php get current timestamp
Функции временных меток PHP
PHP предоставляет несколько функций для выполнения операций с временными данными. В этой статье мы рассмотрим функции временных меток PHP.
Временная метка — это значение, представленное в секундах, которое рассчитывается с начала эпохи UNIX, 1 января 1970 года.
В этой статье мы рассмотрим, как с помощью PHP-функций даты и времени, связанных с временными метками:
Получение текущей временной метки в PHP
Текущее значение временной метки можно получить тремя способами.
Это функция PHP для получения текущего значения временной метки. Она не принимает никаких аргументов. Пример использования:
StrToTime ()
Функция предназначена для получения метки времени из заданной строки, представляющей собой значение даты. Например, “Tuesday last week”, “+1 week”, “21 November 2008” и т. д.
Для получения текущей временной метки нужно передать функции значение “now”:
При вызове strtotime() с переданными некорректными данными, которые не поддерживаются PHP, а функция вернет значение false.
mktime()
Используется для получения метки времени UNIX. Функция принимает набор параметров, обозначающих час, минуты, секунды, месяц, день и год. А также дополнительный флаг, представляющий состояние летнего времени.
Чтобы получить текущую временную метку, в качестве параметра функции передается date() с соответствующими значениями. Например:
microtime()
Описанные выше функции PHP возвращают только десятизначное значение. Но microtime() возвращает количество секунд и микросекунд, прошедших с начала эпохи UNIX.
Преобразование даты и времени в метку
Функции strtotime() и mktime() также используются для преобразования указанной даты в формат временной метки.
Функции strtotime() нужно передать дату в любом из поддерживаемых PHP форматов. Например, dd / mm / yyyy, mm / dd / yyyy и т. д. Чтобы использовать mktime(), нужно разложить дату и отправить ее компоненты в эту функцию.
Также можно преобразовать значение метки времени в дату, используя функцию date(). Для этого необходимо передать требуемый формат даты в качестве первого параметра и временную метку в качестве второго. Например:
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PHP Timestamp
PHP provides several date time functions to perform required operations with temporal data. Now, we are going to see about PHP timestamp functions. The timestamp is the value represented as seconds calculated, since UNIX Epoch, January 1, 1970, and also called as UNIX timestamp.
In PHP, it includes several functions to work with a timestamp. In this article, we are going to see about how the following list of timestamp related functionalities is obtained by using PHP date time functions.
Getting Current Timestamp in PHP
We can get current timestamp value in three possible ways with the help of PHP core functions described here.
This is the simple and widely used PHP function to get current timestamp value. It requires no arguments to be sent for returning expected resultant UNIX timestamp. The usage of this simple function is shown in the example PHP program below.
strtotime()
This function is mainly used to get timestamp value from the given string representing date value. PHP provides a list of supported strings to be passed as an argument of this function to denote date values. For example, “Tuesday last week”, “+1 week”, “21 November 2008” and etc.
similarly, for getting current timestamp value, we need to provide the string as “now” representing current date and time value. So, the code will be as follows.
While invoking strtotime() by passing improper string data which is not supported by PHP, this function will return false.
mktime()
This function is also used to get UNIX timestamp but requires set of parameters denoting date components, like an hour, minute, second, month, day, year, in the same order specified here. And also have an optional flag representing daylight saving time state.
And for getting, the current timestamp, we have to use the PHP date() function within this function, with the corresponding parameter for getting the current hour, minute, in required order. For example,
microtime()
All the above PHP timestamp functions will return only the 10 digit timestamp value. But, while executing microtime() function, it will return the number of second elapsed since, UNIX Epoch, and also, the number of microseconds elapsed since seconds value returned by this function.
PHP supports several date format characters denoting components of the date value. So, we can use these list of date formatting characters to get date components or to format date if required, using given temporal data.
From the list of those string, U denotes UNIX timestamp value. So, for date() function, we should specify U as an argument to get current timestamp value. For example,
Date/Time to Timestamp Conversion
strtotime() and mktime() functions are also used to convert specified date into the form of a timestamp.
For using strtotime(), we need to pass the date with any one of PHP supported date format, for example, dd/mm/yyyy, mm/dd/yyyy and etc. And, for using mktime(), we need to explode the given date and send the exploded components to this function.
