Sending data by email formatted into a HTML table [closed] - php

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I am trying to put the contents of an array into a table that can be used with PHP mail.
My code returns data from MySQL database and then gets called by another script to display the results.
I then need to insert the same data into a html table and send the tables and data in an email. The issue is when the email is sent
the only content in the email are the table headers, no data. Can anyone see why the data is not included in the email table?
$sql = "SELECT deviceType,deviceTypeCode,deviceDesc,deviceID, DeviceID19, DeviceLocation FROM FIDS_Hardware WHERE hotelid = '".$_SESSION['_amember_user']['hotelid']."' AND messageCount = 2";
$res = mysqli_query($conn, $sql) or die("Error: ".mysqli_error($conn));
$TotalRows_res = mysqli_num_rows($res);
$data = array();
while($row = mysqli_fetch_array($res)){
$DeviceDescription = $row['deviceDesc'];
$DeviceType = $row['deviceType'];
$DeviceTypeCode = $row['deviceTypeCode'];
$DeviceRefNo = $row['deviceID'];
$DeviceID19 = $row['DeviceID19'];
$DeviceLocation = $row['DeviceLocation'];
if($DeviceTypeCode == 5){
$DeviceRefNo = $DeviceRefNo;
} else {
$DeviceRefNo = $DeviceID19;
}
$data[] = array(
"DeviceDescription" => $DeviceDescription,
"DeviceType" => $DeviceType,
"DeviceRefNo" => $DeviceRefNo,
"DeviceLocation" => $DeviceLocation,
"TotalRows" => $TotalRows_res);
}
echo json_encode($data); // DATA DISPLAYED ON IN ANOTHER SCRIP[T
$subject = "Advisory:";
$to = $_SESSION['AdminEmail'];
$newOffline = array();
foreach($data as $data1){
$newOffline[] = implode(', ', $data1);
}
$newOffline = implode(" \n<br>", $newOffline);
$offline = $newOffline;
//Headers
$headers = "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/html; charset=UTF-8\r\n";
$headers = "From: <support#mydomain.com>" . "\r\n" .
mail($to, $subject,$offline, $headers);
/* ALL OF THE ABOVE WORKS AND SEND DATA WHICH LOOKS LIKE THIS
EXBHX-Baskerville, Conference, 3, , 9
EXBHX-Bolton, Conference, 1, Conference centre, 9
EXBHX-Watt, Conference, 2, , 9
EXBHX-Brindley, Conference, 4, , 9
EXBHX-Cadbury, Conference, 5, , 9
EXBHX-Aston, Conference, 6, , 9
EXBHX-Main reception No2, Conference, WF2, Main reception, 9
EXBHX-Main reception No3, Conference, WF3, Conference centre, 9
EXBHX-Depart, Flightboard, WF6, Main reception, 9
*/
/* THIS IS THE TABLE I AM TRYING TO WORK WITH
$offline = '
echo "<tr><th>Description</th><th>Type</th><th>Device ID</th><th>Location</th></tr>";
foreach($data as $data1){
$newOffline[] = implode(', ', $data1);
$description = $newOffline[0];
$type = $newOffline[1];
$deviceid = $newOffline[2];
$location = $newOffline[3];
echo "<tr>";
echo " <td>"; echo $description; echo "</td>";
echo " <td>"; echo $type; echo "</td>";
echo " <td>"; echo $deviceid; echo "</td>";
echo " <td>"; echo $location; echo "</td>";
echo "</tr>";
}
'
;
*/
//Headers
$headers = "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/html; charset=UTF-8\r\n";
$headers = "From: <support#mydomain.com>" . "\r\n" .
mail($to, $subject,$offline, $headers);