strtotime()

strtotime() — Parse about any English textual datetime description into a Unix timestamp.

strtotime() — Each parameter of this function uses the default time zone unless a time zone is specified in that parameter. Be careful not to use different time zones in each parameter unless that is intended. See date_default_timezone_get on the various ways to define the default time zone.

Inputs: datetime: A date/time string. Valid formats are explained in Date and Time Formats. baseTimestamp: The timestamp which is used as a base for the calculation of relative dates.

Returns: Returns a timestamp on success, false otherwise.