PHP MySql插入數組

public function insertData($table,$data){
       $field=implode(',', array_keys($data));
       foreach (array_values($data) as $key=>$val){
        $value .="'".$val."'";
        if ($key<count($data)-1)
        $value .=",";
        }
     $sql= "INSERT INTO ".$table."(".$field.") values(".$value.")";
        return $this->insert($sql);
       }