chore: variety資料夾改名vedio並同步連結

待確認/三個詞專案/php-admin-practice/delete.php

@@ -0,0 +1,5 @@
+<?php
+require __DIR__ . '/config.php'; requireLogin(); checkCsrf();
+$stmt = $pdo->prepare('DELETE FROM stages WHERE id = ?');
+$stmt->execute([(int)($_POST['id'] ?? 0)]);
+header('Location: index.php');