framework/base/CSecurityManager.php
private function substr($string,$start,$length)
	{
		return $this->_mbstring ? mb_substr($string,$start,$length,'8bit') : substr($string,$start,$length);
	}
private function substr($string,$start,$length)
	{
		return $this->_mbstring ? mb_substr($string,$start,$length,'8bit') : substr($string,$start,$length);
	}
private function substr ( $ string , $ start , $ length ) { return $ this -> _mbstring ? mb_substr ( $ string , $ start , $ length , '8bit' ) : substr ( $ string , $ start , $ length ) ; }
Returns the portion of string specified by the start and length parameters.
If available uses the multibyte string function mb_substr
@param string $string the input string. Must be one character or longer.
@param integer $start the starting position
@param integer $length the desired portion length
@return string the extracted part of string, or FALSE on failure or an empty string.
Returns the portion of string specified by the start and length parameters . If available uses the multibyte string function mb_substr