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<?php
header ("Access-Control-Allow-Origin: *");
header("Content-type: application/json");
$method = $_SERVER ['REQUEST_METHOD'];
if ($method == "OPTIONS") {
die ();
}
session_start();
$link = mysql_connect ("localhost", "root", "root123");
mysql_select_db ("vpa");
$date_from = date('Y-m-d H:i:s', strtotime('-5 days'));
$sql = "SELECT * FROM SENSORVALUES WHERE NOT SENSORNAME = '' AND time >= '".$date_from."' ORDER BY SENSORNAME, time DESC";
$result = mysql_query($sql);
$JSON = "{";
$x=0;
$sensorname_old = "";
//{"NAME1":[{"time":"2021-11-16 18:10:01","temp":22,"humidity":33.5,"dewpoint":5.2,"dewdiff":16.8,"pressure":1009 },{"time":"2021-11-16 18:00:01","temp":22,"humidity":33.7,"dewpoint":5.3,"dewdiff":16.7,"pressure":1009 }],"NAME2":[{"time":"2021-11-16 18:10:01","temp":22,"humidity":33.5,"dewpoint":5.2,"dewdiff":16.8,"pressure":1009 },{"time":"2021-11-16 18:00:01","temp":22,"humidity":33.7,"dewpoint":5.3,"dewdiff":16.7,"pressure":1009 }]}
while ($row = mysql_fetch_assoc($result)){
$id = $row['SENSORVALUESID'];
$sensorname = $row['SENSORNAME'];
if( $row['time'] != ""){
if($sensorname_old != $sensorname){
if($x > 0){
$JSON = substr($JSON, 0, -1);
$JSON .= '],';
}
$JSON .= '"'.$sensorname.'":[';
$sensorname_old = $sensorname;
$x++;
}
$time = $row['time'];
$temp = $row['temp'];
$humidity = $row['humidity'];
$dewpoint = $row['dewpoint'];
$dewdiff = $row['dewdiff'];
$pressure = $row['pressure'];
if($temp == ""){$temp = 0;}
if($humidity == ""){$humidity = 0;}
if($dewpoint == ""){$dewpoint = 0;}
if($dewdiff == ""){$dewdiff = 0;}
if($pressure == ""){$pressure = 0;}
$description = iconv("ISO-8859-1//IGNORE","UTF-8", $row['description']);
$jsonobj = '{"time":"'.$time.'","description":"'.$description.'","temp":'.$temp.',"humidity":'.$humidity.',"dewpoint":'.$dewpoint.',"dewdiff":'.$dewdiff.',"pressure":'.$pressure.'},';
$JSON .= $jsonobj ;
}
}
$JSON = substr($JSON, 0, -1);
$JSON .= ']}';
//var_dump(json_decode($JSON,true));
echo(json_encode(json_decode($JSON,true)));
?>