(PHP 5 >= 5.3.0, PHP 7, PHP 8)
DateTimeInterface::getTimestamp -- DateTimeImmutable::getTimestamp -- DateTime::getTimestamp -- date_timestamp_get — Gets the Unix timestamp
Object-oriented style
Procedural style
Gets the Unix timestamp.
This function has no parameters.
Returns the Unix timestamp representing the date.
If the timestamp cannot be represented as int, a
DateRangeError is thrown. Prior to PHP
8.3.0, a ValueError is thrown. And, prior to
PHP 8.0.0, false was returned in this case. Still, the timestamp can be
retrieved as string by using
DateTimeInterface::format() with the
U format.
| Version | Description |
|---|---|
| 8.3.0 | The out-of-range exception is now DateRangeError. |
| 8.0.0 |
These functions no longer return false on failure.
|
Example #1 DateTime::getTimestamp() example
Object-oriented style
<?php
$date = new DateTimeImmutable();
echo $date->getTimestamp();
?>Procedural style
<?php
$date = date_create();
echo date_timestamp_get($date);
?>The above examples will output something similar to:
1272509157
If you need to retrieve the timestamp with millisecond or microsecond resolution, then you can use the DateTimeInterface::format() function.
Example #2 Retrieving timestamp with milli and microsecond resolution
Object-oriented style
<?php
$date = new DateTimeImmutable();
$milli = (int) $date->format('Uv'); // Timestamp in milliseconds
$micro = (int) $date->format('Uu'); // Timestamp in microseconds
echo $milli, "\n", $micro, "\n";
?>The above examples will output something similar to:
1674057635586 1674057635586918