point wrote:
>
> hm..interesting...
>
> thanx fo rthat...
>
> "Michael Wilcox" <mjwilcoCANTHAVESPAM@yahoo.com> wrote in message
> news:i07Ab.703$7p2.518@newsread2.news.atl.earthlin k.net...
> > point <point@caanNOproductionSPAM.com> wrote:
> > > Thanx guys...
> > >
> > > I went for the Shawn's solution....nice one :)
> >
> > Shawn's solution, while valid, can be heavy on server resources and take
> > longer. strtotime() does just what you want and returns the timestamp,
> which
> > can be used with date()
> > --
> > Michael Wilcox


Actually, I tested the three solutions presented (mine, Justin's, and Kelv's).
Mine was the fastest by a significant amount. I think, probably because you have
the search in strtotime(). I would use strtotime() only if you want a timestamp
as the final result (ie. for storing in a database). With that said, with any
solution it took 1/3 to 1/2 second to convert 10,000 dates. So if you're only
doing a few you shouldn't notice any difference.

The test was run over 10,000 randomly generated date strings, in the format that
Point mentioned. The results were:

Shawn's preg() - 0.31105196475983 seconds
Kelv's date() - 0.41387701034546 seconds
Justin's date() - 0.44852697849274 seconds

I ran it a number of times. I changed the order around a bunch of times and in
each case the results were similar to that shown above. The code is below if
anyone sees a problem with it, let me know. Note: I did this to satisfy my own
curiosity, not to be a prick about my solution being critiqued :o)

Regards,
Shawn

<?PHP

function getmicrotime(){
list($usec, $sec) = explode(" ",microtime());
return ((float)$usec + (float)$sec);
}

$arrDates = array();

for ($i = 0; $i < 10000; ++$i) {
array_push($arrDates, strftime("%Y-%m-%d %H:%M:%S.".rand(0,9),
rand(0,time())));
}


$time_start = getmicrotime();
$date = "";
foreach ($arrDates as $var)
$date = date('d-m-Y H:i:s',strtotime(substr($var,0,strpos($var,'.')))) ;

$time_end = getmicrotime();
$time = $time_end - $time_start;

echo "<br><Br>Justin's date() - $time seconds";





$time_start = getmicrotime();
$date = "";
foreach ($arrDates as $var)
$date = date("d-m-Y H:i:s",strtotime(substr($var,0,19)));

$time_end = getmicrotime();
$time = $time_end - $time_start;

echo "<br><Br>Kelv's date() - $time seconds";





$time_start = getmicrotime();
$date = "";
foreach ($arrDates as $var)
$date = preg_replace("/^(\d+)-(\d+)-(\d+) (\d+:\d+:\d+)(\.\d*)?$/",
"\$3-\$2-\$1 \$4, ", $var);
$time_end = getmicrotime();
$time = $time_end - $time_start;

echo "<br><Br>Shawn's preg() - $time seconds";

?>
--
Shawn Wilson
shawn@glassgiant.com
http://www.glassgiant.com