diff --git a/vendor/fatfree/lib/CHANGELOG.md b/vendor/fatfree/lib/CHANGELOG.md
index b98111f..51d4f70 100644
--- a/vendor/fatfree/lib/CHANGELOG.md
+++ b/vendor/fatfree/lib/CHANGELOG.md
@@ -1,6 +1,18 @@
 CHANGELOG
 
-3.7.3
+3.8.0 (15 Feb 2022)
+*   Feat: allow access to previous session data in cache-based session handler
+*   Feat: pass session information to onSuspect Session handler
+*   Fix: PHP 8.1 compatibility fixes [#332](https://github.com/bcosca/fatfree-core/issues/332) [#333](https://github.com/bcosca/fatfree-core/issues/333)
+*   Fix: check for critical schemes in url validation
+*   Fix: plural format syntax with empty param, [#325](https://github.com/bcosca/fatfree-core/issues/325)
+*   Fix: DB mapper not able to fetch field scheme in sqlite views
+*   Fix: capitalization of array key X-Http-Method-Override in headers [#327](https://github.com/bcosca/fatfree-core/issues/327)
+*   Fix SMTP: allow RFC2047 encoded words in From/To/Cc/Bcc headers
+*   Fix: use correct ternary value, [#323](https://github.com/bcosca/fatfree-core/issues/323)
+*   Fix: trace not present in error handler when in CLI mode and !DEBUG, [#323](https://github.com/bcosca/fatfree-core/issues/323)
+
+3.7.3 (13 Dec 2020)
 *   NEW: added auto_increment detection, [bcosca/fatfree#1192](https://github.com/bcosca/fatfree/issues/1192), [bcosca/fatfree#1093](https://github.com/bcosca/fatfree/issues/1093), [bcosca/fatfree#1175](https://github.com/bcosca/fatfree/issues/1175), [#290](https://github.com/bcosca/fatfree-core/issues/290)
 *   added SMTP dialog error handling, [#317](https://github.com/bcosca/fatfree-core/issues/317)
 *   Fix: Check active transaction before rollback/commit (PHP8 issue)
diff --git a/vendor/fatfree/lib/COPYING b/vendor/fatfree/lib/COPYING
old mode 100755
new mode 100644
diff --git a/vendor/fatfree/lib/README.md b/vendor/fatfree/lib/README.md
new file mode 100644
index 0000000..c55722c
--- /dev/null
+++ b/vendor/fatfree/lib/README.md
@@ -0,0 +1,29 @@
+# fatfree-core
+Fat-Free Framework core library
+
+### Usage:
+
+First make sure to add a proper url rewrite configuration to your server, see https://fatfreeframework.com/3.6/routing-engine#DynamicWebSites
+
+**without composer:**
+
+```php
+$f3 = require('lib/base.php');
+```
+
+**with composer:**
+
+```
+composer require bcosca/fatfree-core
+```
+
+```php
+require("vendor/autoload.php");
+$f3 = \Base::instance();
+```
+
+---
+For the main repository (demo package), see https://github.com/bcosca/fatfree  
+For the test bench and unit tests, see https://github.com/f3-factory/fatfree-dev  
+For the user guide, see https://fatfreeframework.com/user-guide  
+For the documentation, see https://fatfreeframework.com/api-reference
diff --git a/vendor/fatfree/lib/audit.php b/vendor/fatfree/lib/audit.php
index a0d4338..26fe349 100644
--- a/vendor/fatfree/lib/audit.php
+++ b/vendor/fatfree/lib/audit.php
@@ -36,7 +36,8 @@ class Audit extends Prefab {
 	*	@param $str string
 	**/
 	function url($str) {
-		return is_string(filter_var($str,FILTER_VALIDATE_URL));
+		return is_string(filter_var($str,FILTER_VALIDATE_URL))
+			&& !preg_match('/^(javascript|php):\/\/.*$/i', $str);
 	}
 
 	/**
diff --git a/vendor/fatfree/lib/base.php b/vendor/fatfree/lib/base.php
index dfb59c1..7c75c79 100644
--- a/vendor/fatfree/lib/base.php
