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String function Library: Similar_text

Source: Internet
Author: User
Keywords PHP Chinese function Manual Similar_text
Tags aliyun function function library html http php php chinese function manual php3
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Similar_text

(PHP3 >= 3.0.7, PHP4 >= 4.0b2)

Similar_text---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Compute the similarity between two strings

Syntax: int Similar_text (String A, string second [, double percent])

Description:

Calculates the similarity between two strings, described in Oliver [1993]. This execution does not use stack (stack) in the Oliver-assumed code (pseudo code), but recursive calls may speed up all processing, the complexity of which is 0 (n**3), and N is the length of the longest string.

Passing the third argument to the function, Similar_text () calculates the similarity expressed as a percentage, which returns the number of strings that match between two strings.

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