IoT data seve API (php) for GoogleHome

wt-api.php

<?php
// $file = 'dat/rest-data.json';

class AppConst {
	var $val01 = 'val01_###';
	var $mDir='dat';
	var $mExtName ='.json';
	var $mOK_CODE=1;
	var $mNG_CODE=0;

	function __construct(){
	}	
}
$mConst = new AppConst();

//------------------------------------
// @calling
// @purpose :
// @date
// @argment
// @return
//------------------------------------
function write_f4_proc( $dname, $v4, $v5 ){
	$const = new AppConst();
	$ret= $const->mNG_CODE;
	$sFnm = $const->mDir . "/" . $dname . $const->mExtName;
	$dat["temperature"] =0;
	$dat["humidity"] =0;
	if(isset($v4 )){
		$dat["temperature"] =$v4;	
	}
	if(isset($v5 )){
		$dat["humidity"] = $v5;
	}
	$sJson =json_encode($dat);
	$current = $sJson;
	file_put_contents($sFnm , $current);
	
	$ret = $const->mOK_CODE;
	return $ret;
}
//
// main
if(isset($_GET["value1"])){
	
	$dat["temperature"]= $_GET["value1"];
	$dat["humidity"]=0;
//	$dat["humidity"]= $_GET["value2"];
	if(isset($_GET["value2"])){
		$dat["humidity"]= $_GET["value2"] ;
	}
	$sJson =json_encode($dat);
	//d1
	$sFnm =$mConst->mDir . "/" . "device1" . $mConst->mExtName;
//	var_dump($sFnm );
	$current = $sJson;
	file_put_contents($sFnm , $current);
}
	
//d4
if(isset($_GET["value4"])){
	if(isset($_GET["value5"])){
		write_f4_proc( "device4", $_GET["value4"], $_GET["value5"]  );
	}else{
		write_f4_proc( "device4", $_GET["value4"], 0  );
	}
}
print("1");
?>