Delicious Bookmark this on Delicious Share on Facebook SlashdotSlashdot It! Digg! Digg



PHP : Function Reference : Date and Time Functions : gettimeofday

gettimeofday

Get current time (PHP 4, PHP 5)
mixed gettimeofday ( [bool return_float] )

This is an interface to gettimeofday(2). It returns an associative array containing the data returned from the system call.

Parameters

return_float

When set to TRUE, a float instead of an array is returned.

Return Values

By default an array is returned. If return_float is set, then a float is returned.

Array keys:

  • "sec" - seconds since the Unix Epoch
  • "usec" - microseconds
  • "minuteswest" - minutes west of Greenwich
  • "dsttime" - type of dst correction

ChangeLog

Version Description
5.1.0 The return_float parameter was added.

Examples

Example 450. gettimeofday() example

<?php
print_r
(gettimeofday());

echo
gettimeofday(true);
?>

The above example will output something similar to:

Array
(
   [sec] => 1073504408
   [usec] => 238215
   [minuteswest] => 0
   [dsttime] => 1
)

1073504408.23910


Code Examples / Notes » gettimeofday

middleto

The types of DST correction (from sys/time.h on a Linux system):
0     Not on DST
1     USA DST
2     Austrailian DST
3     Western European DST
4     Middle European DST
5     Eastern European DST
6     Canada DST
7     Great Britain and Eire DST
8     Rumania DST
9     Turkey
10     Australian DST (with shift in 1986)


void0 the dog yandex.ru

do you realy think that convertion to String and back to float can be fast??
this function runs 10 times faster than utime() :
function fastUtime()
{
 $t = gettimeofday();
 return (float) ($t['sec'] + $t['usec'] / 1000000.0);
}


lucas dot karisny

A small improvement on getTimer.  Using vsprintf instead of sprintf there is no need to assign the array:
<?php
function utime()
{
 return (float) (vsprintf('%d.%06d', gettimeofday()));
}
?>
In a test on my machine getTimer took 0.037519 seconds to run through 1000 iterations versus 0.027912 seconds for utime.  In total, utime runs about 25% quicker.  The use is negligible in an actual benchmarking scenario, but this could provide a slightly more accurate estimate.  Of course the time it takes to run the function could always be stored at the start and subtracted from your total value each time it is run.


Change Language


Follow Navioo On Twitter
checkdate
date_create
date_date_set
date_default_timezone_get
date_default_timezone_set
date_format
date_isodate_set
date_modify
date_offset_get
date_parse
date_sun_info
date_sunrise
date_sunset
date_time_set
date_timezone_get
date_timezone_set
date
getdate
gettimeofday
gmdate
gmmktime
gmstrftime
idate
localtime
microtime
mktime
strftime
strptime
strtotime
time
timezone_abbreviations_list
timezone_identifiers_list
timezone_name_from_abbr
timezone_name_get
timezone_offset_get
timezone_open
timezone_transitions_get
eXTReMe Tracker