看看代码写的怎么样（非高手勿入）

<?php
require_once 'include/common.php';
if(!$_user_login) {
	exit(header('Location: index.php'));
}
//首先，增加三个请求类方法，也可以封装到静态类中
function req_pos( $name ) {
	return isset($_POST[$name]) ? $_POST[$name] : '';
}
function req_get( $name ) {
	return isset($_GET[$name]) ? $_GET[$name] : '';
}
function req_all($name) {
	return isset($_REQUEST[$name]) ? $_POST[$name] : '';
}
//然后，通过 switch 判断，而不是大量的 if 
switch (req_get('ajax')) {
	//Get and print the result value of api.getMonitor.responseJSON ...
	case 'list': exit(json_encode($_api->getMonitor($_token
			, req_all('orgid')
			, req_all('monitorType')
			, req_all('area')
			, req_all('latitude')
			, req_all('longitude')
			, req_all('distance')
		)));
	case 'getMonitorInfo':
		exit(json_encode($_api->getMonitor($_token)));
	case 'realTime':
		exit(json_encode($_api->getMonitorSensor($_token, req_all('monitorid'))));
	case 'chartData':
		$timestamp = time();
		$_returnJson = $_api->getMonitorData($_token
			, req_all('monitorid')
			, intval(req_all('timeType'))
			, ($timestamp - 86400 * $timeType * $timeType * $timeType) // start time
			, $timestamp // end time
			, req_all('sersorType')
			, '' //pollution
		);
		foreach($_returnJson['data']['rows'] as $key => $item ) {
			$_returnJson['data']['rows'][$key] = $item;
		}
		exit(json_encode($_returnJson));
	case 'timePlay':
		// do something...
	default : exit( 'invalid request' );
}

function ecmsExcel($rows, $tbFields, $title, $filename){
	require_once 'include/PHPExcel.php';
	$charColumn = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','AA','AB','AC','AD','AE','AF','AG','AH','AI','AJ','AK','AL','AM','AN','AO','AP','AQ','AR','AS','AT','AU','AV','AW','AX','AY','AZ','BA','BB','BC','BD','BE','BF','BG','BH','BI','BJ','BK','BL','BM','BN','BO','BP','BQ','BR','BS','BT','BU','BV','BW','BX','BY','BZ','CA','CB','CC','CD','CE','CF','CG','CH','CI','CJ','CK','CL','CM','CN','CO','CP','CQ','CR','CS','CT','CU','CV','CW','CX','CY','CZ');
	$objPHPExcel = new PHPExcel();
	$objPHPExcel->setActiveSheetIndex(0);
	$objPHPExcel->getActiveSheet()->setTitle($title);

	$indexFields = 0;
	foreach($tbFields as $field => $fieldName) {
		$cellName = $charColumn[$indexFields++];
		$objPHPExcel->getActiveSheet()->getColumnDimension($cellName)->setWidth(30);
		//echo $cellName." | ";
	}
	//echo '<br>';

	$indexFields = 0;
	foreach($tbFields as $field => $fieldName) {
		$cellName = $charColumn[$indexFields++].'1';
		$objPHPExcel->getActiveSheet()->setCellValue($cellName, $fieldName);
		//echo "$cellName, $fieldName | ";
	}
	//echo '<br>';

	$line = 1;
	foreach($rows as $key => $item) {
		$indexFields = 0;
		$line++;
		
		foreach($tbFields as $field => $fieldName) {
			$cellName = $charColumn[$indexFields++].$line;
			$cellValue = stripSlashes($item[$field]);
			$objPHPExcel->getActiveSheet()->setCellValue($cellName, "".$cellValue);
			//echo "$cellName, $cellValue | ";
		}
	//echo '<br>';
	}
	
	header("Pragma: public");
	header("Expires: 0");
	header("Cache-Control:must-revalidate, post-check=0, pre-check=0");
	header("Content-Type:application/force-download");
	header("Content-Type:application/vnd.ms-execl");
	header("Content-Type:application/octet-stream");
	header("Content-Type:application/download");;
	header('Content-Disposition:attachment;filename="'.$filename.'"');
	header("Content-Transfer-Encoding:binary");
	//echo $filename;  exit;
	//$objWriter = new PHPExcel_Writer_Excel2007($objPHPExcel);
	//$objWriter->save('php://output');
	$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
	$objWriter->save('php://output');
	exit;
}

