[SOLVED] My age() function.

[cordoprod]

I have a function to output ages from a timestamp.

 

// output age
function age($timestamp) {
$ageTime = $timestamp; 
$t = time(); 
$age = ($ageTime < 0) ? ( $t + ($ageTime * -1) ) : $t - $ageTime;
$year = 60 * 60 * 24 * 365;
$ageYears = $age / $year;

return floor($ageYears);
}

 

I output it from a timestamp from a birthday.

But the problem is let's say if i output a date  which is 30. But  a couple of days, maybe 4-5 days before the actual 31 birthday it shows 31.

 

Can anyone see what the errors are?

[PFMaBiSmAd]

That is because there are not 365 days in every year, so you cannot simply multiply by that number. There is an error of one day for every 4 years of age.

 

The age of something is defined as the difference in the current year and the DOB year, subtract 1 if the birthday has not occurred in the current year (current month/day is less than the DOB month/day).

 

 

[cordoprod]

I understand, and could you show how i can do that then?

[PFMaBiSmAd]

<?php
function year($date)
{
return substr($date, 0, 4); 
} // end of year function

function mmdd($date)
{
return substr($date, 5,5);
} // end of mmdd function

function age($today,$date)
{

return year($today) - year($date) - (mmdd($today) < mmdd($date));
} // end of function age

$today = date("Y-m-d");
$date = "2000-11-01";

echo "DOB: $date, Age: " . age($today,$date) . "<br />";
?>

 

[cordoprod]

Thanks, it worked