如何将'Apr9,20037：33am'转换为unix时间戳？

I have a date in this format: Apr9,20037:33am

How do I turn into a timestamp?

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

$unix_timestamp = strtotime('Apr 9, 2002 11:33 am')

EDIT: Asker changed question, above no longer applies.

If you have a format that can't be parsed also take a look at: date_parse_from_format