diff --git a/engine/lib/Mysql.class.php b/engine/lib/Mysql.class.php
index c49bfa3..21fd3fe 100644
--- a/engine/lib/Mysql.class.php
+++ b/engine/lib/Mysql.class.php
@@ -9,14 +9,18 @@ class Mysql{
     private function connect( $is_master = true ){
         if( $is_master ) $dbInfo = $this->master;
         else $dbInfo = $this->slave;
-        if( !$db = mysqli_connect( $dbInfo['host'] , $dbInfo['user'] , $dbInfo['passwd'] ) ){
+        if( !isset( $dbInfo['port'] ) || !$dbInfo['port'] ){
+            $dbInfo['port'] = '3306';
+        }
+        if( !$db = mysqli_connect( $dbInfo['host'] , $dbInfo['user'] , $dbInfo['passwd'] , $dbInfo['dbname']  , $dbInfo['port'] ) ){
             die('can\'t connect to mysql ' . $ $dbInfo['host']  );
         }else{
-	       // mysqli_query( "set names 'utf8'" , $db );
-	        mysqli_query( $db , "set names 'utf8'" );
+           // mysqli_query( "set names 'utf8'" , $db );
+            //mysqli_query( $db , "set names 'utf8'" );
+            mysqli_query( $db , "set names 'utf8mb4'" );
         }
         //echo 'connect to: '. $dbInfo['host'].'at db:'.$dbInfo['dbname'].'<br>';
-        mysqli_select_db( $db , $dbInfo['dbname'] );
+        //mysqli_select_db( $db , $dbInfo['dbname'] );
         
         return $db;
     }  
@@ -54,7 +58,7 @@ class Mysql{
         //$GLOBALS['MYSQL_LAST_ERROR'] = mysqli_error($dblink);
         //$GLOBALS['MYSQL_LAST_ERRNO'] = mysqli_errno($dblink);
         if( mysqli_errno($dblink) ){
-	         print_r(  mysqli_error($dblink) );
+	         error_log(  mysqli_error($dblink) );
         }
         
       
@@ -62,7 +66,7 @@ class Mysql{
     
     public function runSql( $sql ) {
         $ret = mysqli_query(  $this->dbWrite()  , $sql );
-        $this->saveError( $this->dbWrite() );
+        $this->saveError( $this->dbWrite );
         return $ret;
     }
     public function getData( $sql , $key = NULL ){
@@ -137,4 +141,4 @@ class Mysql{
     public function error(){
         return $GLOBALS['MYSQL_LAST_ERROR'];
     }
-}
\ No newline at end of file
+}