feat: Add preload.php script for opcache preloading

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

lib/base.php

@@ -368,6 +368,9 @@ class OC {
 	}
 
 	public static function initSession(): void {
+		if (defined('PHP_PRELOAD')) {
+			return;
+		}
 		$request = Server::get(IRequest::class);
 
 		// TODO: Temporary disabled again to solve issues with CalDAV/CardDAV clients like DAVx5 that use cookies

lib/private/Config.php

@@ -202,7 +202,7 @@ class Config {
 			unset($CONFIG);
 
 			// Invalidate opcache (only if the timestamp changed)
-			if (function_exists('opcache_invalidate')) {
+			if (!defined('PHP_PRELOAD') && function_exists('opcache_invalidate')) {
 				@opcache_invalidate($file, false);
 			}
 
@@ -233,7 +233,7 @@ class Config {
 				fclose($filePointer);
 			}
 
-			if (!defined('PHPUNIT_RUN') && headers_sent()) {
+			if (!defined('PHP_PRELOAD') && !defined('PHPUNIT_RUN') && headers_sent()) {
 				// syntax issues in the config file like leading spaces causing PHP to send output
 				$errorMessage = sprintf('Config file has leading content, please remove everything before "<?php" in %s', basename($file));
 				if (!defined('OC_CONSOLE')) {

preload.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+define('PHP_PRELOAD', 1);
+$_SERVER['SCRIPT_FILENAME'] = __DIR__ . '/index.php';
+$_SERVER['SCRIPT_NAME'] = '/index.php';
+require_once __DIR__ . '/lib/base.php';
+
+function scanFolder(string $folder): void {
+	$files = new RecursiveIteratorIterator(
+		new RecursiveDirectoryIterator($folder),
+		RecursiveIteratorIterator::LEAVES_ONLY
+	);
+
+	// names to skip
+	$skip = [
+		'update.php',
+		'index.php',
+		'cron.php',
+		'console.php',
+		'command.php',
+		'routes.php',
+		'authpicker.php',
+		'grant.php',
+		'/templates',
+		'composer/',
+		'tests/',
+	];
+
+	// require all
+	foreach ($files as $file) {
+		// check skipping
+		foreach ($skip as $s) {
+			if (strpos($file->getPathname(), $s) !== false) {
+				continue 2;
+			}
+		}
+
+		if (substr($file->getFilename(), -4) === '.php') {
+			require_once $file;
+		}
+	}
+}
+
+scanFolder(__DIR__ . '/lib');
+scanFolder(__DIR__ . '/core');
+// scanFolder(__DIR__ . '/apps');