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# similar_text

(3.0.7 - 3.0.18 only, PHP 4 >= 4.0.0)

similar_text -- Calculate the similarity between two strings

## Description

``int similar_text` (string first, string second [, float percent])`

This calculates the similarity between two strings as described in Oliver [1993]. 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.

By passing a reference as third argument, similar_text() will calculate the similarity in percent for you. It returns the number of matching chars in both strings.

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