fix not working installation under PHP 8.1 due to mysqli throwing errors now by default

api/src/Categories.php

@@ -125,7 +125,7 @@ class Categories
 		if (!$app_name) $app_name = $GLOBALS['egw_info']['flags']['currentapp'];
 
 		if ($accountid === self::GLOBAL_ACCOUNT ||
-			$accountid < 0 && $GLOBALS['egw']->accounts->exists($accountid) == 2)
+			(int)$accountid < 0 && $GLOBALS['egw']->accounts->exists($accountid) == 2)
 		{
 			$this->account_id = (int) $accountid;
 		}

api/src/Db.php

@@ -358,7 +358,7 @@ class Db
 				//error_log(__METHOD__."() this->Host(s)=$this->Host, n=$n --> host=$host");
 				$new_connection = !$this->Link_ID || !$this->Link_ID->IsConnected();
 				$this->_connect($host);
-				// check if connected node is healty
+				// check if connected node is healthy
 				if ($new_connection && self::$health_check)
 				{
 					call_user_func(self::$health_check, $this);

api/src/Exception.php

@@ -31,6 +31,6 @@ class Exception extends \Exception
 	// nothing fancy yet
 	function __construct($msg=null,$code=100,\Exception $previous=null)
 	{
-		return parent::__construct($msg, $code, $previous);
+		parent::__construct($msg, $code, $previous);
 	}
 }

api/src/Translation.php

@@ -354,7 +354,7 @@ class Translation
 					$loaded =& self::load_app_files($app, $l, null, $updated_load_via);
 				}
 				//error_log(__METHOD__."('$app', '$lang') instance_specific=$instance_specific, load_app(_files)() returned ".(is_array($loaded)?'Array('.count($loaded).')':array2string($loaded)));
-				if ($loaded || $instance_specific)
+				if ($loaded)
 				{
 					Cache::setCache($instance_specific ? Cache::INSTANCE : Cache::TREE,
 						__CLASS__, $app.':'.$l, $loaded);
@@ -401,6 +401,7 @@ class Translation
 			if (!isset(self::$db)) return;
 		}
 		$loaded = array();
+		try {
 			foreach (self::$db->select(self::LANG_TABLE, 'message_id,content', array(
 				'lang' => $lang,
 				'app_name' => $app,
@@ -408,6 +409,10 @@ class Translation
 			{
 				$loaded[strtolower($row['message_id'])] = $row['content'];
 			}
+		}
+		catch (Db\Exception $e) {
+			// ignore error
+		}
 		//error_log(__METHOD__."($app,$lang) took ".(1000*(microtime(true)-$start))." ms to load ".count($loaded)." phrases");
 		return $loaded;
 	}

setup/inc/class.setup.inc.php

@@ -55,7 +55,7 @@ class setup
 	 */
 	var $html;
 
-	var $system_charset;
+	var $system_charset = 'utf-8';
 	var $lang;
 
 	var $ConfigDomain;
@@ -90,8 +90,6 @@ class setup
 		$this->detection = new setup_detection();
 		$this->process   = new setup_process();
 
-		if (preg_match('/^[a-z0-9-]+$/i', $_REQUEST['system_charset'])) $this->system_charset = $_REQUEST['system_charset'];
-
 		/* The setup application needs these */
 		if ($html) $this->html = new setup_html();
 		if ($translation) $this->translation = new setup_translation();
@@ -137,7 +135,7 @@ class setup
 					$this->db_charset_was = $this->db->Link_ID->GetCharSet();	// needed for the update
 
 					// we can NOT set the DB charset for mysql, if the api version < 1.0.1.019, as it would mess up the DB content!!!
-					if (substr($this->db->Type,0,5) == 'mysql')	// we need to check the api version
+					if (substr($this->db->Type,0,5) === 'mysql')	// we need to check the api version
 					{
 						$api_version = $this->db->select($this->applications_table,'app_version',array(
 								'app_name'  => 'phpgwapi',

setup/inc/class.setup_detection.inc.php

@@ -300,7 +300,8 @@ class setup_detection
 		if (!$setup_info) $setup_info = $GLOBALS['setup_info'];
 
 		try {	// catch DB errors
-			if (!$GLOBALS['egw_setup']->db->Link_ID)
+			if (empty($GLOBALS['egw_setup']->db->Link_ID) ||
+				empty($GLOBALS['egw_setup']->db->Link_ID->_connectionID))
 			{
 				$old = error_reporting();
 				error_reporting($old & ~E_WARNING);	// no warnings
@@ -310,11 +311,13 @@ class setup_detection
 				$GLOBALS['egw_setup']->set_table_names();
 			}
 		}
-		catch(Api\Db\Exception $e) {
+		catch(\Exception $e) {
 			// ignore error
 		}
 
-		if (!$GLOBALS['egw_setup']->db->Link_ID || !$GLOBALS['egw_setup']->db->Link_ID->_connectionID)
+		if (empty($GLOBALS['egw_setup']->db->Link_ID) ||
+			empty($GLOBALS['egw_setup']->db->Link_ID->_connectionID) ||
+			$GLOBALS['egw_setup']->db->Link_ID->_connectionID->connect_errno)
 		{
 			$GLOBALS['egw_info']['setup']['header_msg'] = 'Stage 1 (Create Database)';
 			return 1;

setup/index.php

@@ -342,12 +342,6 @@ switch($GLOBALS['egw_info']['setup']['stage']['db'])
 					else
 					{
 						$s_info = $GLOBALS['egw_setup']->detection->upgrade_exclude($setup_info);
-						// Set the DB's client charset if a system-charset is set
-						if (preg_match('/^[a-z0-9-]+$/i', $_REQUEST['system_charset']))
-						{
-							$GLOBALS['egw_setup']->system_charset = $_REQUEST['system_charset'];
-							$GLOBALS['egw_setup']->db->Link_ID->SetCharSet($_REQUEST['system_charset']);
-						}
 						$setup_info = $GLOBALS['egw_setup']->process->pass($s_info,'new',$_REQUEST['debug'],True);
 						$GLOBALS['egw_info']['setup']['currentver']['phpgwapi'] = 'oldversion';
 					}