Micro-second

Micro-seconds are one thousandth of a second. They are accessible in different ways:

• Datetime and DateTimeImmutable objects, for dates
• microtime() for dates
• hrtime() for intervals

Do not use date() to get micro-seconds, as the function always returns 0.

<?php

$ms = (new Datetime()->format('u'));

$ms = microtime(true);

?>

Documentation

See Also

• PHP | microtime() Function
• A Comprehensive Guide to PHP’s time() and microtime() Functions

Related

• microtime()
• hrtime()
• DateTime