How can i get next year by birthday ?

[kb5220]

Hi developer.

 

I am writing here because I am shock into a problem.

 

I am starting to make a page that runs much of dates.

 

Example.

I sign on page and then I will write a date from the birthday. let and say I would write my birthday as 08-02-1991 then it could figure out when I once again have a birthday / one week before.

 

Thanks in advance for your help.

[wildteen88]

You can use strtotime. An example script

// set the date of birth
$dob = '08-02-1991';

// get the timestamp for the dob
$dobTime = strtotime($dob);

// get the timestamp 1 week before the dob timestamp
$dob1WeekBefore = strtotime('-1 Week', $dobTime);

echo 'Birthday:<br />' . date('D jS M Y', $dobTime) . '<br /><br />';

echo 'Week Before Birthday:<br />' . date('D jS M Y', $dob1WeekBefore);

 

Note. strtotime will not work with any dates before 1st of Jan 1970.

[kb5220]

Thanks for you help.

 

But what i think was my birthday was 08-02-1991, so will i have it to figure out when the next dato was 08-02-2012 and one week before that

 

Hope you understand

[wildteen88]

You'll need to calculate the difference in years (current year - dob year)

// get the dob year
list(,,$dobyear) = explode('-', $dob);
// get the difference in years
// add 1 to get the date for next years birthday
$years = (date('Y') - $dobyear) + 1;

 

date('Y') returns the current year.

 

We'll use this code to get the date a week before the birthday next year

$dob1WeekBefore = strtotime("+$years year -1 Week", $dobTime);

 

Full code

$dob = '08-02-1991';

$dobTime = strtotime($dob);

list(,,$dobyear) = explode('-', $dob);
$years = (date('Y') - $dobyear) + 1;
$dob1WeekBefore = strtotime("+$years year -1 Week", $dobTime);


echo 'You where born on:<br />' . date('D jS M Y', $dobTime) . '<br /><br />';

echo 'Week before your birthday:<br />' . date('D jS M Y', $dob1WeekBefore);

[kb5220]

Thanks it was really helpful.

 

Now i made this

<?php
$day = "12";
$month = "06";
$year = "1991";

if (date("d") <= $day && date("m") <= $month){
echo date("d-m-Y", mktime(0,0,0,$month,$day - 7,date("Y")));
}else {
$dob = "$day-$month-$year";

$dobTime = strtotime($dob);

list(,,$dobyear) = explode('-', $dob);
$years = (date('Y') - $dobyear) + 1;
$dob1WeekBefore = strtotime("+$years year -1 Week", $dobTime);

echo date('d-m-Y', $dob1WeekBefore);
}
?>