PHP strtotime and JavaScript Date.parse return different timestamps

Question

I am getting same date time seconds value in JavaScript which is given by strtotime() in PHP. But i need same value in JavaScript.

PHP Code

echo strtotime("2011-01-26 13:51:50");
// 1296046310

JavaScript Code

var d = Date.parse("2011-01-26 13:51:50");
console.log(d);
// 1296030110000

Answer 1

You need to use the same time-zone for a sane comparison:

echo strtotime("2011-01-26 13:51:50 GMT");
// 1296049910

var d = Date.parse("2011-01-26 13:51:50 GMT") / 1000;
console.log(d);
// 1296049910

Update

According to the standard, only RFC 2822 formatted dates are well supported:

Date.parse("Wed, 26 Jan 2011 13:51:50 +0000") / 1000

To generate such a date, you can use gmdate('r') in PHP:

echo gmdate('r', 1296049910);

Answer 2

JavaScript uses milliseconds as a timestamp, whereas PHP uses seconds. As a result, you get very different dates, as it is off by a factor 1000.

sample

echo date('Y-m-d', TIMESTAMP / 1000);

Comment Response

<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript">

    function toTimestamp(year,month,day,hour,minute,second)
    {
        var datum = new Date(Date.UTC(year,month-1,day,hour,minute,second));
        return datum.getTime()/1000;
    }

    $(function()
    {
        console.log(toTimestamp(2011,01,26,13,51,50));

    });

</script>

<?php

echo $the_date = strtotime("2011-01-26 13:51:50");