+++ b/vendor/fatfree/lib/base.php
@@ -45,7 +45,7 @@ final class Base extends Prefab implements ArrayAccess {
 	//@{ Framework details
 	const
 		PACKAGE='Fat-Free Framework',
-		VERSION='3.7.3-Release';
+		VERSION='3.8.1-Dev';
 	//@}
 
 	//@{ HTTP status codes (RFC 2616)
@@ -159,7 +159,7 @@ final class Base extends Prefab implements ArrayAccess {
 	**/
 	private function cut($key) {
 		return preg_split('/\[\h*[\'"]?(.+?)[\'"]?\h*\]|(->)|\./',
-			$key,NULL,PREG_SPLIT_NO_EMPTY|PREG_SPLIT_DELIM_CAPTURE);
+			$key,-1,PREG_SPLIT_NO_EMPTY|PREG_SPLIT_DELIM_CAPTURE);
 	}
 
 	/**
@@ -221,11 +221,11 @@ final class Base extends Prefab implements ArrayAccess {
 	 * @return mixed
 	 */
 	function cast($val) {
-		if (preg_match('/^(?:0x[0-9a-f]+|0[0-7]+|0b[01]+)$/i',$val))
+		if ($val && preg_match('/^(?:0x[0-9a-f]+|0[0-7]+|0b[01]+)$/i',$val))
 			return intval($val,0);
 		if (is_numeric($val))
 			return $val+0;
-		$val=trim($val);
+		$val=trim($val?:'');
 		if (preg_match('/^\w+$/i',$val) && defined($val))
 			return constant($val);
 		return $val;
@@ -389,18 +389,18 @@ final class Base extends Prefab implements ArrayAccess {
 				if (version_compare(PHP_VERSION, '7.3.0') >= 0) {
 					unset($jar['expire']);
 					if (isset($_COOKIE[$parts[1]]))
-						setcookie($parts[1],NULL,['expires'=>0]+$jar);
+						setcookie($parts[1],'',['expires'=>0]+$jar);
 					if ($ttl)
 						$jar['expires']=$time+$ttl;
-					setcookie($parts[1],$val,$jar);
+					setcookie($parts[1],$val?:'',$jar);
 				} else {
 					unset($jar['samesite']);
 					if (isset($_COOKIE[$parts[1]]))
 						call_user_func_array('setcookie',
-							array_merge([$parts[1],NULL],['expire'=>0]+$jar));
+							array_merge([$parts[1],''],['expire'=>0]+$jar));
 					if ($ttl)
 						$jar['expire']=$time+$ttl;
-					call_user_func_array('setcookie',[$parts[1],$val]+$jar);
+					call_user_func_array('setcookie',[$parts[1],$val?:'']+$jar);
 				}
 				$_COOKIE[$parts[1]]=$val;
 				return $val;
@@ -501,11 +501,11 @@ final class Base extends Prefab implements ArrayAccess {
 				if (version_compare(PHP_VERSION, '7.3.0') >= 0) {
 					$jar['expires']=$jar['expire'];
 					unset($jar['expire']);
-					setcookie($parts[1],NULL,$jar);
+					setcookie($parts[1],'',$jar);
 				} else {
 					unset($jar['samesite']);
 					call_user_func_array('setcookie',
-						array_merge([$parts[1],NULL],$jar));
+						array_merge([$parts[1],''],$jar));
 				}
 				unset($_COOKIE[$parts[1]]);
 			}
@@ -713,7 +713,7 @@ final class Base extends Prefab implements ArrayAccess {
 	**/
 	function split($str,$noempty=TRUE) {
 		return array_map('trim',
-			preg_split('/[,;|]/',$str,0,$noempty?PREG_SPLIT_NO_EMPTY:0));
+			preg_split('/[,;|]/',$str?:'',0,$noempty?PREG_SPLIT_NO_EMPTY:0));
 	}
 
 	/**
@@ -829,7 +829,7 @@ final class Base extends Prefab implements ArrayAccess {
 	**/
 	function hash($str) {
 		return str_pad(base_convert(
-			substr(sha1($str),-16),16,36),11,'0',STR_PAD_LEFT);
+			substr(sha1($str?:''),-16),16,36),11,'0',STR_PAD_LEFT);
 	}
 
 	/**
@@ -968,10 +968,11 @@ final class Base extends Prefab implements ArrayAccess {
 								isset($prop)?$prop:null
 							]
 						);
+					$php81=version_compare(PHP_VERSION, '8.1.0')>=0;
 					switch ($type) {
 						case 'plural':
 							preg_match_all('/(?<tag>\w+)'.
