Calculate the similarity between two strings using PHP similar text

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 "ly89cn" and "ly89" There are two ways to express the degree of similarity

echo similar_text('ly89cn', 'ly89');

This outputs 4, because they have 4 equal characters

similar_text('ly89cn', 'ly89', $percent);
echo $percent;

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

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

echo similar_text('王业楼的个人博客', '王业楼');

In this way, 9 is output, indicating their 9 bytes Equal

similar_text('王业楼的个人博客', '王业楼', $percent);
echo $percent;

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

PHP similar_text() function

Example

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

<?php
echo similar_text("Hello World","Hello Shanghai");
?>

Run Example

Definition and usage

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

similar_text(string1,string2,percent)

Technical details

More examples

Examples 1

Calculate the percentage similarity between two strings:

<?php
similar_text("Hello World","Hello Shanghai",$percent);
echo $percent. "%";
?>

For more related articles using PHP similar text to calculate the similarity of two strings, please pay attention to the PHP Chinese website!