Use PHP similar text to calculate the similarity of two strings, similartext_PHP tutorial

Use PHP similar text to calculate the similarity of two strings, similartext

In website development, we often use php similar text to calculate the similarity of two strings;

1, usage of similar_text

If I want to calculate the similarity between "ly89cn" and "ly89", there are two ways to express it

Copy code The code is as follows:
echo similar_text('ly89cn', 'ly89');

This outputs 4 because they have 4 equal characters

Copy code The code is as follows:
similar_text('ly89cn', 'ly89', $percent);
echo $percent;

This outputs 80, $percent represents the percentage, indicating that they are 80% similar

Of course, you can also compare two Chinese characters, such as "Wang Yelou's personal blog" and "Wang Yelou"

Copy code The code is as follows:
echo similar_text('Wang Yelou's personal blog', 'Wang Yelou');

Output 9 like this, indicating that their 9 bytes are equal

Copy code The code is as follows:
similar_text('Wang Yelou's personal blog', 'Wang Yelou', $percent);
echo $percent;

Output 54.545454545455, please note that Chinese characters may not be accurate!

PHP similar_text() function

Example

Calculate the similarity between two strings and return the number of matching characters:

Copy code The code is as follows:
echo similar_text("Hello World","Hello Shanghai");
?>

Running instance

Definition and usage

The similar_text() function calculates the similarity of two strings.

This function can also calculate the percentage similarity of two strings.

Note: levenshtein() function is faster than similar_text() function. However, the similar_text() function provides more accurate results with fewer modifications required.

Grammar

Copy code The code is as follows:
similar_text(string1,string2,percent)

Parameters	Description
string1	Required. Specifies the first string to compare.
string2	Required. Specifies the second string to be compared.
percent	Optional.规定供存储百分比相似度的变量名。

技术细节

 

返回值：

返回值：	返回两个字符串的匹配字符的数目。
PHP 版本：	4

返回两个字符串的匹配字符的数目。

PHP 版本：

4

更多实例 例子 1
计算两个字符串之间的百分比相似度：



复制代码

代码如下:

similar_text("Hello World","Hello Shanghai",$percent); echo $percent. "%"; ?> http://www.bkjia.com/PHPjc/1068822.htmlwww.bkjia.comtrue

http://www.bkjia.com/PHPjc/1068822.html

TechArticle

使用PHP similar text计算两个字符串相似度，similartext 在网站开发中，我们经常使用php similar text 计算两个字符串相似度; 1,similar_text的用法 如...