-								'(?:\s*\{\s*(?<data>.+?)\s*\})/',
+								'(?:\s*\{\s*(?<data>.*?)\s*\})/',
 								$mod,$matches,PREG_SET_ORDER);
 							$ord=['zero','one','two'];
 							foreach ($matches as $match) {
@@ -1051,19 +1052,42 @@ final class Base extends Prefab implements ArrayAccess {
 									($frac?strlen($frac)-2:0),
 								$decimal_point,$thousands_sep);
 						case 'date':
-							if (empty($mod) || $mod=='short')
-								$prop='%x';
-							elseif ($mod=='full')
-								$prop='%A, %d %B %Y';
-							elseif ($mod!='custom')
-								$prop='%d %B %Y';
-							return strftime($prop,$args[$pos]);
+							if ($php81) {
+								$lang = $this->split($this->LANGUAGE);
+								// requires intl extension
+								$formatter = new IntlDateFormatter($lang[0],
+									(empty($mod) || $mod=='short')
+										? IntlDateFormatter::SHORT :
+										($mod=='full' ? IntlDateFormatter::LONG : IntlDateFormatter::MEDIUM),
+									IntlDateFormatter::NONE);
+								return $formatter->format($args[$pos]);
+							} else {
+								if (empty($mod) || $mod=='short')
+									$prop='%x';
+								elseif ($mod=='full')
+									$prop='%A, %d %B %Y';
+								elseif ($mod!='custom')
+									$prop='%d %B %Y';
+								return strftime($prop,$args[$pos]);
+							}
 						case 'time':
-							if (empty($mod) || $mod=='short')
-								$prop='%X';
-							elseif ($mod!='custom')
-								$prop='%r';
-							return strftime($prop,$args[$pos]);
+							if ($php81) {
+								$lang = $this->split($this->LANGUAGE);
+								// requires intl extension
+								$formatter = new IntlDateFormatter($lang[0],
+									IntlDateFormatter::NONE,
+									(empty($mod) || $mod=='short')
+										? IntlDateFormatter::SHORT :
+										($mod=='full' ? IntlDateFormatter::LONG : IntlDateFormatter::MEDIUM),
+									IntlTimeZone::createTimeZone($this->hive['TZ']));
+								return $formatter->format($args[$pos]);
+							} else {
+								if (empty($mod) || $mod=='short')
+									$prop='%X';
+								elseif ($mod!='custom')
+									$prop='%r';
+								return strftime($prop,$args[$pos]);
+							}
 						default:
 							return $expr[0];
 					}
@@ -1089,7 +1113,7 @@ final class Base extends Prefab implements ArrayAccess {
 	*	@param $code string
 	**/
 	function language($code) {
-		$code=preg_replace('/\h+|;q=[0-9.]+/','',$code);
+		$code=preg_replace('/\h+|;q=[0-9.]+/','',$code?:'');
 		$code.=($code?',':'').$this->fallback;
 		$this->languages=[];
 		foreach (array_reverse(explode(',',$code)) as $lang)
@@ -1225,7 +1249,7 @@ final class Base extends Prefab implements ArrayAccess {
 				$time=microtime(TRUE);
 				header_remove('Pragma');
 				header('Cache-Control: max-age='.$secs);
-				header('Expires: '.gmdate('r',$time+$secs));
+				header('Expires: '.gmdate('r',round($time+$secs)));
 				header('Last-Modified: '.gmdate('r'));
 			}
 			else {
@@ -1342,7 +1366,7 @@ final class Base extends Prefab implements ArrayAccess {
 			$loggable=$this->split($loggable);
 		foreach ($loggable as $status)
 			if ($status=='*' ||
-				preg_match('/^'.preg_replace('/\D/','\d',$status).'$/',$code)) {
+				preg_match('/^'.preg_replace('/\D/','\d',$status).'$/',(string) $code)) {
 				error_log($text);
 				foreach (explode("\n",$trace) as $nexus)
 					if ($nexus)
@@ -1376,7 +1400,7 @@ final class Base extends Prefab implements ArrayAccess {
 			if ($this->hive['CLI'])
 				echo PHP_EOL.'==================================='.PHP_EOL.
 					'ERROR '.$error['code'].' - '.$error['status'].PHP_EOL.
