code: function getAttribute($attr, $compare = 'total', $case_sensitive = false) {
  		$f = $this->findAttribute($attr, $compare, $case_sensitive);
  		if (is_array($f) && $f){
  			if (count($f) === 1) {
  				return $this->attributes[$f[0][2]];
  			} else {
  				$res = array();
  				foreach($f as $a) {
  					$res[] = $this->attributes[$a[2]];
  				}
  				return $res;
  			}
  		} else {
  			return null;
  		}
  	}
docs: Gets value(s) of attribute(s)
  @param string|int $attr Negative int to count from end
  @param string $compare Find node using "namespace", "name" or "total"
  @param bool $case_sensitive Compare with case sensitivity
  @return string|array