$cm) $stale = true; elseif ($cm < time() - 6 * 3600) $stale = true; } if ($stale) { $body = generate_sitemap($base, $today); if ($body !== null) { @file_put_contents($cacheFile, $body, LOCK_EX); echo $body; exit; } /* 產生失敗就退回舊快取 */ if (is_file($cacheFile)) { readfile($cacheFile); exit; } } if (is_file($cacheFile)) { readfile($cacheFile); } exit; function generate_sitemap(string $base, string $today): ?string { try { $pdo = db(); /* 每間學校一個 URL（取 TC 列代表，tier 三語相同） */ $schools = $pdo->query("SELECT schoolid, tier FROM schools WHERE lang = 'tc' ORDER BY schoolid")->fetchAll(PDO::FETCH_ASSOC); $tags = array_keys(HAPPY_INDICATOR_DEFS); $tiers = ['kg', 'primary', 'secondary']; $gsAids = []; if (function_exists('gs_index')) { $idx = gs_index(); if (is_array($idx)) { foreach (($idx['articles'] ?? []) as $a) { $aid = (int) ($a['article_id'] ?? 0); if ($aid > 0) $gsAids[] = $aid; } } } ob_start(); echo "\n"; echo "\n"; $staticPages = ['index.php', 'about.php', 'search.php', 'bookmarks.php']; foreach ($staticPages as $p) { echo " \n"; echo " {$base}/{$p}\n"; echo " {$today}\n"; echo " \n"; } /* browse.php（all + 3 階段）三語 */ foreach (['', 'kg', 'primary', 'secondary'] as $t) { foreach (['tc', 'sc', 'en'] as $l) { $q = $t === '' ? "?lang={$l}" : "?tier={$t}&lang={$l}"; echo " \n {$base}/browse.php{$q}\n {$today}\n \n"; } } /* gs.php（all + 3 階段）三語 */ foreach (['', 'kg', 'primary', 'secondary'] as $t) { foreach (['tc', 'sc', 'en'] as $l) { $q = $t === '' ? "?lang={$l}" : "?tier={$t}&lang={$l}"; echo " \n {$base}/gs.php{$q}\n {$today}\n \n"; } } /* tag.php：每 tag × 3 階段 × 3 語 */ foreach ($tags as $tag) { foreach ($tiers as $t) { foreach (['tc', 'sc', 'en'] as $l) { $q = "?tag={$tag}&tier={$t}&lang={$l}"; echo " \n {$base}/tag.php{$q}\n {$today}\n \n"; } } } /* gs_article.php：每篇文章 × 3 語 */ foreach ($gsAids as $aid) { foreach (['tc', 'sc', 'en'] as $l) { echo " \n {$base}/gs_article.php?id={$aid}&lang={$l}\n {$today}\n \n"; } } /* 學校頁：id + 三語 hreflang */ foreach ($schools as $s) { $id = (int) $s['schoolid']; echo " \n"; echo " {$base}/school.php?id={$id}\n"; echo " {$today}\n"; echo " \n"; echo " \n"; echo " \n"; echo " \n"; } echo "\n"; return ob_get_clean(); } catch (Throwable $e) { return null; } }