upload.php: Clarify what Exception $code 500 is

Add comments explaining how the number 500 after Exception means HTTP
status code "500 Internal Server Error". This may not be so obvious to
the reader without consulting the PHP manual.

Compliments commit 4606553f38909b483bc06674f9558ede1a9ff1f6.

Reviewed-by: Eliot Whalan <ewhal@pantsu.cat>

1 files changed, 6 insertions, 3 deletions

diff --git a/static/upload.php b/static/upload.php
index b8fb46a..8b0646c 100644
--- a/static/upload.php
+++ b/static/upload.php
@@ -69,7 +69,8 @@ function generate_name($file)
     do {
         // Iterate until we reach the maximum number of retries
         if ($tries-- === 0) {
-            throw new Exception('Gave up trying to find an unused name', 500);
+            throw new Exception('Gave up trying to find an unused name',
+                500); // HTTP status code "500 Internal Server Error"
         }
 
         $chars = range('a', 'z');
@@ -138,12 +139,14 @@ function upload_file($file)
 
     // Attempt to move it to the static directory
     if (!move_uploaded_file($file->tempfile, $uploadFile)) {
-        throw new Exception('Failed to move file to destination', 500);
+        throw new Exception('Failed to move file to destination',
+            500); // HTTP status code "500 Internal Server Error"
     }
 
     // Need to change permissions for the new file to make it world readable
     if (!chmod($uploadFile, 0644)) {
-        throw new Exception('Failed to change file permissions', 500);
+        throw new Exception('Failed to change file permissions',
+            500); // HTTP status code "500 Internal Server Error"
     }
 
     // Add it to the database