Backport asynchronous thumbnail generation from Kabuki.

migrate_thumbs.php

@@ -0,0 +1,53 @@
+<?php
+/*****************************************************************************
+ * migrate_thumbs.php
+ * Migrates old-style thumbnails (meta) to new table.
+ *
+ * Kabuki CMS (C) 2013-2015, Aaron van Geffen
+ *****************************************************************************/
+
+// Include the project's configuration.
+require_once 'config.php';
+
+// Set up the autoloader.
+require_once 'vendor/autoload.php';
+
+// Initialise the database.
+$db = new Database(DB_SERVER, DB_USER, DB_PASS, DB_NAME);
+Registry::set('db', $db);
+
+// Do some authentication checks.
+Session::start();
+Registry::set('user', Authentication::isLoggedIn() ? Member::fromId($_SESSION['user_id']) : new Guest());
+
+
+$res = $db->query('
+	SELECT id_asset, variable, value
+	FROM assets_meta
+	WHERE variable LIKE {string:thumbs}',
+	['thumbs' => 'thumb_%']);
+
+while ($row = $db->fetch_assoc($res))
+{
+	if (!preg_match('~^thumb_(?<width>\d+)x(?<height>\d+)(?:_(?<mode>c[best]?))?$~', $row['variable'], $match))
+		continue;
+
+	echo 'Migrating ... ', $row['value'], '(#', $row['id_asset'], ")\r";
+
+	$db->insert('replace', 'assets_thumbs', [
+		'id_asset' => 'int',
+		'width' => 'int',
+		'height' => 'int',
+		'mode' => 'string-3',
+		'filename' => 'string-255',
+	], [
+		'id_asset' => $row['id_asset'],
+		'width' => $match['width'],
+		'height' => $match['height'],
+		'mode' => $match['mode'] ?? '',
+		'filename' => $row['value'],
+	]);
+}
+
+echo "\nDone\n";
+