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

This has worked for me and is a simple three-liner:

function udate($format='Y-m-d H:i:s.', $microtime=NULL) {
    if(NULL === $microtime) $microtime = microtime();
    list($microseconds,$unix_time) = explode(' ', $microtime);
    return date($format,$unix_time) . array_pop(explode('.',$microseconds));
}

This, by default (no params supplied) will return a string in this format for the current microsecond it was called:

YYYY-MM-DD HH:MM:SS.UUUUUUUU

An even simpler/faster one (albeit, with only half the precision) would be as follows:

function udate($format='Y-m-d H:i:s.', $microtime=NULL) {
    if(NULL === $microtime) $microtime = microtime(true);
    list($unix_time,$microseconds) = explode('.', $microtime);
    return date($format,$unix_time) . $microseconds;
}

This one would print out in the following format:

YYYY-MM-DD HH:MM:SS.UUUU