Getting date format m-d-Y H i s u from milliseconds

Question

I am trying to get a formatted date  including the microseconds from a UNIX timestamp specified in milliseconds  The only problem is I keep getting 000000  e g   milliseconds   1375010774123   d   date  quot m-d-Y H i s u quot    milliseconds 1000   print  d    07-28-2013 11 26 14 000000

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As of PHP 7 1 you can simply do this    date   new DateTime   NOW     echo  date- gt format   m-d-Y H i s u       It will display as   04-11-2018 10 54 01 321688

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If you want to format a date like JavaScript s  new Date    toISOString   for some reason  this is how you can do it in PHP    now   microtime true   gmdate  Y-m-d TH i s    now  sprintf    03dZ  round   now-floor  now   1000      Sample output   2016-04-27T18 25 56 696Z     Just to prove that subtracting off the whole number doesn t reduce the accuracy of the decimal portion    gt  gt  gt  number format 123 01234567890123456789 25    gt   123 0123456789012408307826263   gt  gt  gt  number format 123 01234567890123456789-123 25    gt   0 0123456789012408307826263    PHP did round the decimal places  but it rounded them the same way in both cases

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Here is another method that I find slightly more elegant simple   echo date  Y-m-d-H i s    preg replace         i      microtime true

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I m use  echo date  Y-m-d H i s    gettimeofday    usec     output  2017-09-05 17 04 57 555036

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With PHP 7 0  now here you can do the following    dateString   substr  millseconds go here 0 10    drawDate   new  DateTime Date  Y-m-d H i   dateString     drawDate- gt setTimezone new  DateTimeZone  UTC       This does the following in order    Trims the last 4 zeros off the string so Date   can handle the date  Uses date to format the milliseconds into a date time string that DateTime can understand  DateTime   can then allow you to modify the time zone you are in  but ensure that date default timezone set  Timezone    is set before you use DateTime   functions and classes  It is good practice to use a constructor in your classes to make sure your in the correct timezone when DateTime   classes or functions are used

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echo date  m-d-Y H i s   substr fmod microtime true   1   1     example output   02-06-2019 16 45 03 53811192512512   If you have a need to limit the number of decimal places then the below line  credit mgutt  would be a good alternative   With the code below  the 6 limits the number of decimal places to 6    echo date  m-d-Y H i    sprintf   09 6f   date  s   fmod microtime true   1      example output   02-11-2019 15 33 03 624493

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This is based on answer from ArchCodeMonkey    But just simplified  if you just want something quick that works    function DateTime us utc        return DateTime  createFromFormat  U u   number format microtime true   6               function DateTime us         now   DateTime us utc        return  now- gt setTimeZone new DateTimeZone date default timezone get          So for me then    now   DateTime us     now- gt format  m-d-Y H i s u

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Here s a slightly shorter approach   Rather than work to create a high-precision numeric date time  I convert the microsecond value to a string  remove the 0  and add it to the end of the date time string   I can easily trim the number of decimals by adjusting the string length parameter  here I use 4 to get milliseconds  but you could use 7 to get microseconds    t   explode     microtime     echo date  m-d-y H i s   t 1   substr  string  t 0  1 4     For a microtime   value of 0 98236000 1407400573  this returns 08-07-14 01 08 13 982

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php net says      Microseconds  added in PHP 5 2 2   Note that date   will always generate 000000 since it takes an integer parameter  whereas DateTime  format   does support microseconds if DateTime was created with microseconds    So use as simple    micro date   microtime     date array   explode      micro date    date   date  Y-m-d H i s   date array 1    echo  Date   date      date array 0    lt br gt      Recommended and use dateTime   class from referenced     t   microtime true    micro   sprintf   06d    t - floor  t     1000000    d   new DateTime  date  Y-m-d H i s    micro   t      print  d- gt format  Y-m-d H i s u       note at point on  u    Note u is microseconds  1 seconds   1000000   s    Another example from php net     d2 new DateTime  2012-07-08 11 14 15 889342      Reference of dateTime   on php net  I ve answered on question as short and simplify to author  Please see for more information to author  getting date format m-d-Y H i s u from milliseconds

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Procedural  fineStamp   date  Y-m-d TH i s     substr microtime    1  9   echo  fineStamp   PHP EOL      Object-oriented  if you must   Still relies on  fineStamp though  -   d   new DateTime  fineStamp   echo  d- gt format  Y-m-d TH i s u     PHP EOL

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The documentation says the following      Microseconds  added in PHP 5 2 2   Note that date   will always   generate 000000 since it takes an integer parameter  whereas   DateTime  format   does support microseconds    I e   use DateTime instead

