Posted By

oscarduignan on 03/19/09

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Last Edited at 03/19/09 07:50pm

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GetTimeDifferenceInWords

/ Published in: PHP

Simple function to recreate the distance_of_time_in_words function from rails.

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/**
 * @var     timestamp
 * @var     timestamp
 * @return  string approximate time, for example: about 19 hours
 */
function getTimeDifferenceInWords($firstTime, $secondTime = '')
{
    // convert to unix timestamps
    $firstTime = strtotime($firstTime);
    // if second time was not supplied, use current time
    $secondTime = ($secondTime) ? strtotime($secondTime) : time();
        
    // find out the difference in seconds
    $seconds = ($firstTime > $secondTime) 
        ? $firstTime - $secondTime 
        : $secondTime - $firstTime;

$minutes = floor($seconds / 60);
    if ($minutes == 0) { return 'less than a minute'; }
    if ($minutes == 1) { return 'a minute'; }
    if ($minutes < 45) { return $minutes . ' minutes'; }

$hours = round($minutes / 60);
    if ($hours <= 1) { return 'about 1 hour'; }
    if ($hours < 24) { return 'about ' . $hours . ' hours'; }

$days = round($hours / 24);
    if ($days == 1) { return 'about 1 day'; }
    if ($days < 30) { return 'about ' . $days . ' days'; }
        
    $months = round($days / 30);
    if ($months == 1) { return 'about 1 month'; }
    if ($months < 12) { return 'about ' . $months . ' months'; }

$years = round($months / 12);
    if ($years == 1) { return 'about 1 year'; }
    return 'about ' . $years . ' years';
}

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