Age calculation function

function age($month, $day, $year)
{
(checkdate($month, $day, $year)==0) ? die("no such date.") : "";
$y=gmstrftime("%Y");
$m=gmstrftime("%m");
$d=gmstrftime("%d");
$age=$y-$year;
return (($m<=$month)&&($d<=$day)) ? $age-1 : $age;
}



the code above takes month, date, and year of birth as arguments, check if they exist/are valid, if yes it continues, take current year, month, and date...does some calculations and reasoning, and returns the age...

If you were to edit that post so that it is formatted so that it is readable, it would help. There is also no reason for the [ code][ /code] tags in addition to the [ php][ /php] tags, that just makes it more unreadable.

<?php

function age($month, $day, $year)
{
(checkdate($month, $day, $year) == 0) ? die("no such date.") : "";
$y = gmstrftime("%Y");
$m = gmstrftime("%m");
$d = gmstrftime("%d");
$age = $y - $year;
return (($m <= $month) && ($d <= $day)) ? $age - 1 : $age;
}


?>

<?php

function age($month, $day, $year)
{
(checkdate($month, $day, $year) == 0) ? die("no such date.") : "";
$y = gmstrftime("%Y");
$m = gmstrftime("%m");
$d = gmstrftime("%d");
$age = $y - $year;
return (($m <= $month) && ($d <= $day)) ? $age - 1 : $age;
}


?>


Didn't quite work... wasn't detecting the right age. Here is my modified code that seems to be working fine:


function age($month, $day, $year)
{
(checkdate($month, $day, $year) == 0) ? die("no such date.") : "";
$y = gmstrftime("%Y");
$m = gmstrftime("%m");
$d = gmstrftime("%d");
$age = $y - $year;
if($m <= $month)
{
if($m == $month)
{
if($d < $day) $age = $age - 1;
}
else $age = $age - 1;
}
return($age);
}

I wouldn't recommend hijacking the output from within the function using exit(), die(), etc... Just grab the data and control the output from the `view` scope:

function age( $month, $day, $year )
{
if ( checkdate( $month, $day, $year ) )
{
//calculate $age as an integer
return age;
}
return FALSE;
}

Example:

$age = age( 12, 25, 1990 );

if ( FALSE === $age )
{
echo 'Not a valid birth date';
}
else
{
echo 'Your age: ' . $age;
}