wordpress-human-time-diff-enhanced.php

/**
 * Time ago - Human time diff enhanced
 *
 * @param string    $timeformat  Fallback date format
 * @param int       $timestamp   Post or comment or anyhing's timestamp
 * @return string
 */
if( ! function_exists('dw_time_ago') ){
    function dw_time_ago( $timeformat = 'j F Y H:i', $timestamp = '' ){
        if( ! $timestamp ){
            global $post;
            $timestamp = get_the_time( 'U', $post->ID );

            if( ! $timestamp ) return;
        }

        $diff = current_time('timestamp') - $timestamp;
        $is_today     = date( 'Y-m-d', current_time('timestamp') ) == date( 'Y-m-d', $timestamp );
        $is_yesterday = date( 'Y-m-d', current_time('timestamp') - 86400 ) == date( 'Y-m-d', $timestamp );

        if( $diff  < 0 ) return;

        // less than 2 minutes - print just now or moments ago
        if( $diff < 120 ){
            $text = __('Just now', 'textdomain');

        }

        // less than one hour - print x minutes ago
        elseif( $diff < 3600 ){
            $text = sprintf( __('%d minutes ago', 'textdomain'), ( floor( $diff / 60 ) % 60 ) );

        }

        // less than 7 hours - print x hours ago
        elseif( $diff < 25200 ) {
            $text = sprintf( __('%d hours ago', 'textdomain'), ( floor( $diff / 60 / 60 ) % 24 ) );

        }

        // belongs to today - print Today xx:xx
        elseif( $is_today ){
            $text = sprintf( __('Today %s', 'textdomain'), date_i18n( 'H:i', $timestamp ) );

        }

        // belongs to yesterday - print Yesterdat xx:xx
        elseif( $is_yesterday ){
            $text = sprintf( __('Yesterday %s', 'textdomain'), date_i18n( 'H:i', $timestamp ) )

        } else{
            $text = date_i18n( $timeformat, $timestamp );

        }

        return $text;
    }
}

This is a simple enhanced version of Wordpress human_time_diff function to show more friendly dates in Wordpress.