get timestamp of noon PHP

Question

Suppose I've got a timestamp, X.

Using PHP, how can I find the timestamp that represents noon of the day that X is from?

I guess I would need to convert X to a date, extract the day, and then convert noon from that day to a timestamp. Is there an easy way to do this in PHP?

Answer 1

strtotime('noon', $timestamp) should work

Answer 2

<?php
$timestamp = 1346343553;
$date = getdate($timestamp);

$noon = mktime ( 12, 00, 00, $date['mon'], $date['day'], $date['year'] );

print $noon;
print date(DATE_RSS, $noon);

Of course, this goes without saying, but timezones are not factored at all. Also, strtotime() is probably the preferred method, but getdate() doesn't get enough love!