How to extract timestamp from MongoDB object - php

Question

In my php app, I do a db query that returns a bunch of documents from mongodb. As i'm looping through each document, i'm trying to extract the timestamp and display it as a Y-M-d h:i:s format. But I'm not even sure at this point how to extract it.
I'm testing with this code:
var_dump($value->playbook_run_date);
That outputs/ returns this:
object(MongoDB\BSON\UTCDateTime)#9 (1) {
["milliseconds"]=>
string(13) "1486277081000"
}
I've tried to change the code to look like this:
var_dump($value->playbook_run_date['milliseconds']);
But that returns the error:
Cannot use object of type MongoDB\BSON\UTCDateTime as array
I've been googling around for that error and have tried a few examples including:
var_dump($value->playbook_run_date->{'milliseconds'});
var_dump($value->playbook_run_date->1->{'milliseconds'});
var_dump($value->playbook_run_date[1]->{'milliseconds'});
But I can't seem to figure it out.
Any help would be appreciated.

Answer 1

I found the answer. http://php.net/manual/en/mongodb-bson-utcdatetime.todatetime.php
Code looks like this:
$temp = $value->playbook_run_date->toDateTime();
echo ("<td>".$temp->format('r') ."</td>");

Answer 2

Object properties with numerical names need to be referenced as a string surrounded by curly braces:
var_dump($value->playbook_run_date->{'1'}['milliseconds']); // If 'milliseconds is an array key
var_dump($value->playbook_run_date->{'1'}->milliseconds); // If milliseconds is an object property

Answer 3

try
$value->playbook_run_date->__toString();

Answer 4

var_dump($value->playbook_run_date);
That outputs/ returns this:
object(MongoDB\BSON\UTCDateTime)#9 (1) {
["milliseconds"]=>
string(13) "1486277081000"
}
You can try this:
//--first deserialize the MonogoDB date object
$playbook_run_date_unix_timestamp = $value->playbook_run_date->jsonSerialize()['$milliseconds'];
//--then you can work with the results any how you want
$playbook_run_date_datetime_format = date("Y-M-d h:i:s", ($playbook_run_date_unix_timestamp/1000) );