similar_text
(PHP 4, PHP 5)
similar_text — Calculate the similarity between two strings
Description
$first
, string $second
[, float &$percent
] )This calculates the similarity between two strings as described in Programming Classics: Implementing the World's Best Algorithms by Oliver (ISBN 0-131-00413-1). Note that this implementation does not use a stack as in Oliver's pseudo code, but recursive calls which may or may not speed up the whole process. Note also that the complexity of this algorithm is O(N**3) where N is the length of the longest string.
Parameters
-
first -
The first string.
-
second -
The second string.
-
percent -
By passing a reference as third argument, similar_text() will calculate the similarity in percent for you.
Return Values
Returns the number of matching chars in both strings.
See Also
- levenshtein() - Calculate Levenshtein distance between two strings
- soundex() - Calculate the soundex key of a string
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