Update DB.php

Author: riverside

src/DB.php

@@ -39,8 +39,7 @@ class DB
 
     private $where = array();
 
-    public function __construct()
-    {
+    public function __construct() {
         $this->mount();
     }
 
@@ -90,6 +89,10 @@ protected function buildInsert(array $data, $modifiers = null, $type = null): st
                 continue;
             }
 
+            if ($value == "") {
+                $value = self::raw('NULL');
+            }
+
             if ($value instanceof Expression) {
                 $tmp[] = sprintf("%s = %s", $column, $value->getValue());
             } else {
@@ -190,8 +193,7 @@ public function commit(): DB
         return $this;
     }
 
-    public static function config(string $filename)
-    {
+    public static function config(string $filename) {
         self::$config = $filename;
     }
 
@@ -275,8 +277,7 @@ public function delete($modifiers = null): ?int
         return $this->sth->rowCount();
     }
 
-    protected function dump()
-    {
+    protected function dump() {
         if ($this->debug) {
             echo '<pre>';
             $this->sth->debugDumpParams();