-					$error['text'].PHP_EOL.PHP_EOL.$error['trace'];
+					$error['text'].PHP_EOL.PHP_EOL.(isset($error['trace']) ? $error['trace'] : '');
 			else
 				echo $this->hive['AJAX']?
 					json_encode($error):
@@ -1424,7 +1448,7 @@ final class Base extends Prefab implements ArrayAccess {
 		if (empty($parts[4]))
 			user_error(sprintf(self::E_Pattern,$pattern),E_USER_ERROR);
 		$url=parse_url($parts[4]);
-		parse_str(@$url['query'],$GLOBALS['_GET']);
+		parse_str(isset($url['query'])?$url['query']:'',$GLOBALS['_GET']);
 		if (preg_match('/GET|HEAD/',$verb))
 			$GLOBALS['_GET']=array_merge($GLOBALS['_GET'],$args);
 		$GLOBALS['_POST']=$verb=='POST'?$args:[];
@@ -1775,7 +1799,7 @@ final class Base extends Prefab implements ArrayAccess {
 							++$ctr;
 							if ($ctr/$kbps>($elapsed=microtime(TRUE)-$now) &&
 								!connection_aborted())
-								usleep(1e6*($ctr/$kbps-$elapsed));
+								usleep(round(1e6*($ctr/$kbps-$elapsed)));
 							echo $part;
 						}
 					}
@@ -2234,6 +2258,7 @@ final class Base extends Prefab implements ArrayAccess {
 	*	@return mixed
 	*	@param $key string
 	**/
+	#[\ReturnTypeWillChange]
 	function offsetexists($key) {
 		return $this->exists($key);
 	}
@@ -2244,6 +2269,7 @@ final class Base extends Prefab implements ArrayAccess {
 	*	@param $key string
 	*	@param $val mixed
 	**/
+	#[\ReturnTypeWillChange]
 	function offsetset($key,$val) {
 		return $this->set($key,$val);
 	}
@@ -2253,6 +2279,7 @@ final class Base extends Prefab implements ArrayAccess {
 	*	@return mixed
 	*	@param $key string
 	**/
+	#[\ReturnTypeWillChange]
 	function &offsetget($key) {
 		$val=&$this->ref($key);
 		return $val;
@@ -2262,6 +2289,7 @@ final class Base extends Prefab implements ArrayAccess {
 	*	Convenience method for removing hive key
 	*	@param $key string
 	**/
+	#[\ReturnTypeWillChange]
 	function offsetunset($key) {
 		$this->clear($key);
 	}
@@ -2378,7 +2406,7 @@ final class Base extends Prefab implements ArrayAccess {
 					$req.='?'.$query;
 			}
 			$_SERVER['REQUEST_URI']=$req;
-			parse_str($query,$GLOBALS['_GET']);
+			parse_str($query?:'',$GLOBALS['_GET']);
 		}
 		elseif (function_exists('getallheaders')) {
 			foreach (getallheaders() as $key=>$val) {
@@ -2400,8 +2428,8 @@ final class Base extends Prefab implements ArrayAccess {
 					$headers[strtr(ucwords(strtolower(strtr(
 						substr($key,5),'_',' '))),' ','-')]=&$_SERVER[$key];
 		}
-		if (isset($headers['X-HTTP-Method-Override']))
-			$_SERVER['REQUEST_METHOD']=$headers['X-HTTP-Method-Override'];
+		if (isset($headers['X-Http-Method-Override']))
+			$_SERVER['REQUEST_METHOD']=$headers['X-Http-Method-Override'];
 		elseif ($_SERVER['REQUEST_METHOD']=='POST' && isset($_POST['_method']))
 			$_SERVER['REQUEST_METHOD']=strtoupper($_POST['_method']);
 		$scheme=isset($_SERVER['HTTPS']) && $_SERVER['HTTPS']=='on' ||
@@ -2533,9 +2561,11 @@ final class Base extends Prefab implements ArrayAccess {
 		if (PHP_SAPI=='cli-server' &&
 			preg_match('/^'.preg_quote($base,'/').'$/',$this->hive['URI']))
 			$this->reroute('/');
-		if (ini_get('auto_globals_jit'))
+		if (ini_get('auto_globals_jit')) {
 			// Override setting
-			$GLOBALS+=['_ENV'=>$_ENV,'_REQUEST'=>$_REQUEST];
+			$GLOBALS['_ENV']=$_ENV;
+			$GLOBALS['_REQUEST']=$_REQUEST;
+		}
 		// Sync PHP globals with corresponding hive keys
 		$this->init=$this->hive;
 		foreach (explode('|',self::GLOBALS) as $global) {
@@ -2699,7 +2729,7 @@ class Cache extends Prefab {
 		if (!$this->dsn)
 			return TRUE;
 		$regex='/'.preg_quote($this->prefix.'.','/').'.*'.
