Hướng dẫn php strtotime milliseconds

I have date format like '25 May 2016 10:45:53:567'.

I want to convert into the time stamp.

strtotime function returns empty.

$date = '25 May 2016 10:45:53:567';
echo strtotime($date); 
// returns empty

When I removed the milliseconds, it's working.

$date = '25 May 2016 10:45:53';
echo strtotime($date);
// returns 1464153353

Please sort out my issue. Thanks in advance.

asked May 28, 2016 at 10:02

TamilvananTamilvanan

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6

Use DateTime:

$date = DateTime::createFromFormat('d M Y H:i:s:u', '25 May 2016 10:45:53:000');
echo $date->getTimestamp();
// 1464165953

// With microseconds
echo $date->getTimestamp().'.'.$date->format('u');
// 1464165953.000000

answered May 28, 2016 at 10:11

PytonPyton

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3

Split string:

$date = '25 May 2016 10:45:53:001';
preg_match('/^(.+):(\d+)$/i', $date, $matches);
echo 'timestamp: ' . strtotime($matches[1]) . PHP_EOL;
echo 'milliseconds: ' . $matches[2] . PHP_EOL;
// timestamp: 1464162353 
// milliseconds: 001 

answered May 28, 2016 at 10:21

2

Use Datetime instead of date and strtotime.

//using date and strtotime
$date = '25 May 2016 10:45:53:000';
echo "Using date and strtotime: ".date("Y-m-d H:i:s.u", strtotime($date)); 

echo "\n";\

//using DateTime
$date = new DateTime();
$date->createFromFormat('d M Y H:i:s.u', '25 May 2016 10:45:53:000');
echo "Using DateTime: ".$date->format("Y-m-d H:i:s.u"); 
// since you want timestamp
echo $date->getTimestamp();
// Output
// Using date and strtotime: 1969-12-31 16:00:00.000000
// Using DateTime: 2016-05-28 03:25:22.000000

Example

answered May 28, 2016 at 10:24

I want to get a difference between two dates in Php in milliseconds, How can I do this? I tried with the following code but not working for me, I am getting the result in seconds, how can I convert to milliseconds? Here is my code.

$expiration_time=$row['time'];
$date = date('Y-m-d H:i:s');
$date1 = strtotime($expiration_time);  
$date2 = strtotime($date);  
echo $diff = abs($date2 - $date1);

Waqas Ahmad

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asked Apr 10, 2019 at 12:17

1

$milliseconds = strtotime($date) * 1000;

Just multiply it by 1000.

Although I do prefer to use:

$milliseconds = round(microtime(true) * 1000);

answered Apr 10, 2019 at 12:20

LulceltechLulceltech

1,6529 silver badges21 bronze badges

2

You can use createFromFormat method of DateTime or, better, DateTimeImmutable while passing timezone as third parameter. This way you do not need to rely on default timezone, which is never a good idea

$datetime = DateTimeImmutable::createFromFormat('Y-m-d H:i', '2016-03-22 14:30', new DateTimeZone('Australia/Sydney'));
echo $datetime->getTimestamp();
echo $datetime->format(DateTime::ISO8601);

You can also convert it to another timezone, note that it produced new DateTimeImmutable and original left untouched:

echo $utcTzDatetime = $date->setTimezone(new DateTimeZone('UTC'));
echo $utcTzDatetime->format(DateTime::ISO8601);
echo $datetime->format(DateTime::ISO8601);

Upd:

If format is not fixed, you can let DateTime guess it:

new DateTimeImmutable($time, new DateTimeZone('Australia/Sydney'));

But be aware that if $time string contains timezone or offset, eg '2016-03-22T14:30-0500', it will have priority over timezone parameter and will result in different timestamp!

Hàm microtime() sẽ lấy timestamp của thời điểm hiện tại bao gồm cả microseconds.

Bài viết này được đăng tại freetuts.net, không được copy dưới mọi hình thức.

Cú pháp

Cú pháp: microtime( $is_float);

Trong đó: 

• $is_float là tham số. Nếu mang giá trị TRUE hàm sẽ trả về số thuộc kiểu float, nếu không truyền hoặc mang giá trị FALSE, hàm sẽ chả về chuỗi theo dạng" microseconds second".

Kết quả trả về

Hàm sẽ trả về một chuỗi theo dạng "microseconds second" hoặc trả về số thuộc kiểu float tùy thuộc vào tham số truyền vào.

Bài viết này được đăng tại [free tuts .net]

Ví dụ

Ví dụ đơn giản về hàm microtime():

Code

echo microtime() . "<br />";
echo microtime(true);

Kết quả

0.64058100 1493918735
1493918735.6406

Tham khảo: php.net

<?php

   $date_array = getdate();

   

   foreach ( $date_array as $key => $val ){

      print "$key = $val<br />";

   }

   $formated_date  = "Today's date: ";

   $formated_date .= $date_array['mday'] . "/";

   $formated_date .= $date_array['mon'] . "/";

   $formated_date .= $date_array['year'];

   

   print $formated_date;

?>

seconds = 10

minutes = 29

hours = 9

mday = 5

wday = 1

mon = 12

year = 2016

yday = 339

weekday = Monday

month = December

0 = 1480930150

Today's date: 5/12/2016

date(format,timestamp)

<?php

   print date("m/d/y G.i:s<br>", time());

   echo "<br>";

   print "Today is ";

   print date("j of F Y, \a\\t g.i a", time());

?>

12/05/16 9:29:47

Today is 5 2016f December 2016 at 9:29 am