Added update method

src/WPDO.php

@@ -185,6 +185,33 @@ class WPDO {
         
     }
     
+    public function update($fields, $values_update, $where_sql, $values) {
+        
+        $fields=$this->check_fields($fields);
+        
+        if(count($fields)!=count($values_update)) {
+            
+            throw new Exception('No valid values for insert in '.$this->table->name);
+            
+        }
+        
+        //$final_fields=implode('`, `', $fields);
+        $final_fields=[];
+        
+        foreach($fields as $field) {
+            
+            
+            
+        }
+        
+        $query='update '.$this->table->name.' SET ';
+        //echo $query;
+        $this->sth=$this->conn->prepare($query);
+            
+        return $this->sth->execute($values);
+        
+    }
+    
     public function check_fields($fields) {
         
         if($fields[0]!='*') {