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$sql = "SELECT sensorid,switch,cmd FROM switches where sensorid = 4";

if ($result = $conn->query($sql)) {
    while ($row = $result->fetch_assoc()) {
        $row_sensorid = $row["sensorid"];
        $row_switch = $row["switch"];
        $row_cmd = $row["cmd"];
        if ($row["cmd"]==0){
            $switch_status="off";
        }
        else{
            $switch_status="on";
        }
        echo "The switch: (".$row_switch.") at the coordinate: (".$row_sensorid.") current status is ".$switch_status.".\\n";
    }
    $result->free();
}
else{
    echo "\\n No corresponding switch was found!\\n";
}

$conn->close();