Description:
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When calling touch() with a timestamp on Windows Server 2012 with IIS 8 (using "php-cgi.exe" of "php-7.3.8-nts-Win32-VC15-x86"), the generated file does not have a "last modified" date.

- When executing the test script through CLI ("php.exe"), the "last modified" date of the file is being set properly.
- When calling touch() without a timestamp, the "last modified" date is properly being set to the current datetime.
- With php 7.3.6 ("php-7.3.6-nts-Win32-VC15-x86") it works as expected.

Test script:
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<?php
touch('test.txt', time() + (60 * 60));

Expected result:
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The file "test.txt" should have a last modified date that is one hour in the future.

Actual result:
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The file "test.txt" does not have a last modified date.