<?php
require_once 'include/common.php';
if(!$_user_login) {
	header("Location: index.php");
	exit;
}

if($_GET['ajax'] == 'list') {
	$orgid = $_REQUEST['orgid'];
	$monitorType = $_REQUEST['monitorType'];
	$area = $_REQUEST['area'];
	$latitude = $_REQUEST['latitude'];
	$longitude = $_REQUEST['longitude'];
	$distance = $_REQUEST['distance'];
	$_returnJson = $_api->getMonitor($_token, $orgid, $monitorType,$area,$longitude,$latitude,$distance);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'getMonitorInfo') {
	$monitorid = $_REQUEST['monitorid'];
	$_returnJson = $_api->getMonitor($_token);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'realTime') {
	$monitorid = $_REQUEST['monitorid'];
	$_returnJson = $_api->getMonitorSensor($_token, $monitorid);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'chartData') {
	$monitorid = $_REQUEST['monitorid'];
	$timeType =intval($_REQUEST['timeType']);
	$beginTime = time()-86400*$timeType*$timeType*$timeType;
	$endTime = time();
	$pollution = '';
	$sersorType = $_REQUEST['sersorType'];
	$_returnJson = $_api->getMonitorData($_token, $monitorid,$timeType,$beginTime,$endTime,$sersorType,$pollution);
	foreach($_returnJson['data']['rows'] as $key=>$item) {
		$_returnJson['data']['rows'][$key] = $item;
	}
	//var_export($_returnJson);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'timePlay') {
	$monitorid = $_REQUEST['monitorids'];
	$timeType =trim($_REQUEST['timeType'])=='天'?3:2;
	$beginTime = strtotime($_REQUEST['time']);
	$endTime = $beginTime;
	$sersorType = '';
	$pollution = '';
	$_returnJson = $_api->getMonitorData($_token, $monitorid,$timeType,$beginTime,$endTime,$sersorType,$pollution);
	//var_export($_returnJson);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'getMonitorSwitch') {
	$monitorid = $_REQUEST['monitorid'];
	$_returnJson = $_api->getMonitorSwitch($_token, $monitorid);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'getMonitorCamera') {
	$monitorid = $_REQUEST['monitorid'];
	$_returnJson = $_api->getMonitorCamera($_token, $monitorid);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'setSwitchName') {
	$id = $_REQUEST['id'];
	$switchName = $_REQUEST['switchName'];
	$_returnJson = $_api->setSwitchName($_token, $id, $switchName);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'setSwitchCondition') {
	$id = trim($_REQUEST['id']);
	$comandStatus = trim($_REQUEST['comandStatus']);
	$linksensorid = trim($_REQUEST['linksensorid']);
	$level = trim($_REQUEST['level']);
	$mode = trim($_REQUEST['mode']);
	$maxval = trim($_REQUEST['maxval']);
	$minval = trim($_REQUEST['minval']);
	$tolerance = trim($_REQUEST['tolerance']);
	$remark = trim($_REQUEST['remark']);
	$_returnJson = $_api->setSwitchCondition($_token, $id, $comandStatus, $linksensorid, $level, $mode, $maxval, $minval, $tolerance, $remark);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'setAppointmentControl') {
	$id = trim($_REQUEST['id']);
	$comandStatus = trim($_REQUEST['comandStatus']);
	$beginTime = trim($_REQUEST['beginTime']);
	$endTime = trim($_REQUEST['endTime']);
	$_returnJson = $_api->setAppointmentControl($_token, $id, $comandStatus, $beginTime, $endTime);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'setManualControl') {
	$id = trim($_REQUEST['id']);
	$comandStatus = trim($_REQUEST['comandStatus']);
	$_returnJson = $_api->setManualControl($_token, $id, $comandStatus);
	echo json_encode($_returnJson);
	exit;
}

