How to get all serial from database and send back by JSON - php

Question

I want all serialNo from registration table and then send it back to device. I try this:
date_default_timezone_set ('Asia/Phnom_Penh');
// Create a header with the current time
header('Last-Modified: ' . date("D, d M Y H:i:s", time()) . ' GMT+7');
$query1 = mysql_query("select serialNo from registration");
$row = mysql_fetch_array($query1);
$serialsArray = Array($row['serialNo']);
$tag = '';
if(!empty($_GET['passesUpadatedSince'])){
$tag = strtotime($_GET['passesUpadatedSince']);
error_log('Tag: ' .$tag,0);
}
$query1 = mysql_query("select MAX(updateTag) as updateTag from digiCardPass");
$row1 = mysql_fetch_array($query1);
$updateTag = $row1['updateTag'];
error_log("get serial method");
//if (!empty($serialsArray) && $updateTag != $tag) {
if (!empty($serialsArray)) {
echo json_encode(array('lastUpdated' => (string)time(),
'serialNumbers' => $serialsArray));
}else {
response(204);
}
}
?>
But when I send serial, I see only 1 serial. This is the result: May 7 17:01:05 ML-iphone-5 passd[4234] <Warning>: Get serial numbers task completed with update tag 1367920864, serial numbers (
1
)
How can I get all serial ?

Answer 1

You should be using mysqli as the mysql_* is deprecated, but anyway...
You only see one result because you use:
$row1 = mysql_fetch_array($query1);
$updateTag = $row1['updateTag'];
You need something like this:
while ($row = mysql_fetch_row($query1))
{
// do something sensible with each one here
echo $row['updateTag'];
}

Answer 2

Because each device has own deviceID, so I just change : $query1 = mysql_query("select serialNo from registration where deviceID = '$deviceID'");
and now everything works like what I want !