If config.php exists redirect setup.php to login.php, if login doesn't exist redirect index.php to setup.php

index.php

@@ -1,4 +1,9 @@
-<?php include("header.php"); ?>
+<?php
+
+if(file_exists('config.php')){
+    include("header.php");
+
+?>
 	
 	<!-- Breadcrumbs-->
 	<ol class="breadcrumb">
@@ -13,4 +18,11 @@
 	<hr>
 	<p>This is a great starting point for new custom pages.</p>
 
-<?php include("footer.php"); ?>
+<?php
+	include("footer.php");
+
+}else{
+    header("Location: setup.php");
+}
+
+?>

setup.php

@@ -1,5 +1,9 @@
 <?php
 
+if(file_exists('config.php')){
+    header("Location: login.php");
+}else{
+
   include("functions.php"); 
 
   if(isset($_POST['add_database'])){
@@ -450,3 +454,9 @@ if(isset($_POST['add_company_settings'])){
   </body>
 
   </html>
+
+<?php
+
+}
+
+?>