使用正则表达式将日期/时间字符串更改为PHP中的时间戳

Question

I'm struggling with a RegEx to change a date/time string to a timestamp. The format of the string is 'd/m/Y \\a\\tg:ia' (eg 15/06/2012 at 6:00pm).

I need to do this to ensure that a date is not in the past.

I can do the date part (just 'd/m/Y' ) using the following code, but it's the rest that I am struggling with. Thanks.

$expires = preg_replace("/(\d{2})\/(\d{2})\/(\d{4})/", "\\3-\\2-\\1" , $poll['poll_expired']);

Thanks.

Answer 1

Why can't you do something like this?

$date = DateTime::createFromFormat('d/m/Y \a\t g:ia', ' 15/06/2012 at 6:00pm');
$expires = $date->format('U');

(Not tested but you get the idea.)