if($_GET['ajax'] == 'getMonitorAlarm') {
	$monitorid = trim($_REQUEST['monitorid']);
	$_returnJson = $_api->getMonitorAlarm($_token, $monitorid);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'setAlarmCondition') {
	$monitorid = trim($_REQUEST['monitorid']);
	$linksensorid = trim($_REQUEST['linksensorid']);
	$data = array( 
		'id' => trim($_REQUEST['id']),
		'mode' => trim($_REQUEST['mode']),
		'maxval' => trim($_REQUEST['maxval']),
		'minval' => trim($_REQUEST['minval']),
		'frequency' => trim($_REQUEST['frequency']),
		'issms' => trim($_REQUEST['issms']),
		'smsname' => trim($_REQUEST['smsname']),
		'smsvalue' => trim($_REQUEST['smsvalue']),
		'isemail' => trim($_REQUEST['isemail']),
		'emailname' => trim($_REQUEST['emailname']),
		'emailvalue' => trim($_REQUEST['emailvalue']),
		'isvideo' => trim($_REQUEST['isvideo']),
		'ispic' => trim($_REQUEST['ispic']),
		'remark' => trim($_REQUEST['remark']),
	);
	$_returnJson = $_api->setAlarmCondition($_token, $monitorid, $linksensorid, $data);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'getMonitorRank') {
	$beginTime = strtotime(trim($_REQUEST['beginTime']));
	$endTime = strtotime(trim($_REQUEST['endTime']));
	$monitorType = '';
	$sersorType = trim($_REQUEST['sersorType']);
	$asc = trim($_REQUEST['asc']);
	$timeType = trim($_REQUEST['timeType']);
	$size = trim($_REQUEST['size']);
	$_returnJson = $_api->getMonitorRank($_token, $beginTime, $endTime, $monitorType, $sersorType, $asc, $timeType, $size);
	echo json_encode($_returnJson);
	exit;
}

if($_GET['ajax'] == 'monitorData') {
	$monitorid = $_REQUEST['monitorid'];
	$timeType =intval($_REQUEST['timeType']);
	$beginTime = $_REQUEST['beginTime']?strtotime(trim($_REQUEST['beginTime'])):time()-86400;
	$endTime = $_REQUEST['endTime']?strtotime(trim($_REQUEST['endTime'])):time();
	$sersorType = $_REQUEST['sersorType'];
	$pollution = $_REQUEST['pollution'];
	$size = $_REQUEST['size']?$_REQUEST['size']:-1;
	$page = $_REQUEST['page']?$_REQUEST['page']:-1;
	$_returnJson = $_api->getMonitorData($_token, $monitorid,$timeType,$beginTime,$endTime,$sersorType,$pollution,$size,$page);
	//var_export($_returnJson);
	$times = ($endTime-$beginTime)/60;
	if($_returnJson['code']==0) {
		if($timeType == 1) {
			$_returnJson['data']['times'] = intval($times/15);
		} else if($timeType == 2) {
			$_returnJson['data']['times'] = intval($times/60);
		} else if($timeType == 3) {
			$_returnJson['data']['times'] = intval($times/60/24);
		} else if($timeType == 4) {
			$_returnJson['data']['times'] = intval($times/60/24/7);
		} else if($timeType == 5) {
			$_returnJson['data']['times'] = intval($times/60/24/30);
		}
	}
	echo json_encode($_returnJson);
	exit;
}

if($_GET['ajax'] == 'monitorPollutionRankRatio') {
	$monitorid = $_REQUEST['monitorid'];
	$timeType =intval($_REQUEST['timeType']);
	$beginTime = $_REQUEST['beginTime']?strtotime(trim($_REQUEST['beginTime'])):time()-86400*30;
	$endTime = $_REQUEST['endTime']?strtotime(trim($_REQUEST['endTime'])):time();
	$_returnJson = $_api->getMonitorPollutionRankRatio($_token, $monitorid, $beginTime, $endTime);
	//var_export($_returnJson);
	echo json_encode($_returnJson);
	exit;
}