-			preg_quote($suffix,'/').'/';
+			preg_quote($suffix?:'','/').'/';
 		$parts=explode('=',$this->dsn,2);
 		switch ($parts[0]) {
 			case 'apc':
diff --git a/vendor/fatfree/lib/basket.php b/vendor/fatfree/lib/basket.php
index 70cacee..924b84e 100644
--- a/vendor/fatfree/lib/basket.php
+++ b/vendor/fatfree/lib/basket.php
@@ -148,7 +148,7 @@ class Basket extends Magic {
 	**/
 	function save() {
 		if (!$this->id)
-			$this->id=uniqid(NULL,TRUE);
+			$this->id=uniqid('',TRUE);
 		$_SESSION[$this->key][$this->id]=$this->item;
 		return $this->item;
 	}
diff --git a/vendor/fatfree/lib/code.css b/vendor/fatfree/lib/code.css
old mode 100755
new mode 100644
diff --git a/vendor/fatfree/lib/composer.json b/vendor/fatfree/lib/composer.json
new file mode 100644
index 0000000..01bdca1
--- /dev/null
+++ b/vendor/fatfree/lib/composer.json
@@ -0,0 +1,12 @@
+{
+	"name": "bcosca/fatfree-core",
+	"description": "A powerful yet easy-to-use PHP micro-framework designed to help you build dynamic and robust Web applications - fast!",
+	"homepage": "http://fatfreeframework.com/",
+	"license": "GPL-3.0",
+	"require": {
+		"php": ">=5.4"
+	},
+	"autoload": {
+		"classmap": ["."]
+	}
+}
diff --git a/vendor/fatfree/lib/db/cursor.php b/vendor/fatfree/lib/db/cursor.php
index 2fd324a..266a143 100644
--- a/vendor/fatfree/lib/db/cursor.php
+++ b/vendor/fatfree/lib/db/cursor.php
@@ -107,6 +107,7 @@ abstract class Cursor extends \Magic implements \IteratorAggregate {
 	*	Causes a fatal error in PHP 5.3.5 if uncommented
 	*	return ArrayIterator
 	**/
+	#[\ReturnTypeWillChange]
 	abstract function getiterator();
 
 
diff --git a/vendor/fatfree/lib/db/jig/mapper.php b/vendor/fatfree/lib/db/jig/mapper.php
index 5d26427..8f4af54 100644
--- a/vendor/fatfree/lib/db/jig/mapper.php
+++ b/vendor/fatfree/lib/db/jig/mapper.php
@@ -325,7 +325,7 @@ class Mapper extends \DB\Cursor {
 					if (!array_key_exists($col,$val2))
 						$val2[$col]=NULL;
 					list($v1,$v2)=[$val1[$col],$val2[$col]];
-					if ($out=strnatcmp($v1,$v2)*
+					if ($out=strnatcmp($v1?:'',$v2?:'')*
 						(($order==SORT_ASC)*2-1))
 						return $out;
 				}
@@ -383,7 +383,7 @@ class Mapper extends \DB\Cursor {
 			return $this->update();
 		$db=$this->db;
 		$now=microtime(TRUE);
-		while (($id=uniqid(NULL,TRUE)) &&
+		while (($id=uniqid('',TRUE)) &&
 			($data=&$db->read($this->file)) && isset($data[$id]) &&
 			!connection_aborted())
 			usleep(mt_rand(0,100));
diff --git a/vendor/fatfree/lib/db/mongo/mapper.php b/vendor/fatfree/lib/db/mongo/mapper.php
index 0246f6d..71de62c 100644
--- a/vendor/fatfree/lib/db/mongo/mapper.php
+++ b/vendor/fatfree/lib/db/mongo/mapper.php
@@ -150,7 +150,7 @@ class Mapper extends \DB\Cursor {
 				);
 				$tmp=$this->db->selectcollection(
 					$fw->HOST.'.'.$fw->BASE.'.'.
-					uniqid(NULL,TRUE).'.tmp'
+					uniqid('',TRUE).'.tmp'
 				);
 				$tmp->batchinsert($grp['retval'],['w'=>1]);
 				$filter=[];
diff --git a/vendor/fatfree/lib/db/sql.php b/vendor/fatfree/lib/db/sql.php
index 566b94a..4c5cc44 100644
--- a/vendor/fatfree/lib/db/sql.php
+++ b/vendor/fatfree/lib/db/sql.php
@@ -339,7 +339,7 @@ class SQL {
 		$cmd=[
 			'sqlite2?'=>[
 				'SELECT * FROM pragma_table_info('.$this->quote($table).') JOIN ('.
-					'SELECT sql FROM sqlite_master WHERE type=\'table\' AND '.
+					'SELECT sql FROM sqlite_master WHERE (type=\'table\' OR type=\'view\')  AND '.
