<?php
// example usage of time_since()

// I get $post_timestamp_utc from the db using:
// SELECT UNIX_TIMESTAMP(post_datetime_utc) as post_timestamp_utc

// I get $cmnt_timestamp_utc from the db using:
// SELECT UNIX_TIMESTAMP(cmnt_date) as cmnt_timestamp_utc


// Example 1 - using one variable
// - - - - - - - - - - - - - - - - -
// set post_timestamp_utc
// 10:25:15 22/07/2004
$post_timestamp_utc = 1090491915;

// get the age of the post
$post_age = time_since($post_timestamp_utc);

// debug
print $post_age;
// > 13 hours, 51 minutes


// Example 2 - using two variables
// - - - - - - - - - - - - - - - - -
// set post_timestamp_utc
// 10:25:15 22/07/2004
$post_timestamp_utc = 1088677515;

// set cmnt_timestamp_utc
// 22:08:09 24/07/2004
$cmnt_timestamp_utc = 1090706889;

// get time between post going live and comment being made
$after_fact = time_since($post_timestamp_utc, $cmnt_timestamp_utc);

// debug
print $after_fact;
// > 2 days, 11 hours
?>