PHP Fatal error: Uncaught ReflectionException: Property date does not exist

Question

I have some script that worked before, and now I'm getting some errors. Somebody can help me find the mistake?

while ($value = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC)) {
                 
$m = $value['d'];
$o = new ReflectionObject($m);
$p = $o->getProperty('date');
echo "<tr>";
echo "<td>";
if ($value['BsDocEntry']) {
    $id = $value['BsDocEntry'];
    if (strtotime($value['d']->date) > strtotime('01.01.2016')) {
        $id += 383;

    }
} else {
    $id = $value['BaseEntry'];
    if (strtotime($value['d']->date) > strtotime('01.01.2016')) {
        $id += 138;

    }
}
echo $id;

and the error is:

PHP Fatal error:  Uncaught ReflectionException: Property date does not exist in C:\inetpub\wwwroot\serialtest.php:164

Stack trace:
#0 C:\inetpub\wwwroot\serialtest.php(164): ReflectionClass->getProperty('date')

#1 {main}
  thrown in C:\inetpub\wwwroot\serialtest.php on line 164