src/Date.php
public function ago($since = null, $syntax = null, $short = false, $parts = 1, $options = null)
    {
        return $this->diffForHumans($since, $syntax, $short, $parts, $options);
    }
public function ago($since = null, $syntax = null, $short = false, $parts = 1, $options = null)
    {
        return $this->diffForHumans($since, $syntax, $short, $parts, $options);
    }
public function ago ( $ since = null , $ syntax = null , $ short = false , $ parts = 1 , $ options = null ) { return $ this -> diffForHumans ( $ since , $ syntax , $ short , $ parts , $ options ) ; }
Alias for diffForHumans.

@param  Date $since
@param  bool $syntax  Removes time difference modifiers ago, after, etc
@param  bool $short   (Carbon 2 only) displays short format of time units
@param  int  $parts   (Carbon 2 only) maximum number of parts to display (default value: 1: single unit)
@param  int  $options (Carbon 2 only) human diff options
@return string
Alias for diffForHumans .