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When working with timestamps in PHP, it is often necessary to convert them into human-readable date strings. This is particularly useful for displaying dates and time in a consistent and visually appealing format. One common date format used is the ISO 8601 format, which expresses dates and times in the form:
YYYY-MM-DD[T]hh:mm:ss[Z][+/-hh:mm]
In this format, the Z suffix indicates that the time is in UTC (Coordinated Universal Time).
To convert a UNIX timestamp to an ISO 8601-formatted date string, you can use the gmdate() function in PHP. The gmdate() function takes two arguments: a date format string and a timestamp.
For example, to convert the UNIX timestamp 1333699439 to an ISO 8601-formatted date string, you would use the following code:
$timestamp = 1333699439; echo gmdate("Y-m-d\TH:i:s\Z", $timestamp);
This would output the date string:
2008-07-17T09:24:17Z
The Y-m-dTH:i:sZ format string specifies the following date format elements:
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