php mktime

JonD

JonD

JonD

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I have a date of birth field on a website which is stored in unix timestamp which of course only starts are 1970.

If the user selects a date of birth before this and I try to create a timestamp using mktime() and it results in 0, but what I want is -5631511 (or whatever) so I can work out their age etc.

How can I create a minus timestamp from a given date, eg:

$day = 11
$month = 1;
$year = 1900;

Thx
JD
 
Hmm it should be creating a timetamp actually but it isnt.

mktime(0, 0, 0, 9, 9, 1919);

works

but mktime(0,0,0, (int) $_POST['month'], (int) $_POST['day'], (int) $_POST['year']);isnt

hmm

I just worked out that 1903 is the earliest date I can use before it returns null.

Is it because an integer can only start at -2,147,483,648?

Is there anyway around this?
 
Last edited:
lol I know people wont be that old but its just id like to know if there is anyway around the problem.
 
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