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I benched a few different ways   1  microtime   sscanf   date   sscanf microtime     0  6s00  s    usec   sec    date   date  Y-m-d H i s     sec     usec    I m not sure why microtime   returns 10 chars  0 dddddd00  for the microseconds part but maybe someone can tell me     start ts   microtime true   for  i   0   i  lt  10000000   i      sscanf microtime     0  6s00  s    usec   sec    date   date  Y-m-d H i s     sec     usec    var dump  microtime true  -  start ts  1000     ms    string 18   22372 335910797 ms     macOS PHP 5 6 30 string 18   16772 964000702 ms     Linux PHP 5 4 16 string 18   10382 229089737 ms     Linux PHP 7 3 11  same linux box as above    2  DateTime  createFromFormat   Datetime- format    now   new DateTime  NOW     date    now- gt format  Y-m-d H i s u      not working in PHP 5 x       start ts   microtime true   for  i   0   i  lt  10000000   i       now   new DateTime  NOW     date    now- gt format  Y-m-d H i s u      var dump  microtime true  -  start ts  1000     ms    string 18   45801 825046539 ms     macOS PHP 5 6 30  ms not working  string 18   21180 155038834 ms     Linux PHP 5 4 16  ms not working  string 18   11879 796028137 ms     Linux PHP 7 3 11  same linux box as above    3  gettimeofday   date    time   gettimeofday     date   date  Y-m-d H i s     time  sec       time  usec      -   start ts   microtime true   for  i   0   i  lt  10000000   i       time   gettimeofday     date   date  Y-m-d H i s     time  sec       time  usec      var dump  microtime true  -  start ts  1000     ms    string 18   23706 788063049 ms     macOS PHP 5 6 30 string 18   14984 534025192 ms     Linux PHP 5 4 16 string 18   7799 1390228271 ms     Linux PHP 7 3 11  same linux box as above    4  microtime   number format   DateTime  createFromFormat   DateTime- format    now   DateTime  createFromFormat  U u   number format microtime true   6              date    now- gt format  Y-m-d H i s u      -   start ts   microtime true   for  i   0   i  lt  10000000   i       now   DateTime  createFromFormat  U u   number format microtime true   6              date    now- gt format  Y-m-d H i s u      var dump  microtime true  -  start ts  1000     ms    string 18   83326 496124268 ms     macOS PHP 5 6 30 string 18   61982 603788376 ms     Linux PHP 5 4 16 string 16   19107 1870327 ms     Linux PHP 7 3 11  same linux box as above    5  microtime   sprintf   DateTime  createFromFormat   DateTime- format    now   DateTime  createFromFormat  U u   sprintf    6f   microtime true      date    now- gt format  Y-m-d H i s u      -   start ts   microtime true   for  i   0   i  lt  10000000   i       now   DateTime  createFromFormat  U u   sprintf    6f   microtime true      date    now- gt format  Y-m-d H i s u      var dump  microtime true  -  start ts  1000     ms    string 18   79387 331962585 ms     macOS PHP 5 6 30 string 18   60734 437942505 ms     Linux PHP 5 4 16 string 18   18594 941139221 ms     Linux PHP 7 3 11  same linux box as above

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You can readily do this this with the input format U u    now   DateTime  createFromFormat  U u   microtime true    echo  now- gt format  m-d-Y H i s u      This produces the following output   04-13-2015 05 56 22 082300   From the PHP manual page for date formats    U   Seconds since the Unix Epoch u   Microseconds   http   php net manual en function date php    Thanks goes to giggsey for pointing out a flaw in my original answer  adding number format   to the line should fix the case of the exact second  Too bad it doesn t feel quite as elegant any more      now   DateTime  createFromFormat  U u   number format microtime true   6               http   php net manual en function number-format php    A note on time zones in response to DaVe   Normally the createFromFormat   method will use the local time zone if one is not specified   http   php net manual en datetime createfromformat php  However  the technique described here is initialising the DateTime object using microtime   which returns the number of seconds elapsed since the Unix Epoch  01 Jan 1970 00 00 00 GMT    http   php net manual en function microtime php  This means that the DateTime object is implicitly initialised to UTC  which is fine for server internal tasks that just want to track elapsed time   If you need to display the time for a particular time zone then you need to set it accordingly  However  this should be done as a separate step after the initialisation  not using the third parameter of createFromFormat    because of the reasons discussed above   The setTimeZone   method can be used to accomplish this requirement   http   php net manual en datetime settimezone php  As an example    now   DateTime  createFromFormat  U u   number format microtime true   6             echo  now- gt format  m-d-Y H i s u       lt br gt      local    now- gt setTimeZone new DateTimeZone  Australia Canberra     echo  local- gt format  m-d-Y H i s u       lt br gt      Produces the following output   10-29-2015 00 40 09 433818 10-29-2015 11 40 09 433818     Note that if you want to input into mysql  the time format needs to be   format  Y-m-d H i s u

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For PHP 8 0  The bug has been recently fixed and now you can use UNIX timestamps with a fractional part   milliseconds   1375010774123    d   new DateTime        milliseconds 1000    print  d- gt format  quot m-d-Y H i s u quot     Output   07-28-2013 11 26 14 123000  For PHP  lt  8 0 You need to specify the format of your UNIX timestamp before you can use it in the DateTime object  As noted in other answers  you can simply work around this bug by using createFromFormat   and number format    milliseconds   1375010774123    d   DateTime  createFromFormat  U v   number format  milliseconds 1000  3             print  d- gt format  quot m-d-Y H i s u quot     Output   07-28-2013 11 26 14 123000  For PHP  lt  7 3 If you are still using PHP older than 7 3 you can replace U v with U u  It will not make any difference  but the millisecond format identifier is present only since PHP 7 3   milliseconds   1375010774123                                     V - Use microseconds instead of milliseconds  d   DateTime  createFromFormat  U u   number format  milliseconds 1000  3             print  d- gt format  quot m-d-Y H i s u quot     Output   07-28-2013 11 26 14 123000

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Based on  ArchCodeMonkey answer   If you have declare strict types 1  you must cast second argument to string

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if you are using Carbon  you can use the defined spec  RFC3339 EXTENDED   or customize it   Carbon  RFC3339 EXTENDED    Y-m-d TH i s vP

[php] Getting date format m-d-Y H:i:s.u from milliseconds

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