GETDEMO.PHP

<?php

//Creates new record as per request
    //Connect to database
    $servername = "localhost";
    $username = "root";
    $password = "";
    $dbname = "mvclogin";

    // Create connection
    $conn = new mysqli($servername,$username,$password,$dbname);
//get date
    date_default_timezone_set('Asia/Manila');
    $d = date('Y-m-d');
    //echo " Date:".$d."<BR>";
//get time
    $t = date('H:i:s');

    echo "connection"; //for checking

    if(!empty($_GET['temperature']) && !empty($_GET['glucoselevel']) && !empty($_GET['oxygenlevel']) && !empty($_GET['bloodpressure']) && !empty($_GET['heartrate'])&& !empty($_GET['identifier']))
    {
       echo "if"; //for checking
        $temp = $_GET['temperature'];
        $gl = $_GET['glucoselevel'];
        $ol = $_GET['oxygenlevel'];
        $bp = $_GET['bloodpressure'];
        $hr = $_GET['heartrate'];
        $identifier = $_GET['identifier'];
        //insert to data database
        $sql = "INSERT INTO data (temperature, glucoselevel, oxygenlevel, bloodpressure, heartrate, Date, Time, identifier)

        VALUES ('".$temp."', '".$gl."', '".$ol."', '".$bp."', '".$hr."', '".$d."', '".$t."', '".$identifier."')";


          if ($conn->query($sql) === TRUE) {
            echo "OK"; //serial print ok
        } else {
            echo "Error: " . $sql . "<br>" . $conn->error; //serial print error
        }

        mysqli_close($conn);
    }