script that calculates the current age up to the last day.. grammar correct.

By : voldomazta

<?

function curage($gm,$gd,$gy){

/**
* Current Age Script
* Coded by Ramon Alivio Jr. (2005-06-12)
* Iloilo City, Philippines
* http://www.thermokarst.co.nr
*
* Usage: -- echo curage(m,d,y); --
* Where 'm' is birth month, 'd' is birth day
* and 'y' is birth year
**/

$r = '';

/**
* days of each month
**/

for($x=1 ; $x<=12 ; $x++){

$dim[$x] = date('t',mktime(0,0,0,$x,1,date('Y')));

}


/**
* vars for current date
**/

$cm = date('n');
$cd = date('j');
$cy = date('Y');


/**
* calculate differences
**/

$m = $cm - $gm;
$d = $cd - $gd;
$y = $cy - $gy;


/**
* if the given day is ahead of the current day
**/

if($d < 0) {

$td = $cd + $dim[$cm];
$tm = $cm - 1;
$d = $td - $gd;
$m = $tm - $gm;
if(($tm - $gm) < 0) {

$tm += 12;
$ty = $cy - 1;
$m = $tm - $gm;
$y = $ty - $gy;

}

}


/**
* if the given month is ahead of the current month
**/

if($m < 0) {

$tm = $cm + 12;
$ty = $cy - 1;
$m = $tm - $gm;
$y = $ty - $gy;

}


/**
* the processing area
**/

if($y < 0) {

die("That date is in the future.");

} else {

switch($y) {

case 0 : $r .= ''; break;
case 1 : $r .= $y.($m == 0 && $d == 0 ? ' year old' : ' year'); break;
default : $r .= $y.($m == 0 && $d == 0 ? ' years old' : ' years');

}


switch($m) {

case 0: $r .= ''; break;
case 1: $r .= ($y == 0 && $d == 0 ? $m.' month old' : ($y == 0 && $d != 0 ? $m.' month' : ($y != 0 && $d == 0 ? ' and '.$m.' month old' : ', '.$m.' month'))); break;
default: $r .= ($y == 0 && $d == 0 ? $m.' months old' : ($y == 0 && $d != 0 ? $m.' months' : ($y != 0 && $d == 0 ? ' and '.$m.' months old' : ', '.$m.' months'))); break;

}


switch($d) {

case 0: $r .= ($m == 0 && $y == 0 ? 'Today' : ''); break;
case 1: $r .= ($m == 0 && $y == 0 ? $d.' day old' : ($y != 0 || $m != 0 ? ' and '.$d.' day old' : '')); break;
default: $r .= ($m == 0 && $y == 0 ? $d.' days old' : ($y != 0 || $m != 0 ? ' and '.$d.' days old' : ''));

}

}

return $r;

}

?>

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