fix(php): include Zend extensions in loaded extensions list

get_loaded_extensions(false) hides Zend extensions like OPcache
and Xdebug. Combine the regular and Zend lists, dedupe, and sort
so the admin overview reflects what is actually loaded.

Signed-off-by: Frank Karlitschek <frank@nextcloud.com>

Author: karlitschek

lib/PhpStatistics.php

@@ -99,17 +99,20 @@ protected function getAPCuStatus(): array {
 	}
 
 	/**
-	 * Get all loaded php extensions
+	 * Get all loaded php extensions (PHP + Zend), de-duplicated and sorted.
 	 *
-	 * @return array|null of strings with the names of the loaded extensions
+	 * @return array|null array of extension names, or null if PHP forbids enumeration
 	 */
 	protected function getLoadedPhpExtensions(): ?array {
 		if (!function_exists('get_loaded_extensions')) {
 			return null;
 		}
-		$extensions = get_loaded_extensions();
-		natcasesort($extensions);
-
-		return $extensions;
+		$extensions = get_loaded_extensions(false);
+		// `get_loaded_extensions(true)` returns Zend extensions (OPcache, Xdebug, etc.)
+		// which are otherwise hidden from the regular call.
+		$zend = get_loaded_extensions(true);
+		$all = array_values(array_unique(array_merge($extensions, $zend)));
+		natcasesort($all);
+		return array_values($all);
 	}
 }