PHP mktime通知

Question

I want to change given date and time or date only into Unix time.

I tried like this:

mktime("Jan-12-2012 2:12pm");

But it’s not working:

Even in PHP documentation I looked at many examples and many of them don’t consist the matter that I want.

And when I try:

$user_birthday=$_POST["user_birthday"];
$db_user_birthday=empty($user_birthday)?"":mktime($user_birthday);

$_POST["user_birthday"] was given value from form that is jan-12-2012 2:12pm it show error like this:

Notice: A non well formed numeric value encountered in C:\Program Files (x86)\Ampps\www\admin\index.php on line 76

How do I fix it or display time into Unix?

Answer 1

You should take a look at this answer: convert date to unixtime php

Essentially, you have mixed up mktime() with strtotime(). strtotime() allows you to parse an English textual string into a Unix timestamp. mktime() constructs a unix datetime based on integer arguments.

For example (again taken from the question above)

echo mktime(23, 24, 0, 11, 3, 2009);
1257290640

echo strtotime("2009-11-03 11:24:00PM"); 
1257290640