大概在1792行：[code] if(isset($this->options['where'])){
$this->options['where'] = isset($where)? array_merge($this->options['where'],$where):$this->options['where'];
}else{
if(isset($where)) $this->options['where'] = $where;
}[code]原版代码中$where 变量isset($where)==false, array_merge会将之前设置查询条件都清空，bug严重！