original_string: function compute_string_distance( $string1, $string2 ) {
  		// Vectors containing character frequency for all chars in each string
  		$chars1 = count_chars($string1);
  		$chars2 = count_chars($string2);
  
  		// L1-norm of difference vector.
  		$difference = array_sum( array_map( array(&$this, 'difference'), $chars1, $chars2 ) );
  
  		// $string1 has zero length? Odd.  Give huge penalty by not dividing.
  		if ( !$string1 )
  			return $difference;
  
  		// Return distance per charcter (of string1)
  		return $difference / strlen($string1);
  	}
code: function compute_string_distance( $string1, $string2 ) {
  		// Vectors containing character frequency for all chars in each string
  		$chars1 = count_chars($string1);
  		$chars2 = count_chars($string2);
  
  		// L1-norm of difference vector.
  		$difference = array_sum( array_map( array(&$this, 'difference'), $chars1, $chars2 ) );
  
  		// $string1 has zero length? Odd.  Give huge penalty by not dividing.
  		if ( !$string1 )
  			return $difference;
  
  		// Return distance per charcter (of string1)
  		return $difference / strlen($string1);
  	}
code_tokens: function compute_string_distance ( $ string1 , $ string2 ) { // Vectors containing character frequency for all chars in each string
   $ chars1 = count_chars ( $ string1 ) ; $ chars2 = count_chars ( $ string2 ) ; // L1-norm of difference vector.
   $ difference = array_sum ( array_map ( array ( & $ this , 'difference' ) , $ chars1 , $ chars2 ) ) ; // $string1 has zero length? Odd.  Give huge penalty by not dividing.
   if ( ! $ string1 ) return $ difference ; // Return distance per charcter (of string1)
   return $ difference / strlen ( $ string1 ) ; }
docstring: Computes a number that is intended to reflect the "distance" between two strings.
  
  @since 2.6.0
  
  @param string $string1
  @param string $string2
  @return int
docstring_tokens: Computes a number that is intended to reflect the distance between two strings .