And, we can perform the reverse, that is, converting timestamp value to date, by the use of date() function. For that, we should specify the required date format as the first parameter, and timestamp as the second one. For example,
Note:
Comments to “PHP Timestamp”
Great article. I really appreciate your help that’s really exactly what I was looking for, thank’s for that!
Php get current timestamp
(PHP 4, PHP 5, PHP 7, PHP 8)
time — Return current Unix timestamp
Description
Returns the current time measured in the number of seconds since the Unix Epoch (January 1 1970 00:00:00 GMT).
Parameters
This function has no parameters.
Return Values
Returns the current timestamp.
Examples
Example #1 time() example
The above example will output something similar to:
Notes
See Also
User Contributed Notes 21 notes
The documentation should have this info. The function time() returns always timestamp that is timezone independent (=UTC).
Two quick approaches to getting the time elapsed in human readable form.
$nowtime = time ();
$oldtime = 1335939007 ;
/** Output:
time_elapsed_A: 6d 15h 48m 19s
time_elapsed_B: 6 days 15 hours 48 minutes and 19 seconds ago.
**/
?>
A time difference function that outputs the time passed in facebook’s style: 1 day ago, or 4 months ago. I took andrew dot macrobert at gmail dot com function and tweaked it a bit. On a strict enviroment it was throwing errors, plus I needed it to calculate the difference in time between a past date and a future date.
Argument order (begin date, end date) doesn’t matter.
I needed to convert between Unix timestamps and Windows/AD timestamps, so I wrote a pair of simple functions for it.
Below, a function to create TNG-style stardates, taking 2009 to start stardate 41000.0. In fact, the offset is trivial to adjust if you wish to begin from a different date.
Here’s a snippet of code that demonstrates the difference:
// Find the next second
$nextSecond = time () + 1 ;
// TIME: 1525735820 uTIME: 1525735820.997716
// TIME: 1525735820 uTIME: 1525735820.998137
// TIME: 1525735820 uTIME: 1525735820.998528
// TIME: 1525735820 uTIME: 1525735820.998914
// TIME: 1525735820 uTIME: 1525735820.999287
// TIME: 1525735820 uTIME: 1525735820.999657
// TIME: 1525735820 uTIME: 1525735821.000026 time() is behind
// TIME: 1525735820 uTIME: 1525735821.000367 time() is behind
// TIME: 1525735820 uTIME: 1525735821.000705 time() is behind
// TIME: 1525735820 uTIME: 1525735821.001042 time() is behind
// TIME: 1525735820 uTIME: 1525735821.001379 time() is behind
// TIME: 1525735821 uTIME: 1525735821.001718
// TIME: 1525735821 uTIME: 1525735821.002070
// TIME: 1525735821 uTIME: 1525735821.002425
// TIME: 1525735821 uTIME: 1525735821.002770
// TIME: 1525735821 uTIME: 1525735821.003109
// TIME: 1525735821 uTIME: 1525735821.003448
// TIME: 1525735821 uTIME: 1525735821.003787
// TIME: 1525735821 uTIME: 1525735821.004125
// TIME: 1525735821 uTIME: 1525735821.004480
Here’s a little tweak for those having trouble with cookies being set in the future or past (even after setting the date.timezone directive in php.ini or using the function):
Does anyone know if the year 2038 issue will be solved in PHP?
Lets imagine it’s year 2039 and the time() function will return negative numbers? This is not acceptable.
Using the DateTime interface is nice, but will these timestamp helper functions be removed or fixed?
If you want to create a «rounded» time stamp, for example, to the nearest 15 minutes use this as a reference:
= 60 * 15 // 60 seconds per minute * 15 minutes equals 900 seconds
//$round_numerator = 60 * 60 or to the nearest hour
//$round_numerator = 60 * 60 * 24 or to the nearest day
//If it was 12:40 this would return the timestamp for 12:45;
//3:04, 3:00; etc.
?>
I built this function to get the strtotime numbers for the beginning and ending of the month and return them as arrays in an object. Cheers.