 					'name='.$this->quote($table).')',
 				'name','type','dflt_value','notnull',0,'pk',TRUE,'sql',
 					'/\W(%s)\W+[^,]+?AUTOINCREMENT\W/i'],
diff --git a/vendor/fatfree/lib/db/sql/mapper.php b/vendor/fatfree/lib/db/sql/mapper.php
index 574cc9f..52c8096 100644
--- a/vendor/fatfree/lib/db/sql/mapper.php
+++ b/vendor/fatfree/lib/db/sql/mapper.php
@@ -427,6 +427,7 @@ class Mapper extends \DB\Cursor {
 		$values='';
 		$filter='';
 		$pkeys=[];
+		$aikeys=[];
 		$nkeys=[];
 		$ckeys=[];
 		$inc=NULL;
@@ -449,6 +450,9 @@ class Mapper extends \DB\Cursor {
 				unset($field);
 			}
 		foreach ($this->fields as $key=>&$field) {
+			if ($field['auto_inc']) {
+                $aikeys[] = $key;
+            }
 			if ($field['pkey']) {
 				$field['previous']=$field['value'];
 				if (!$inc && empty($field['value']) &&
@@ -469,7 +473,7 @@ class Mapper extends \DB\Cursor {
 			}
 			unset($field);
 		}
-		if ($fields) {
+        if ($fields) {
 			$add=$aik='';
 			if ($this->engine=='pgsql' && !empty($pkeys)) {
 				$names=array_keys($pkeys);
@@ -478,7 +482,7 @@ class Mapper extends \DB\Cursor {
 			}
 			$lID=$this->db->exec(
 				(preg_match('/mssql|dblib|sqlsrv/',$this->engine) &&
-				array_intersect(array_keys($pkeys),$ckeys)?
+				array_intersect(array_keys($aikeys),$ckeys)?
 					'SET IDENTITY_INSERT '.$this->table.' ON;':'').
 				'INSERT INTO '.$this->table.' ('.$fields.') '.
 				'VALUES ('.$values.')'.$add,$args
diff --git a/vendor/fatfree/lib/image.php b/vendor/fatfree/lib/image.php
index b7f149c..367ca6e 100644
--- a/vendor/fatfree/lib/image.php
+++ b/vendor/fatfree/lib/image.php
@@ -258,12 +258,12 @@ class Image {
 			if ($width/$ratio<=$height) {
 				$cropw=round($origh*$width/$height);
 				imagecopyresampled($tmp,$this->data,
-					0,0,($origw-$cropw)/2,0,$width,$height,$cropw,$origh);
+					0,0,round(($origw-$cropw)/2),0,$width,$height,$cropw,$origh);
 			}
 			else {
 				$croph=round($origw*$height/$width);
 				imagecopyresampled($tmp,$this->data,
-					0,0,0,($origh-$croph)/2,$width,$height,$origw,$croph);
+					0,0,0,round(($origh-$croph)/2),$width,$height,$origw,$croph);
 			}
 		}
 		else
@@ -309,13 +309,13 @@ class Image {
 		if ($align & self::POS_Left)
 			$posx=0;
 		if ($align & self::POS_Center)
-			$posx=($imgw-$ovrw)/2;
+			$posx=round(($imgw-$ovrw)/2);
 		if ($align & self::POS_Right)
 			$posx=$imgw-$ovrw;
 		if ($align & self::POS_Top)
 			$posy=0;
 		if ($align & self::POS_Middle)
-			$posy=($imgh-$ovrh)/2;
+			$posy=round(($imgh-$ovrh)/2);
 		if ($align & self::POS_Bottom)
 			$posy=$imgh-$ovrh;
 		if (empty($posx))
@@ -374,10 +374,14 @@ class Image {
 				$block=$sprites[hexdec($hash[($j*$blocks+$i)*2])%$ctr];
 				for ($k=0,$pts=count($block);$k<$pts;++$k)
 					$block[$k]*=$dim;
-				imagefilledpolygon($sprite,$block,$pts/2,$fg);
+				if (version_compare(PHP_VERSION, '8.1.0') >= 0) {
+					imagefilledpolygon($sprite,$block,$fg);
+				} else {
+					imagefilledpolygon($sprite,$block,$pts/2,$fg);
+				}
 				for ($k=0;$k<4;++$k) {
 					imagecopyresampled($this->data,$sprite,
-						$i*$dim/2,$j*$dim/2,0,0,$dim/2,$dim/2,$dim,$dim);
+						round($i*$dim/2),round($j*$dim/2),0,0,round($dim/2),round($dim/2),$dim,$dim);
 					$this->data=imagerotate($this->data,90,
