original_string: function conv($str, $fromCS, $toCS, $useEntityForNoChar = 0) {
  		if ($fromCS == $toCS) {
  			return $str;
  		}
  
  			// PHP-libs don't support fallback to SGML entities, but UTF-8 handles everything
  		if ($toCS == 'utf-8' || !$useEntityForNoChar) {
  			switch ($GLOBALS['TYPO3_CONF_VARS']['SYS']['t3lib_cs_convMethod']) {
  				case 'mbstring':
  					$conv_str = mb_convert_encoding($str, $toCS, $fromCS);
  					if (FALSE !== $conv_str) {
  						return $conv_str;
  					} // returns FALSE for unsupported charsets
  					break;
  
  				case 'iconv':
  					$conv_str = iconv($fromCS, $toCS . '//TRANSLIT', $str);
  					if (FALSE !== $conv_str) {
  						return $conv_str;
  					}
  					break;
  
  				case 'recode':
  					$conv_str = recode_string($fromCS . '..' . $toCS, $str);
  					if (FALSE !== $conv_str) {
  						return $conv_str;
  					}
  					break;
  			}
  			// fallback to TYPO3 conversion
  		}
  
  		if ($fromCS != 'utf-8') {
  			$str = $this->utf8_encode($str, $fromCS);
  		}
  		if ($toCS != 'utf-8') {
  			$str = $this->utf8_decode($str, $toCS, $useEntityForNoChar);
  		}
  		return $str;
  	}
code: function conv($str, $fromCS, $toCS, $useEntityForNoChar = 0) {
  		if ($fromCS == $toCS) {
  			return $str;
  		}
  
  			// PHP-libs don't support fallback to SGML entities, but UTF-8 handles everything
  		if ($toCS == 'utf-8' || !$useEntityForNoChar) {
  			switch ($GLOBALS['TYPO3_CONF_VARS']['SYS']['t3lib_cs_convMethod']) {
  				case 'mbstring':
  					$conv_str = mb_convert_encoding($str, $toCS, $fromCS);
  					if (FALSE !== $conv_str) {
  						return $conv_str;
  					} // returns FALSE for unsupported charsets
  					break;
  
  				case 'iconv':
  					$conv_str = iconv($fromCS, $toCS . '//TRANSLIT', $str);
  					if (FALSE !== $conv_str) {
  						return $conv_str;
  					}
  					break;
  
  				case 'recode':
  					$conv_str = recode_string($fromCS . '..' . $toCS, $str);
  					if (FALSE !== $conv_str) {
  						return $conv_str;
  					}
  					break;
  			}
  			// fallback to TYPO3 conversion
  		}
  
  		if ($fromCS != 'utf-8') {
  			$str = $this->utf8_encode($str, $fromCS);
  		}
  		if ($toCS != 'utf-8') {
  			$str = $this->utf8_decode($str, $toCS, $useEntityForNoChar);
  		}
  		return $str;
  	}
code_tokens: function conv ( $ str , $ fromCS , $ toCS , $ useEntityForNoChar = 0 ) { if ( $ fromCS == $ toCS ) { return $ str ; } // PHP-libs don't support fallback to SGML entities, but UTF-8 handles everything if ( $ toCS == 'utf-8' || ! $ useEntityForNoChar ) { switch ( $ GLOBALS [ 'TYPO3_CONF_VARS' ] [ 'SYS' ] [ 't3lib_cs_convMethod' ] ) { case 'mbstring' : $ conv_str = mb_convert_encoding ( $ str , $ toCS , $ fromCS ) ; if ( FALSE !== $ conv_str ) { return $ conv_str ; } // returns FALSE for unsupported charsets break ; case 'iconv' : $ conv_str = iconv ( $ fromCS , $ toCS . '//TRANSLIT' , $ str ) ; if ( FALSE !== $ conv_str ) { return $ conv_str ; } break ; case 'recode' : $ conv_str = recode_string ( $ fromCS . '..' . $ toCS , $ str ) ; if ( FALSE !== $ conv_str ) { return $ conv_str ; } break ; } // fallback to TYPO3 conversion } if ( $ fromCS != 'utf-8' ) { $ str = $ this -> utf8_encode ( $ str , $ fromCS ) ; } if ( $ toCS != 'utf-8' ) { $ str = $ this -> utf8_decode ( $ str , $ toCS , $ useEntityForNoChar ) ; } return $ str ; }
docstring: Convert from one charset to another charset.
  
  @param	string		Input string
  @param	string		From charset (the current charset of the string)
  @param	string		To charset (the output charset wanted)
  @param	boolean		If set, then characters that are not available in the destination character set will be encoded as numeric entities
  @return	string		Converted string
  @see convArray()
docstring_tokens: Convert from one charset to another charset .