Unix Time Stamp and JavaScript Time; too big!

Question

Hi there,

I'm using the flot graphing library for jQuery, and it uses javascript time for any time series (to remind, that's milliseconds since Jan 1970. Unix time is seconds).

My current code looks like this:

foreach($decoded['results'] as $currentResult) {
      if($currentResult['from_user'] == $user) {
          $strippedTexts = $currentResult['created_at'];
          $dates []= strtotime($strippedTexts);
      }
 }

This gives me an array of Unix time stamps. I want to prep the data for JavaScript in the loop, but when I try

$dates []= 1000*strtotime($strippedTexts);

the number is too big and it spits out "[-2147483648]". Do I need to change the "type" of variable allowed to be held in the array to bignum or something?

Thanks!

Answer 1

You can try using the BCMath Arbitrary Precision functions if you have them available:

$dates[] = bcmul("1000", strtotime($strippedTexts));

Or just, you know, append three zeros on the end.

$dates[] = strtotime($strippedTexts).'000';

In both cases you'll end up with the value being stored as a string, but that shouldn't matter for your usage.

Answer 2

Try this:

$dates []= 1000.0*strtotime($strippedTexts);

That will turn it into float, which in php can store a bigger number than an int.

Answer 3

No solution is required, because there is no problem: have JavaScript do the multiplication.