The issue are highlighting is with the date() function, not with time(). the following code demonstrates this:
A better way to get a nice time-format (1 year ago, 2 months until) without all the trailing months, days, hours, minutes, seconds in the result is by using the DateTime format and using the date_diff function as they both does most of the heavy lifting for you
Function below as example
// Ex. (time now = November 23 2017)
getTimeInterval ( «2016-05-04 12:00:00» ); // Returns: 1 year ago
getTimeInterval ( «2017-12-24 12:00:00» ); // Returns: 1 month until
I did an article on floating point time you can download from my website. Roun movements is the radial ounion movement and there is a quantum ounion movement as well, this code will generate the data for http://www.chronolabs.org.au/bin/roun-time-article.pdf which is an article on floating point time, I have created the calendar system as well for this time. It is compatible with other time and other solar systems with different revolutions of the planets as well as different quantumy stuff.
Here’s one way to generate all intermediate dates (in mySQL format) between any 2 dates.
Get start and end dates from user input, you’d need to do the basic validations that :
— start and end dates are valid dates
— start date //start date 2001-02-23
$sm = 2 ;
$sd = 23 ;
$sy = 2001 ;
//end date 2001-03-14
$em = 3 ;
$ed = 14 ;
$ey = 2001 ;
A method return GMT time (gmttime):
elapsed time function with precision:
Here is a version for the difference code that displays «ago» code.
It does use some precision after the time difference is longer than a day. ( ie days are more than 60 * 60 * 24 hours long )
// Make the entered date into Unix timestamp from MySQL datetime field
// Calculate the difference in seconds betweeen
// the two timestamps
How to get Current Timestamp from Carbon in Laravel 5
I want to get current timestamp in laravel 5 and I have done this-
I am getting eror- ‘Carbon not found’-
Can anyone help, please?
7 Answers 7
You can try this if you want date time string:
If you want timestamp, you can try:
For Laravel 5.5 or above just use the built in helper
If you want a unix timestamp, you can also try this:
You need to add another \ before your carbon class to start in the root namespace.
It may be a little late, but you could use the helper function time() to get the current timestamp. I tried this function and it did the job, no need for classes :).
You can find this in the official documentation at https://laravel.com/docs/5.0/templates
With a \ before a Class declaration you are calling the root namespace:
otherwise it looks for it at the current namespace declared at the beginning of the class. other solution is to use it:
PHP Date() & Time Function: How to Get Current Timestamp?
Updated August 27, 2021
PHP date() Function
PHP date function is an in-built function that simplify working with date data types. The PHP date function is used to format a date or time into a human readable format. It can be used to display the date of article was published. record the last updated a data in a database.
In this tutorial, you will learn date and time function in PHP-
PHP Date Syntax & Example
PHP Date the following basic syntax
Let’s look at a basic example that displays the current year.
Output:
What is a TimeStamp?
A timestamp in PHP is a numeric value in seconds between the current time and value as at 1 st January, 1970 00:00:00 Greenwich Mean Time (GMT).
The value returned by the time function depends on the default time zone.
The default time zone is set in the php.ini file.
It can also be set programmatically using date_default_timezone_set function.
The code below displays the current time stamp
Assuming you saved the file timestamp.php in phptuts folder, browse to the URL http://localhost/phptuts/timestamp.php
Note: the value of the timestamp PHP is not a constant. It changes every second.
Getting a list of available time zone identifiers
Before we look at how to set the default time zone programmatically, let’s look at how to get a list of supported time zones.
“$timezone_identifiers = DateTimeZone::listIdentifiers();” calls the listIdentifiers static method of the DateandTime Zone built in class.
Assuming you saved the file list_time_zones.php in phptuts folder, browse to the URL http://localhost/phptuts/list_time_zones.php
PHP set Timezone Programmatically
The date_default_timezone_set function allows you to set the default time zone from a PHP script.
The set time zone will then be used by all date in PHP function scripts. It has the following syntax.
The script below displays the time according to the default time zone set in php.ini.
It then changes the default time zone to Asia/Calcutta and displays the time again.
Assuming you have saved the file set_time_zone.php in the phptuts folder, browse to the URL http://localhost/phptuts/set_time_zone.php
PHP Mktime Function
The mktime function returns the timestamp in a Unix format.
It has the following syntax.
Let’s now look at an example that creates a timestamp for the date 13/10/2025 using the mktime function.
Output:
PHP Date function reference
The table below shows the common parameters used when working with the PHP date functions.