine('Content-Type');
 
 // Get all headers
-foreach ($response->getHeaders() as $name => $value) {
+foreach ($response->headers() as $name => $value) {
     echo $name . ': ' . $response->getHeaderLine($name) . "\n";
 }