How to convert mktime to milliseconds in PHP

The mktime () function is very useful for date calculation and validation. It automatically calculates the correct value for an input out of the range:

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<? Php echo (date ("M-d-Y", mktime (,). "<br/> "); Echo (date ("M-d-Y", mktime (,). "<br/> "); Echo (date ("M-d-Y", mktime (,). "<br/> "); Echo (date ("M-d-Y", mktime (,). "<br/>");?>

The output of the code above wocould be:
The above code will output the following results:

Jan-05-2002Feb-01-2002Jan-01-2001Jan-01-1999 don't need to explain more!

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$ Now = mktime (0, 0, 0, date ("m"), date ("d"), date ("Y ")); Echo "now is". date ("Y/m/d", $ now );

Display result:
Now is 2012/05/30
Obviously, this is not the result I want.
As a result, according to the old thinking, I take it for granted to the following form:

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$ Now = mktime (date ("h"), date ("M"), date ("s"), date ("m"), date ("d "), date ("Y ")); Echo "now is". date ("Y/M/d h: I: s", $ now );

Pay attention to the red part. Generally, if the month is m, the minute should be M. Or the former uses M, and the latter uses m.
Display result:

Warning: mktime () expects parameter 2 to be long, string given in D: usrwebroottestPHPindex. php on line 46
Now is 1970/01/01 08: Jan: 00

It seems that subjective assumptions are not advisable. The PHP syntax is different from other languages.

Don't sell off the customs, or directly give you the correct answer

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$ Now = mktime (date ("h"), date ("I"), date ("s"), date ("m"), date ("d "), date ("Y ")); Echo "now is". date ("Y/m/d h: I: s", $ now );

Haha ~ It is "I" rather than m or M. Here we will give you an example to avoid detours for PHP beginners.
As for what M means, you can understand it after you do it yourself... hey !!!
Display result:

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Now is 2012/05/30 04:54:25

Okay,

Mktime () functionReturns the Unix timestamp of a date.

The parameter always represents the GMT date, soIs_dstThe result is not affected.

The parameters can be left empty from right to left. The blank parameters are set to the corresponding current GMT value.

Syntax

Mktime (hour, minute, second, month, day, year, is_dst)

Parameters	Description
Hour	Optional. The specified hour.
Minute	Optional. Minutes.
Second	Optional. Specified seconds.
Month	Optional. Indicates the month in number.
Day	Optional. Specified day.
Year	Optional. Specified year. In some systems, the valid value ranges from 1901 to 2038. However, this restriction does not exist in PHP 5.
Is_dst	Optional. If the time is in the daylight saving time (DST) period, it is set to 1; otherwise, it is set to 0. If it is unknown, it is set to-1. The is_dst parameter has been deprecated since 5.1.0. Therefore, the new time zone processing feature should be used.