Convert php date to timestamp

In PHP, the date can be converted into a timestamp through the strtotime function. The conversion syntax is such as "strtotime(time,now);", where the parameter time specifies the date or time string, and the parameter now specifies the calculation Returns the timestamp of the value.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

Function used to convert date to UNIX timestamp: strtotime()

General form: strtotime('2010-03-24 08:15:42');

strtotime() function converts the date or time of any English text The description resolves to a Unix timestamp (number of seconds since January 1 1970 00:00:00 GMT).

Note: If the year representation uses a two-digit format, values ​​0-69 will be mapped to 2000-2069, and values ​​70-100 will be mapped to 1970-2000.

Note: Please note that for dates in m/d/y or d-m-y format, if the separator is a slash (/), the American m/d/y format is used. If the delimiter is a dash (-) or a dot (.), the European d-m-y format is used. To avoid potential errors, you should use YYYY-MM-DD format whenever possible or use the date_create_from_format() function.

Syntax

strtotime(time,now);

Parameters

time is required. Specifies a date/time string.

now Optional. Specifies the timestamp used to calculate the return value. If this parameter is omitted, the current time is used.

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