ThinkPHP模型操作指南

一. 文件夹模型创建常用连贯操作

    //1.where 操作添加搜索条件    $m = M('User');    $arr = $m->where('id' => 'desc')                 ->select();    $arr = $m->where(array('id' => 'desc', 'sex' => '男'))                 ->select();    var_dump($arr);  
  
    //2.order 操作排序    $arr = $m->where('id' => 'desc')                 ->order('id')                 ->select();    $arr = $m->where(array('id' => 'desc', 'sex' => '男'))                 ->order('id')                 ->select();  
  
    //3.limit 操作限制条件    $arr = $m->limit(10)                 ->select();    $arr = $m->limit(3,5)                 ->select();  
  
    //4.field 设置查询字段    $arr = $m->order(array('id' => 'desc'))                 ->limit('3,3')                 ->field("username")                 ->("id,username")                 ->select();    $arr = $m->order(array('id' => 'desc'))                 ->limit('3,3')                 ->field("username as name")                 ->select();