Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

calculate age from dob??

Posted on 2009-04-10
6
Medium Priority
?
346 Views
Last Modified: 2013-12-12
Below is how i store a dob... by using echo $getuserprofile['dob']; i can echo a users dob...but who can i work out there age?
<?php  
	$months = array (1 => 'January', 'February', 'March', 'April', 'May', 'June','July', 'August', 'September', 'October', 'November', 'December');
$weekday = array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday');
$days = range (1, 31);
$years = range (1910, 2015);
 
//**********************************************
 
echo "Day: <select name='day'>";
foreach ($days as $value) {
   echo '<option ';
   if($splitDate[0] == $value)
      echo 'selected="selected"';
   echo ' value="'.$value.'">'.$value.'</option>\n';
} echo '</select>';
 
echo "Month: <select name='month'>";
foreach ($months as $value) {
 
   echo '<option ';
   if($splitDate[1]==$value) 
      echo "selected='selected'";
   echo 'value="'.$value.'">'.$value.'</option>\n';
} echo '</select>';
 
echo "Year: <select name='year'>";
foreach ($years as $value) {
   echo '<option ';
   if($splitDate[2]==$value)
      echo 'selected="selected"';
   echo " value='".$value."'>".$value."</option>\n";
} 
$dob = $day.'-'.$month.'-'.$year; 
 ?>

Open in new window

0
Comment
Question by:runnerjp
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 19

Expert Comment

by:Michael701
ID: 24116607
try this
$today=getdate();
$age=$today['year']-$dob_year-1;
// now have they had a birthday this year?
if ($today['month']>$dob_month)
  $age++;
else
  if ($today['month']==$dob_month)
    if ($today['mday']>=$dob_day)
      $age++;
 
echo $age;

Open in new window

0
 
LVL 111

Accepted Solution

by:
Ray Paseur earned 2000 total points
ID: 24116680

<?php // RAY compute_age_from_dob.php
 
// TEST DATA
$dob = '15'.'-'.'09'.'-'.'1950';
 
// GET TIMESTAMPS
$ts_dob = strtotime($dob);
$ts_now = time();
 
// DIFFERENCE IN YEARS
$years = date('Y', $ts_now) - date('Y', $ts_dob);
 
// IF BEFORE THE BIRTHDAY
$mdnow = date('m-d', $ts_now);
$mddob = date('m-d', $ts_dob);
if ($mdnow < $mddob) $years--;
 
// SHOW THE ANSWER
echo $years;

Open in new window

0
 

Author Comment

by:runnerjp
ID: 24116846
soryy i should have said i display dob as 19-December-1987   so would i need to somehow convert the month into numeric?
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 111

Expert Comment

by:Ray Paseur
ID: 24116858
That should work OK with strtotime()

http://www.laprbass.com/RAY_strtotime.php?s=19-December-1987

HTH, ~Ray
0
 
LVL 19

Expert Comment

by:Michael701
ID: 24117010

// since you already $months, this should get the month number
$dob_month = array_keys ( $months, $dob_month_text );
 
 
// but really you should
 
echo "Month: <select name='month'>";
foreach ($months as $month_number=>$month_name) {
 
   echo '<option ';
   if($splitDate[1]==$month_name) 
      echo "selected='selected' ";
   echo 'value="'.$month_number.'">'.$month_name.'</option>\n';
} echo '</select>';

Open in new window

0
 
LVL 111

Expert Comment

by:Ray Paseur
ID: 24117044
One note, not directly at issue here, but useful as a "best practices" approach to handling dates.  Make all internal representations into ISO8601 date/time strings.  php date('c') gives you the traditional format

YYYY-MM-DD HH:MM:SS

This is useful because you can use it with strtotime and date() to format dates and times for output, and you can see the columns line up in reports.  Also, it collates and compares correctly whether in a timestamp or a character string.
0

Featured Post

Tech or Treat! - Giveaway

Submit an article about your scariest tech experience—and the solution—and you’ll be automatically entered to win one of 4 fantastic tech gadgets.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this. Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it i…
Originally, this post was published on Monitis Blog, you can check it here . In business circles, we sometimes hear that today is the “age of the customer.” And so it is. Thanks to the enormous advances over the past few years in consumer techno…
The viewer will learn how to count occurrences of each item in an array.
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.
Suggested Courses

618 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question