 						imagecolorallocatealpha($this->data,0,0,0,127));
 				}
@@ -424,25 +428,25 @@ class Image {
 					$char=imagecreatetruecolor($block,$block);
 					imagefill($char,0,0,$bg);
 					imagettftext($char,$size*2,0,
-						($block-$w)/2,$block-($block-$h)/2,
+						round(($block-$w)/2),round($block-($block-$h)/2),
 						$fg,$path,$seed[$i]);
 					$char=imagerotate($char,mt_rand(-30,30),
 						imagecolorallocatealpha($char,0,0,0,127));
 					// Reduce to normal size
 					$tmp[$i]=imagecreatetruecolor(
-						($w=imagesx($char))/2,($h=imagesy($char))/2);
+						round(($w=imagesx($char))/2),round(($h=imagesy($char))/2));
 					imagefill($tmp[$i],0,0,IMG_COLOR_TRANSPARENT);
 					imagecopyresampled($tmp[$i],
-						$char,0,0,0,0,$w/2,$h/2,$w,$h);
+						$char,0,0,0,0,round($w/2),round($h/2),$w,$h);
 					imagedestroy($char);
 					$width+=$i+1<$len?$block/2:$w/2;
 					$height=max($height,$h/2);
 				}
-				$this->data=imagecreatetruecolor($width,$height);
+				$this->data=imagecreatetruecolor(round($width),round($height));
 				imagefill($this->data,0,0,IMG_COLOR_TRANSPARENT);
 				for ($i=0;$i<$len;++$i) {
 					imagecopy($this->data,$tmp[$i],
-						$i*$block/2,($height-imagesy($tmp[$i]))/2,0,0,
+						round($i*$block/2),round(($height-imagesy($tmp[$i]))/2),0,0,
 						imagesx($tmp[$i]),imagesy($tmp[$i]));
 					imagedestroy($tmp[$i]);
 				}
diff --git a/vendor/fatfree/lib/magic.php b/vendor/fatfree/lib/magic.php
index f676506..92398a5 100644
--- a/vendor/fatfree/lib/magic.php
+++ b/vendor/fatfree/lib/magic.php
@@ -57,6 +57,7 @@ abstract class Magic implements ArrayAccess {
 	*	@return mixed
 	*	@param $key string
 	**/
+	#[\ReturnTypeWillChange]
 	function offsetexists($key) {
 		return Base::instance()->visible($this,$key)?
 			isset($this->$key):
@@ -69,6 +70,7 @@ abstract class Magic implements ArrayAccess {
 	*	@param $key string
 	*	@param $val mixed
 	**/
+	#[\ReturnTypeWillChange]
 	function offsetset($key,$val) {
 		return Base::instance()->visible($this,$key)?
 			($this->$key=$val):$this->set($key,$val);
@@ -79,6 +81,7 @@ abstract class Magic implements ArrayAccess {
 	*	@return mixed
 	*	@param $key string
 	**/
+	#[\ReturnTypeWillChange]
 	function &offsetget($key) {
 		if (Base::instance()->visible($this,$key))
 			$val=&$this->$key;
@@ -92,6 +95,7 @@ abstract class Magic implements ArrayAccess {
 	*	@return NULL
 	*	@param $key string
 	**/
+	#[\ReturnTypeWillChange]
 	function offsetunset($key) {
 		if (Base::instance()->visible($this,$key))
 			unset($this->$key);
diff --git a/vendor/fatfree/lib/session.php b/vendor/fatfree/lib/session.php
index 168e5b6..9e8d600 100644
--- a/vendor/fatfree/lib/session.php
+++ b/vendor/fatfree/lib/session.php
@@ -21,7 +21,7 @@
 */
 
 //! Cache-based session handler
-class Session {
+class Session extends Magic {
 
 	protected
 		//! Session ID
@@ -35,7 +35,9 @@ class Session {
 		//! Suspect callback
 		$onsuspect,
 		//! Cache instance
-		$_cache;
+		$_cache,
+		//! Session meta data
+		$_data=[];
 
 	/**
 	*	Open session
@@ -53,6 +55,7 @@ class Session {
 	**/
 	function close() {
 		$this->sid=NULL;
+		$this->_data=[];
 		return TRUE;
 	}
 
@@ -65,6 +68,7 @@ class Session {
 		$this->sid=$id;
 		if (!$data=$this->_cache->get($id.'.@'))
 			return '';
+		$this->_data = $data;
