adding reply links

threadr/board/board.php

@@ -20,11 +20,16 @@ foreach($statement->fetchAll() as $ROW) {
   $newlines = array("\r\n", "\n\r", "\r", "\n"); // two-character newlines first to prevent placing two line breaks instead of one
   $post_content = str_replace($newlines, "<br />", $post_content);
 
-  // post id of the original post this is a reply to, negative numbers mean no reply
+  // if this is a reply, build reference
   $reply_to = $ROW['reply_to'];
+  if ($reply_to > -1) {
+    $reply_reference = "<p class=\"post_reply\" >This is a reply to <a href=./?id=$_GET['id']#$reply_to >this</a> message.</p>"
+  } else {
+    $reply_reference = ""
+  }
 
   echo "<section id=\"$post_id\" >
-<h1>$post_title</h1>
+<h1 class=\"post\">$post_title</h1>
 <article>
 <header>
 <div>

threadr/style.css

@@ -388,3 +388,10 @@ header {
   padding:                40px 40px 10px 40px;
   box-shadow:             0px 4px 8px 0px rgba(0,0,0,0.2);
 }
+
+h1.post{
+  margin:                 0;
+}
+p.post_reply {
+  margin:                 0.1em;
+}