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String function Library: Levenshtein

Source: Internet
Author: User
Keywords levenshtein php Chinese Function Handbook
Tags aliyun function function library html http php php chinese function handbook php3
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Levenshtein

(PHP3 CVS only, PHP4 >= 4.0.1)

Levenshtein---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Computes the levenshtein-distance between two strings

Syntax: int Levenshtein (String str1, String str2)

Description:

This function returns the levenshtein-distance between two parameters, and returns 1 if the length of the argument exceeds the limit of 255 characters.

Levenshtein-distance is defined as the smallest number of characters you have to replace, insert, or delete to change str1 to become str2. The complexity of the algorithm is 0 (m*n), n is the length of the parameter str1, and M is the length of the parameter str2.

Reference: Soundex () Similar_text () Metaphone ()

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