Similar text function syntax and usage in PHP-PHP Tutorial-php.cn

Similar text function syntax and usage in PHP

墨辰丷

Release： 2023-03-30 06:00:01

Original

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This article mainly introduces the syntax and usage of similar text function in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.

1, usage of similar_text

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

## The code is as follows:

echo similar_text(&#39;ly89cn&#39;, &#39;ly89&#39;);

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This outputs 4 because they have 4 equal characters

The code is as follows:

similar_text(&#39;ly89cn&#39;, &#39;ly89&#39;, $percent);
echo $percent;

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This outputs 80, $percent represents the percentage, description They are 80% similar

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

The code is as follows:

echo similar_text(&#39;王业楼的个人博客&#39;, &#39;王业楼&#39;);
    这样输出9，表示他们的9个字节数相等

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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 of two strings and return the matching character Number:

The code is as follows:

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

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Running example

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

The code is as follows:

similar_text(string1,string2,percent)

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参数	描述
string1	必需。规定要比较的第一个字符串。
string2	必需。规定要比较的第二个字符串。
percent	可选。规定供存储百分比相似度的变量名。

Technical details

Return value:	Returns the number of matching characters in the two strings.
PHP version:	4

##More examples

Example 1

Calculate the percentage similarity between two strings:

The code is as follows:

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

Summary: The above is the summary of this article All content, I hope it will be helpful to everyone's study.

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