The HTML <input type="datetime-local">
element expects the value
attribute to be set in "YYYY-MM-DDThh:mm
" format (as defined by RFC 3339). Therefore, if you're setting a default value on it using PHP, then you must adhere to the correct date format (i.e. "Y-m-d\TH:i
" in PHP).
For example, you can set the current date-time using DateTime
(or DateTimeImmutable
), in the following way:
$dt = new DateTime(); echo '<input type="datetime-local" value="' . $dt->format('Y-m-d\TH:i') . '" />';
Similarly, you can set a specific date-time using DateTime
(or DateTimeImmutable
), in the following way:
$dt = new DateTime('2022-10-16 04:45:00'); echo '<input type="datetime-local" value="' . $dt->format('Y-m-d\TH:i') . '" />';
There are several other ways in which you can create a formatted date in PHP. For example, you may use the date_create()
function as an alternative, which creates a new DateTime
object:
$dt = date_create('16 Oct 2022 4:45 am'); echo '<input type="date" value="' . $dt->format('Y-m-d\TH:i') . '" />';
Please note that the value that's actually displayed in the browser might be in a different format than the one you use on the value
property of <input type="datetime-local" />
element (depending on the browser and/or the operating system the user is using). For example, a value set to "2022-10-16T04:45
" might be shown to the user as "16.10.2022, 04:45 AM" in the browser. This depends on how the browser/user-agent chooses to display the value.
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