 		if ($data['ip']!=$this->_ip || $data['agent']!=$this->_agent) {
 			$fw=Base::instance();
 			if (!isset($this->onsuspect) ||
@@ -193,4 +197,29 @@ class Session {
 		$this->_ip=$fw->IP;
 	}
 
+	/**
+	 * check latest meta data existence
+	 * @param string $key
+	 * @return bool
+	 */
+	function exists($key) {
+		return isset($this->_data[$key]);
+	}
+
+	/**
+	 * get meta data from latest session
+	 * @param string $key
+	 * @return mixed
+	 */
+	function &get($key) {
+		return $this->_data[$key];
+	}
+
+	function set($key,$val) {
+		trigger_error('Unable to set data on previous session');
+	}
+
+	function clear($key) {
+		trigger_error('Unable to clear data on previous session');
+	}
 }
diff --git a/vendor/fatfree/lib/smtp.php b/vendor/fatfree/lib/smtp.php
index 8cef939..b329d4b 100644
--- a/vendor/fatfree/lib/smtp.php
+++ b/vendor/fatfree/lib/smtp.php
@@ -256,7 +256,7 @@ class SMTP extends Magic {
 		foreach ($headers as $key=>&$val) {
 			if (in_array($key,['From','To','Cc','Bcc'])) {
 				$email='';
-				preg_match_all('/(?:".+?" )?(?:<.+?>|[^ ,]+)/',
+				preg_match_all('/(?:".+?" |=\?.+?\?= )?(?:<.+?>|[^ ,]+)/',
 					$val,$matches,PREG_SET_ORDER);
 				foreach ($matches as $raw)
 					$email.=($email?', ':'').
@@ -283,7 +283,7 @@ class SMTP extends Magic {
 			unset($headers['Content-Type']);
 			$enc=$headers['Content-Transfer-Encoding'];
 			unset($headers['Content-Transfer-Encoding']);
-			$hash=uniqid(NULL,TRUE);
+			$hash=uniqid('',TRUE);
 			// Send mail headers
 			$out='Content-Type: multipart/mixed; boundary="'.$hash.'"'.$eol;
 			foreach ($headers as $key=>$val)
@@ -352,7 +352,7 @@ class SMTP extends Magic {
 			'Content-Type'=>'text/plain; '.
 				'charset='.Base::instance()->ENCODING
 		];
-		$this->host=strtolower((($this->scheme=strtolower($scheme))=='ssl'?
+		$this->host=strtolower((($this->scheme=strtolower($scheme?:''))=='ssl'?
 			'ssl':'tcp').'://'.$host);
 		$this->port=$port;
 		$this->user=$user;
diff --git a/vendor/fatfree/lib/template.php b/vendor/fatfree/lib/template.php
index fb6f21d..57062ea 100644
--- a/vendor/fatfree/lib/template.php
+++ b/vendor/fatfree/lib/template.php
@@ -43,7 +43,7 @@ class Template extends Preview {
 		$out='';
 		foreach ($node['@attrib'] as $key=>$val)
 			$out.='$'.$key.'='.
-				(preg_match('/\{\{(.+?)\}\}/',$val)?
+				(preg_match('/\{\{(.+?)\}\}/',$val?:'')?
 					$this->token($val):
 					Base::instance()->stringify($val)).'; ';
 		return '<?php '.$out.'?>';
diff --git a/vendor/fatfree/lib/web.php b/vendor/fatfree/lib/web.php
index 7a69051..4019ff4 100644
--- a/vendor/fatfree/lib/web.php
+++ b/vendor/fatfree/lib/web.php
@@ -232,7 +232,7 @@ class Web extends Prefab {
 					// Throttle output
 					++$ctr;
 					if ($ctr/$kbps>$elapsed=microtime(TRUE)-$start)
-						usleep(1e6*($ctr/$kbps-$elapsed));
+						usleep(round(1e6*($ctr/$kbps-$elapsed)));
 				}
 				// Send 1KiB and reset timer
 				echo fread($handle,1024);
@@ -1006,7 +1006,7 @@ if (!function_exists('gzdecode')) {
 		if (!is_dir($tmp=$fw->TEMP))
 			mkdir($tmp,Base::MODE,TRUE);
 		file_put_contents($file=$tmp.'/'.$fw->SEED.'.'.
-			$fw->hash(uniqid(NULL,TRUE)).'.gz',$str,LOCK_EX);
+			$fw->hash(uniqid('',TRUE)).'.gz',$str,LOCK_EX);
 		ob_start();
 		readgzfile($file);
 		$out=ob_get_clean();