Instructions for useLet's take a look at the levenshtein () function instructions in the manual:
The levenshtein () function returns the Levenshtein distance between two strings.
Levenshtein distance, also known as the editing distance, refers to
edit Distance definition :The editing distance, also known as the Levenshtein distance , is the minimum number of edit operations required between two strings, from one to another.Licensing edits include replacing one character with another,
This article will introduce the use of levenshtein, a similarity calculation function of PHP.
Let's take a look at the levenshtein () function instructions in the manual:
The levenshtein () function returns the Levenshtein distance between two
Instructions for useLet's take a look at the levenshtein () function instructions in the manual:
The levenshtein () function returns the Levenshtein distance between two strings.
Levenshtein distance, also known as the editing distance, refers to
The function is mainly used to calculate the number of matching characters for two strings, or to calculate the similarity between the two strings (expressed in percentages ). Compared with the similar_text () function, the levenshtein () function
TurnIt's not difficult to understand, but it's practical.The core formula is the following:(1)1. Introduction of Baidu Encyclopedia:Levenshtein distance, also known as the editing distance, refers to the minimum number of edit operations required
first, the concept
The edit distance of the string, also known as Levenshtein distance, was presented by Vladimir Levenshtein, a Russian mathematician, in 1965.Levenshtein distance is a string metric (string metric) that calculates the degree of
Title, the more detailed the better. Thanks, man.
levenshtein("Hello World","ello World");
It only takes 1 steps to add an ' H ' to the second argument! And of course return ' 1 '!This function is quite simple, but:
levenshtein("Hello World","ello
In the verification code to identify the need to compare the similarity of character code to the "editing distance algorithm", about the principle and C # implementation to make a record.According to Baidu Encyclopedia introduction:The editing
For example, the more detailed the question, the better. Thank you! {Code...}. It only requires adding & #039; H & #039; in the second parameter. Only one step is required! Of course, Return & #039; 1 & #039! This function is quite simple, but:
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