From d4be70eb78971cb16342a497b70156cda4b3cf45 Mon Sep 17 00:00:00 2001
From: Remo Zaros <remo@localhost.localdomain>
Date: Tue, 19 May 2026 16:56:03 +0200
Subject: [PATCH] Change postcode_in_range() to work with admin page

---
 session_dialog.php | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/session_dialog.php b/session_dialog.php
index fd265e3..c3bb69a 100644
--- a/session_dialog.php
+++ b/session_dialog.php
@@ -116,7 +116,7 @@ function render_dialog_html()
                         name="postcode"
                         title="Voer een geldige Nederlandse postcode in (bijv. 1234AB of 1234 AB)."
                         pattern="[1-9][0-9]{3} ?(?!sa|sd|ss)[a-zA-Z]{2}"
-                        placeholder="1010 AA"
+                        placeholder="5010 AA"
                         size="10"
                         required
                         autocomplete="off"
@@ -272,6 +272,15 @@ function getStraatnaam($postcode, $huisnummer)
 
 function postcode_in_range($postcode)
 {
+    $vals = get_option("local_postcodes_values", "");
+    $rows = preg_split("/\R/", $vals, -1, PREG_SPLIT_NO_EMPTY);
+    $pc_arr = [];
+
+    foreach ($rows as $row) {
+        $row = trim($row);
+        $postcode_range = explode("|", $row);
+        $pc_arr[] = [(int) $postcode_range[0], (int) $postcode_range[1]];
+    }
     $cleanPostcode = strtoupper(preg_replace("/\s+/", "", $postcode));
 
     if (!preg_match('/^\d{4}[A-Z]{2}$/', $cleanPostcode)) {
@@ -280,10 +289,12 @@ function postcode_in_range($postcode)
 
     $numberPart = (int) substr($cleanPostcode, 0, 4);
 
-    return ($numberPart >= 4800 && $numberPart <= 4899) ||
-        ($numberPart >= 5000 && $numberPart <= 5199) ||
-        ($numberPart >= 5260 && $numberPart <= 5268) ||
-        ($numberPart >= 5688 && $numberPart <= 5689);
+    foreach ($pc_arr as $pc_to_check) {
+        if ($numberPart >= $pc_to_check[0] && $numberPart <= $pc_to_check[1]) {
+            return true;
+        }
+    }
+    return false;
 }
 
 function modify_checkout_with_js()