original_string: function parse_charset($charset) {
  		$charset = trim(strtolower($charset));
  		if (isset($this->synonyms[$charset])) {
  			$charset = $this->synonyms[$charset];
  		}
  
  		return $charset;
  	}
code: function parse_charset($charset) {
  		$charset = trim(strtolower($charset));
  		if (isset($this->synonyms[$charset])) {
  			$charset = $this->synonyms[$charset];
  		}
  
  		return $charset;
  	}
code_tokens: function parse_charset ( $ charset ) { $ charset = trim ( strtolower ( $ charset ) ) ; if ( isset ( $ this -> synonyms [ $ charset ] ) ) { $ charset = $ this -> synonyms [ $ charset ] ; } return $ charset ; }
docstring: Normalize - changes input character set to lowercase letters.
  
  @param	string		Input charset
  @return	string		Normalized charset
  @author	Martin Kutschker <martin.t.kutschker@blackbox.net>
docstring_tokens: Normalize - changes input character set to lowercase letters .