daysPassed() function to compare two dates

[thedudeabides]

I want to do something like this-

 

$days_passed = daysPassed ($last_datetime); //returns (float)number of days (6 hours returns .25 days, 12 hours returns 0.5)

$last_datetime = $getCurrentTime();

 

I will then store $last_datetime in the database for next time.

 

I'm a bit overwhelmed by all the different time and date functions.  Does someone have ready made functions that will work here?

[JasonLewis]

There are a fair few topics around about this, try searching. Here are a few good results.

 

http://www.phpfreaks.com/forums/php-coding-help/date-difference-295142/msg1397605/#msg1397605

http://www.phpfreaks.com/forums/php-coding-help/difference-between-dates-273176/msg1290174/#msg1290174

 

Shouldn't be hard to tailor it to your needs really. Just a matter of converting dates to UNIX timestamp, subtracting then divide that by 60*60*24 (86400, which is 1 day in seconds). Then round, ceil or floor it.

[requinix]

Shouldn't be hard to tailor it to your needs really. Just a matter of converting dates to UNIX timestamp, subtracting then divide that by 60*60*24 (86400, which is 1 day in seconds). Then round, ceil or floor it.

So long as you don't mind it being off by an hour for parts of the year.