past & future birthday

[Sonic_Rage]

I'm working on a page that will allow family/visitors to see information regarding my newphew. I was hoping to make a box that would say something along the lines of these statments:

"I am X years old."
"I will be X in XX days!"

X = Age in years.
XX = Days between current Age and next Birthday.

I've come up with this so far:

$birthdate ="1017810000"; // Birthday of Child
$current_time = time(); // Get current time
$diff_seconds = $current_time - $birthdate;
$years = floor($diff_seconds/31536000);  

Echo"I am $years years old."; // Displays Age in Years

$next_year = $years+1; // Add one to display next age year
$days_left = " ";  // Here is where I am stuck, how do I calculate the days till the next birthday?

Echo"I will be $next_year years old in $days_left days."; // Display next Age in Years in how many days.

So my problem is how do I make it calculate the days left till the next birthday? I tried a few variations of the script like I did for the Years, but I'm at a loss getting the last part. Can someone give me an idea on how to make this consistantly show the correct days left?

[DRuCuLa]

please woship me after my answer, ok?
lol, just kidding. 😃
your answer is this function:mktime

[Sonic_Rage]

thanks for the help, I looked over that function and the examples either didn't work or make sense for what I need. Most rely on you to put a start & end date. But I'm not sure if that is how it will work for what I need to do.

Start date is easy enough, but i'm trying to have the script determine the current age and then just calculate the days left till next birthdate, regardless of the year it is viewed. This may be more advance then what I can do. The examples I tried out gave me numbers like -951 days left till next birthday :glare:

[DRuCuLa]

bah..
here's my example of time differences(AKA birthdays):

<?php
//Next birth day date. change this to ur own
$bday_day = 25; //Day
$bday_mon = 4; //Month. 4 = April
$bday_year = 2005; //Year

//Calculate stuff
$today = time(); //current time
$nextbday = mktime(0,0,0,$bday_mon,$bday_day,$bday_year); //next birth day's time
$diff = $nextbday - $today; //time difference


//yadda yadda yadda
echo "Next B-Day:<br/>\n";
echo "In Seconds: " . $diff . "<br/>";
$diff = intval($diff/60); //seconds -> minutes
echo "In Minutes: ". $diff . "<br/>";
$diff = intval($diff/60); //minutes -> hours
echo "In Hours: ". $diff . "<br/>";
$diff = intval($diff/24); //hours -> days
echo "In Days: ". $diff . "<br/>";
$diff = intval($diff/7); //days -> weeks
echo "In Weeks: ". $diff . "<br/>";
$diff = intval($diff/4); //weeks -> months. IT'S NOT ACCURATE!
echo "In Months: ". $diff . "<br/>";
?>

i hope u understand now.

*I chose a random birth day. it's not mine. 😃

[Sonic_Rage]

ok thanks, I understand it a bit more, but here is the results I get from your example ( I used the date of April 3rd, 2002):

Next B-Day:
In Seconds: -82127131
In Minutes: -1368785
In Hours: -22813
In Days: -950
In Weeks: -135
In Months: -33

Now, instead of days resulting in -950, it needs to show the amount of days till next birthday, not from last birthday. So the answer for today should be like: In 146 days I will be 3 years old.

So that is where I am getting lost 😕