thinkphp 常用的查询

最新推荐文章于 2023-07-11 15:21:08 发布

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最新推荐文章于 2023-07-11 15:21:08 发布

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CC 4.0 BY-SA版权

文章标签： php 数据库

原文链接：http://www.cnblogs.com/zhaoyangjian724/p/6200154.html

本文详细介绍了PHP中常用的数据库查询方式，包括根据条件查询、单条查询、分组查询、范围查询等，并提供了对应的控制层程序示例。

php 常用的数据库查询方式:

//根据where 条件查询,使用select()方法

访问:http://localhost/thinkphp2/index.php/Machine/search_ip/?ip=192.168.32.101

返回:
array (size=2)
  0 => 
    array (size=4)
      'sn' => string '63' (length=2)
      'ip' => string '192.168.32.101' (length=14)
      'info' => string 'dr-mysql' (length=8)
      'env' => string 'env-backup' (length=10)
  1 => 
    array (size=4)
      'sn' => string '221' (length=3)
      'ip' => string '192.168.32.101' (length=14)
      'info' => string 'testscan' (length=8)
      'env' => string 'aa' (length=2)




控制层程序:
class machineAction extends Action {
    public function search_ip(){
	$user=M('machine');
	//返回数组
	//$arr=$user->select();
	$where['ip'] = $_GET['ip'];
	$Machine = M('Machine_info');
	$arr = $Machine->where($where)->select();
	dump($arr);
	//$this->assign('list',$arr);
	$this->show();
    }
}

//根据where 条件查询,使用find()方法,只返回一条:

访问:
http://localhost/thinkphp2/index.php/Machine/search_ip/?ip=192.168.32.101



只返回一条:
array (size=4)
  'sn' => string '63' (length=2)
  'ip' => string '192.168.32.101' (length=14)
  'info' => string 'dr-mysql' (length=8)
  'env' => string 'env-backup' (length=10)




控制层程序:
<?php
// 本类由系统自动生成，仅供测试用途
class machineAction extends Action {
    public function search_ip(){
	$user=M('machine');
	//返回数组
	//$arr=$user->select();
	$where['ip'] = $_GET['ip'];
	$Machine = M('Machine_info');
	$arr = $Machine->where($where)->find();
	dump($arr);
	//$this->assign('list',$arr);
	$this->show();
    }
}


//组查询,然后按ip排序


http://localhost/thinkphp2/index.php/Machine/search_env/env/env-zjtest3




控制层程序:

 public function search_env(){
		$Machine = M('Machine_info');
	//返回数组
	//$arr=$user->select();
	$where['env'] = $_GET['env'];

	$arr = $Machine->where($where)->order('ip')->select();
	dump($arr);
	//$this->assign('list',$arr);
	$this->show();
    }


//范围查询

http://localhost/thinkphp2/index.php/Machine/search_range?startip=10&stopip=20



控制层程序:

  public function search_range(){
		$m = M('Machine_info');
	//返回数组
	//$arr=$user->select();
		$startIp = $_GET['startip'];
		$stopIp = $_GET['stopip']; 


		$arr = $m->query("select * from machine_info where substring_index(ip,'.',-1)>".$startIp." and substring_index(ip,'.',-1)<".$stopIp);
	dump($arr);
	//$this->assign('list',$arr);
	$this->show();
    }
}

转载于:https://www.cnblogs.com/zhaoyangjian724/p/6200154.html