<?php
ini_set('display_errors', 1); error_reporting(-1);

$servername="localhost";
$username="root";
$password="root123";
$dbname="KP1db";

$bateriaa=15;
$czujnik_1=0;
$czujnik_2=0;

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully";
}
catch(PDOException $e){
    echo "Connection failed: " . $e->getMessage();
}

try {
    $sql = "SELECT * FROM dane2 ORDER BY lp DESC LIMIT 1";
    $row= $conn->query($sql);
    echo "Dane zostaly pobrane";
}
catch(PDOException $e){
    echo $sql . "<br>" . $e->getMessage();
}

json_encode($row);
?>



---JS
setInterval(function(){
    &.getJSON("get.php",function(result){
        console.log(result);
    });
}, 1/30 * 1000);