Use require_once

elements/header.php

@@ -1,5 +1,5 @@
 <?php
-  include "../config/config.php";
+  require_once "../config/config.php";
 
   if (!isset($config["title"]))
     $config["title"] = "Tent";

pages/artist.php

@@ -1,16 +1,16 @@
 <?php
-  include "../utilities/dom.php";
-  require "../modules/querypath/src/qp.php";
+  require_once "../utilities/dom.php";
+  require_once "../modules/querypath/src/qp.php";
 
   $document = htmlqp(encode_document(file_get_contents("https://" . urlencode($_GET["name"]) . ".bandcamp.com/music")));
 
   $title = $document->find("#band-name-location .title")->text();
 ?>
 
-<?php include "../elements/header.php" ?>
-<?php include "../elements/item.php" ?>
-<?php include "../elements/sidebar.php" ?>
-<?php include "../utilities/link.php" ?>
+<?php require_once "../elements/header.php" ?>
+<?php require_once "../elements/item.php" ?>
+<?php require_once "../elements/sidebar.php" ?>
+<?php require_once "../utilities/link.php" ?>
 
 <?php
   if ($document->find("#band-name-location .title")->length)
@@ -53,4 +53,4 @@
   echo "</div>";
 ?>
 
-<?php include "../elements/footer.php" ?>
+<?php require_once "../elements/footer.php" ?>

pages/asset.php

@@ -1,4 +1,4 @@
-<?php include "../utilities/file.php" ?>
+<?php require_once "../utilities/file.php" ?>
 
 <?php
   $file = "../assets/" . basename($_GET["file"]);

pages/index.php

@@ -1,5 +1,5 @@
-<?php include "../elements/header.php" ?>
-<?php include "../utilities/link.php" ?>
+<?php require_once "../elements/header.php" ?>
+<?php require_once "../utilities/link.php" ?>
 
 <h1><?= $config["title"] ?></h1>
 <p>
@@ -50,4 +50,4 @@
   ?>
 </ul>
 
-<?php include "../elements/footer.php" ?>
+<?php require_once "../elements/footer.php" ?>

pages/release.php

@@ -1,7 +1,7 @@
 <?php
-  include "../config/config.php";
-  include "../utilities/dom.php";
-  require "../modules/querypath/src/qp.php";
+  require_once "../config/config.php";
+  require_once "../utilities/dom.php";
+  require_once "../modules/querypath/src/qp.php";
 
   $ch = curl_init("https://" . urlencode($_GET["artist"]) . ".bandcamp.com/" . urlencode($_GET["type"]) . "/" . urlencode($_GET["name"]));
 
@@ -15,9 +15,9 @@
   $title = $json->current->title;
 ?>
 
-<?php include "../elements/header.php" ?>
-<?php include "../elements/sidebar.php" ?>
-<?php include "../utilities/link.php" ?>
+<?php require_once "../elements/header.php" ?>
+<?php require_once "../elements/sidebar.php" ?>
+<?php require_once "../utilities/link.php" ?>
 
 <?php
   if ($json) {
@@ -81,4 +81,4 @@
   };
 ?>
 
-<?php include "../elements/footer.php" ?>
+<?php require_once "../elements/footer.php" ?>

pages/search.php

@@ -2,9 +2,9 @@
   $title = htmlspecialchars($_GET["query"]);
 ?>
 
-<?php include "../elements/header.php" ?>
-<?php include "../elements/item.php" ?>
-<?php include "../utilities/link.php" ?>
+<?php require_once "../elements/header.php" ?>
+<?php require_once "../elements/item.php" ?>
+<?php require_once "../utilities/link.php" ?>
 
 <?php
   echo "<h1>Search: “" . htmlspecialchars($_GET["query"]) . "”</h1>";
@@ -50,4 +50,4 @@
   echo "</div>";
 ?>
 
-<?php include "../elements/footer.php" ?>
+<?php require_once "../elements/footer.php" ?>