Clean looking post times for Wordpress

clean-post-date.php

<!--Example-->
<?php echo cleanPostDate( get_the_date( 'U' ) ); ?>

<?php echo cleanPostDate( get_the_date() ); ?>


<?php

  function cleanPostDate($arg_post_date) {
  	
  	//Detect if it's already UTC
  	if( true == is_numeric($arg_post_date) &&  0 != $arg_post_date ){
  		
  		//Post date is good to go
  		$post_date = $arg_post_date;
  		
  	} else {//Parse non-UTC date int UTC
  		
  		//Try to read post date an time string
  		$post_date = strtotime( $arg_post_date );
  		
  	}
  	
  	//If it's still not valid then stop
  	if( false == $post_date || 0 == $post_date ){ return false; }
  	
  	
  	$wordpress_local_time = current_time( 'U' );//Local time in wordpress
  	$an_hour = 60 * 60;//60 seconds times 60 minutes
  	$a_day = $an_hour * 24;
  	
  	
  	//debug( $post_date >= strtotime( '1 hour ago', $wordpress_local_time ) );
  	
  	if( $post_date >= strtotime( '-1 hour', $wordpress_local_time ) ){//If less than 1 hour hours
  		//Minute Format - 5 min ago
  		
  		$minutes_since = round( abs($wordpress_local_time - $post_date) / 60 );
  		
  		$output_date = $minutes_since.' mins ago';
  		
  	} else if( date('d/m/Y', $post_date ) == date('d/m/Y', $wordpress_local_time) ){//If it's from today
  		//Hour Format - 5 hrs ago
  		
  		$hours_since = round( abs($wordpress_local_time - $post_date) / (60 * 60) );
  		
  		$output_date = $hours_since.' hrs ago';
  		
  	} else if( date('d/m/Y', $post_date ) == date('d/m/Y', $wordpress_local_time - $a_day) ){//If Yesterday
  		
  		$output_date = 'Yesterday';
  		
  	} else if( date('W/Y', $post_date ) == date('W/Y', $wordpress_local_time) ){//If from this week
  		//Format - Sunday
  		
  		$output_date = date('l', $post_date );
  		
  	} else if( date('Y', $post_date ) == date('Y', $wordpress_local_time) ){//If from this year
  		//Format - August 8
  		
  		$output_date = date('F j', $post_date);
  		
  	} else {//Pretty much if it's older than this year
  		//Format - August 8 1992
  		
  		$output_date = date('F j Y', $post_date);
  		
  	}
  	
  	//19 hrs ago(If less than 24 hours)
  	//Yesterday(If date is yesterday)
  	//2 days ago(If from this week)
  	//Aug 3(If from this year)
  	//Dec 31st 2015(If all else)
  	
  	return $output_date;
  	
  }