How to convert date to timestamp in PHP?

Question

How do I get timestamp from e.g. 22-09-2008?

Answer 1

If you're looking to convert a UTC datetime (2016-02-14T12:24:48.321Z) to timestamp, here's how you'd do it:

function UTCToTimestamp($utc_datetime_str)
{
    preg_match_all('/(.+?)T(.+?)\.(.*?)Z/i', $utc_datetime_str, $matches_arr);
    $datetime_str = $matches_arr[1][0]." ".$matches_arr[2][0];

    return strtotime($datetime_str);
}

$my_utc_datetime_str = '2016-02-14T12:24:48.321Z';
$my_timestamp_str = UTCToTimestamp($my_utc_datetime_str);