westdc-zf1/application/default/controllers/VisualController.php

<?php

class VisualController extends Zend_Controller_Action 
{
   
    function preDispatch()
    {
    	$this->view->config = Zend_Registry::get('config');
    	$this->db=Zend_Registry::get('db');
		$this->dbh = new PDO("pgsql:dbname=qinghaihu;host=localhost", "postgres", "postgres" ); 
    }
	
	function indexAction()
	{
			        
	}
	
	function getTemperatureByStation($sid)
	{
		
		$sql = "select id,station_id as sid,date,avg_air_temperature as temp from daily_meteorological_data where station_id=$sid";
		
		$sth = $this->dbh->prepare($sql);
		$sth->execute();
		$temp = $sth->fetchAll();
		
		$dataSet = array();
		
		foreach ($temp as $k=>$v)
		{
			$dataSet[] = array(strtotime($v['date'])*1000,$v['temp']);
		}
		unset($temp);
		
		return $dataSet;
		
	}
	
	function createTemperatureDataSet($sid)
	{
		$data = array(
				"name"=>"站点：$sid",
				"data"=>$this->getTemperatureByStation($sid),
				"tooltip"=>array(
                    "valueDecimals"=> 1,
					"valueSuffix"=> '°C'
                )
			);
			
		return $data;
	}
	
	function dataAction()
	{
		
		$this->_helper->layout->disableLayout();
		$this->_helper->viewRenderer->setNoRender();
		
		$sql = "select station_id as sid from daily_meteorological_data group by station_id";
		
		$sth = $this->dbh->prepare($sql);
		$sth->execute();
		$stations = $sth->fetchAll();
		
		$datas = array();
		
		foreach($stations as $v)
		{
			$datas[]=$this->createTemperatureDataSet($v['sid']);
		}

		$data = array(
				"label"=>"气温",
				"title"=>'气温',
				"datas"=>$datas
			);
			
		$this->jsonexit($data);
		return true;
	}
	
	function utcMsTime($time=''){
		if(empty($time))
		return (time()+8*3600)*1000;
		else
		return $time*1000;
	}
	
	/*
    * jsonexit() 退出并返回json数据
    *
    * param array $data		要返回的JSON数据，可以是任意数组
    *
	* return application/JSON
    */
	public function jsonexit($data){
		$this->getResponse()->setHeader('Content-Type', 'application/json')->appendBody(json_encode($data,JSON_NUMERIC_CHECK));
		return true;  
	}//jsonexit() 退出并返回json数据
 
}


/* 
			 数据模型
			 "data"=>array(
			 	
				//第一条曲线
			 	"data1"=>array(
						"title"=>"5米风速",
						"unit"=>"m/s",
						"sensor"=>"传感器XXX",
						"sensor_type"=>"传感器类型",
						"datas"=>array(
								array($this->utcMsTime(),26.0),
								array($this->utcMsTime()+3600*1000,28.1),
								array($this->utcMsTime()+7200*1000,30.9),
								array($this->utcMsTime()+10800*1000,32.0),
								array($this->utcMsTime()+12800*1000,28.0),
								array($this->utcMsTime()+13800*1000,22.0)
							)
					),
					
				
				//第二条曲线
				"data2"=>array(
						"title"=>"10米风速",
						"unit"=>"m/s",
						"sensor"=>"传感器XXX",
						"sensor_type"=>"传感器类型",
						"datas"=>array(
								array($this->utcMsTime(),26.0),
								array($this->utcMsTime()+5600*1000,22.1),
								array($this->utcMsTime()+8200*1000,35.9),
								array($this->utcMsTime()+11800*1000,32.0),
								array($this->utcMsTime()+13900*1000,22.0),
								array($this->utcMsTime()+16800*1000,21.0)
							)
					),
					
				//第三条.......
			 )
			
			*/