ryanmerritt

// My Birthday :)
$date_1 = new DateTime( '1989-06-15' );

// Todays date
$date_2 = new DateTime( date( 'Y-m-d' ) );

$difference = $date_2->diff( $date_1 );

// Echo the as string to display in browser for testing
echo (string)$difference->y;

ryanmerritt

<?php
function dateDiff($start, $end) {

	$start_ts = strtotime($start);
	$end_ts = strtotime($end);
	$diff = $end_ts - $start_ts;

	return round($diff / 86400);

}

ryanmerritt

#!/usr/bin/env php
# This function prints the difference between two php datetime objects
# in a more human readable form
# inputs should be like strtotime($date)
# Adapted from https://gist.github.com/207624 python version

function humanizeDateDiffference($now,$otherDate=null,$offset=null){
	if($otherDate != null){
		$offset = $now - $otherDate;
	}

ryanmerritt

<?php
 print time();
//1324402770
 $unixTime = time();
 print_r(getdate($unixTime));
// Array
// (
//    [seconds] => 48
//    [minutes] => 54
//    [hours] => 12

ryanmerritt

<?php
/**
 * time_elapsed_string()
 *
 * Zachary Johnson
 * http://www.zachstronaut.com/posts/2009/01/20/php-relative-date-time-string.html
 */
function time_elapsed_string($ptime) {
    $etime = time() - $ptime;
    

ryanmerritt

<?php

/**
 * Get the relative time between two timestamps.
 * 
 * @access public
 * @param integer|string $time The date or timestamp that represents the time we're comparing to.
 * @param integer|string $comparison_time [optional] The date or timestamp we want comparisons to be relative to. Defaults to the current timestamp.
 * @param boolean $return_array [optional] Whether to return the relative time as an array of components rather than a string. Default value is FALSE.
 * @return string Returns the amount of time between the two timestamps as a string or an array if $return_array is TRUE.

ryanmerritt

<?php
/**
 * Get ISO-8601 week number for a given date
 *
 * @author	Faisalman <[email protected]>
 * @link	http://gist.github.com/faisalman
 * @link	http://en.wikipedia.org/wiki/ISO_week_date
 * @param $y	int	year
 * @param $m	int	month
 * @param $d	int	day