PHP DateTime microseconds always returns 0

Question

this code always returns 0 in PHP 5.2.5 for microseconds:

format(\"Y-m-d\\TH:i:s.u\") . \"\\n\";
?>
         


        

Answer 1

\DateTime::createFromFormat('U.u', microtime(true));

Will give you (at least on most systems):

object(DateTime)(
  'date' => '2015-03-09 17:27:39.456200',
  'timezone_type' => 3,
  'timezone' => 'Australia/Darwin'
)

But there is a loss of precision because of PHP float rounding. It's not truly microseconds.

Update

This is probably the best compromise of the createFromFormat() options, and provides full precision.

\DateTime::createFromFormat('0.u00 U', microtime());

gettimeofday()

More explicit, and maybe more robust. Solves the bug found by Xavi.

$time = gettimeofday(); 
\DateTime::createFromFormat('U.u', sprintf('%d.%06d', $time['sec'], $time['usec']));