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- <?php
- $conn= mysqli_connect( $dbhost, $dbuser, $dbpass, $db );
- if ($conn->connect_error) {
- die("Connection failed: " . $conn->connect_error);
- }
- $sql = "SELECT Date, Voltage, Current FROM DataTable WHERE ID='A' ORDER BY Date DESC";
- $result = $conn->query($sql);
- //$i is used to assign serial number for each row
- $i=1;
- if ($result->num_rows > 0) {
- while($row = $result->fetch_assoc()) {
- echo "<form action = 'samepage.php' method =get>";
- echo "<tr>
- <td>" . $i. "</td>
- <td>" . $row["Time"]. "</td>
- <td>" . $row["Voltage"] . "</td>
- <td>" . $row["Current"]. "</td>
- <td>"." <input type=hidden name=serialSelected value =" . $i."</td>
- <td>"." <input type=submit name=Submit value=select >"." </td>
- </tr>";
- $i++;
- echo "</form>";
- }
- echo "</table>";
- } else { echo "0 results"; }
- $avgCurrent=0;
- $avgVoltage=0;
- if(isset ($_GET['serialSelected'])){
- //how to choose the value selected and the previous 4 values (total 5 values for avg calculation)
- }
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