if($_GET['ajax'] == 'monitorMainPollutionRatio') {
	$monitorid = $_REQUEST['monitorid'];
	$timeType =intval($_REQUEST['timeType']);
	$beginTime = $_REQUEST['beginTime']?strtotime(trim($_REQUEST['beginTime'])):time()-86400*30;
	$endTime = $_REQUEST['endTime']?strtotime(trim($_REQUEST['endTime'])):time();
	$_returnJson = $_api->getMonitorMainPollutionRatio($_token, $monitorid, $beginTime, $endTime);
	//var_export($_returnJson);
	echo json_encode($_returnJson);
	exit;
}

if($_GET['ajax'] == 'monitorDataTongbi') {
	$monitorid = $_REQUEST['monitorid'];
	$sersorType = $_REQUEST['sersorType'];
	$timeType =5;
	$beginTime = strtotime("-3 year");
	$endTime = time();
	$pollution = '';
	$_returnJson = $_api->getMonitorData($_token, $monitorid,$timeType,$beginTime,$endTime,'',$pollution);
	$list = array('legend'=>array(),'xAxis'=>array('01月','02月','03月','04月','05月','06月','07月','08月','09月','10月','11月','12月'),'series'=>array(),);
	if($_returnJson['code'] == 0) {
		$data = $_returnJson['data']['rows'];
		foreach($data as $item) {
			$ym = explode('-',$item['time']);
			if(!$list['series'][$ym[0]]) {
				foreach($list['xAxis'] as $mon) {
					$list['series'][$ym[0]][$mon] = 0;
				}
			}
			$list['series'][$ym[0]][$ym[1]] = $item[$sersorType]=='-9999.99'?0:$item[$sersorType];
		}
		foreach($list['series'] as $y=>$items) {
			$list['series'][$y] = array_values($list['series'][$y]);
		}
		$list['legend'] = array_keys($list['series']);
	}
	$_returnJson['data'] = $list;
	//var_export($_returnJson);
	echo json_encode($_returnJson);
	exit;
}

if($_GET['ajax'] == 'monitorDataHuanbi') {
	$monitorid = $_REQUEST['monitorid'];
	$sersorType = $_REQUEST['sersorType'];
	$timeType =5;
	$beginTime = strtotime("-1 year");
	$endTime = time();
	$pollution = '';
	$_returnJson = $_api->getMonitorData($_token, $monitorid,$timeType,$beginTime,$endTime,'',$pollution);
	$list = array();
	if($_returnJson['code'] == 0) {
		$data = $_returnJson['data']['rows'];
		foreach($data as $item) {
			$list[] = array('time'=>$item['time'],'val'=>$item[$sersorType]=='-999.99'?'0':$item[$sersorType]);
		}
	}
	$_returnJson['data'] = $list;
	//var_export($_returnJson);
	echo json_encode($_returnJson);
	exit;
}

if($_GET['ajax'] == 'getProject') {
	$monitorid = $_REQUEST['monitorid'];
	$_returnJson = $_api->getProject($_token, $monitorid);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'setProject') {
	$_returnJson = $_api->setProject($_token, $_POST);
	echo json_encode($_returnJson);
	exit;
}
if($_GET['ajax'] == 'getAlarmHistoryList') {
	$monitorid = $_REQUEST['monitorid'];
	$alarmType = $_REQUEST['alarmType'];
	$beginTime = $_REQUEST['beginTime']?strtotime(trim($_REQUEST['beginTime'])):time()-86400*30;
	$endTime = $_REQUEST['endTime']?strtotime(trim($_REQUEST['endTime'])):time();
	$size = $_REQUEST['size']?$_REQUEST['size']:10;
	$page = $_REQUEST['page']?$_REQUEST['page']:1;
	$_returnJson = $_api->getAlarmHistoryList($_token, $monitorid, $alarmType, $beginTime, $endTime, $page, $size);
	echo json_encode($_returnJson);
	exit;
}