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Title : PHP function for displaying relative dates in a human readable format
Categories : PHP, Date Time Click here to Update Your Picture
John McClumpha
Date : Mar 03rd 2008
Grade : 2 of 5 (graded 3 times)
Viewed : 12637
File : 4769.php
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Here's a handy PHP function I use for comparing times and displaying the difference in a human-readable format.

The function itself returns the nearest approximate time based on the largest value from: decades, years, months, weeks, days, hours, minutes or seconds


<?php
function RelativeTime($timestamp){
   
$difference = time() - $timestamp;
   
$periods = array("sec", "min", "hour", "day", "week", "month", "years", "decade");
   
$lengths = array("60","60","24","7","4.35","12","10");

    if (
$difference > 0) { // this was in the past
       
$ending = "ago";
    } else {
// this was in the future
       
$difference = -$difference;
       
$ending = "to go";
    }       
    for(
$j = 0; $difference >= $lengths[$j]; $j++) $difference /= $lengths[$j];
   
$difference = round($difference);
    if(
$difference != 1) $periods[$j].= "s";
   
$text = "$difference $periods[$j] $ending";
    return
$text;
}
?>



Usage Example
<?php
echo RelativeTime($timestamp);
?>



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