variant_date_to_timestamp() assumes the COM date in the current Windows time zone and converts it to the current PHP time zone
(PHP 5, PHP 7)
variant_date_to_timestamp — Converts a variant date/time value to Unix timestamp
Converts variant
from a VT_DATE
(or similar) value into a Unix timestamp. This allows easier
interopability between the Unix-ish parts of PHP and COM.
variant
The variant.
Returns a unix timestamp, or null
on failure.
variant_date_to_timestamp() assumes the COM date in the current Windows time zone and converts it to the current PHP time zone