CODEWITHSUNDEEP
phpjavascriptdatedatetimetimestamp
Naresh
Naresh

Reputation: 2781

PHP strtotime and JavaScript Date.parse return different timestamps

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

Upvotes: 21

Views: 37794

Answers (3)

Salman Arshad
Salman Arshad

Reputation: 272096

strtotime() and Date.parse() yield UNIX timestamps with a resolution of seconds and milliseconds respectively. However, if timezone information is missing from the input string, local time is assumed. So the input string 2011-01-26T13:51:50 may produce different output on different machines even if PHP (or JavaScript) is used to generate the timestamps on both machines.

The solution is to explicitly specify the timezone in the strings. This should produce the same result on any machine:

Date.parse("Jan 26, 2011 13:51:50 GMT+0500") / 1000; // 1296031910
strtotime("Jan 26, 2011 13:51:50 GMT+0500");         // 1296031910

Upvotes: 3

Dipesh Parmar
Dipesh Parmar

Reputation: 27364

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");

Upvotes: 4

Ja͢ck
Ja͢ck

Reputation: 173552

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);

Upvotes: 25

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