Simple implementation method of counting the number of Chinese characters in PHP

This article mainly introduces the method of php to simply count the number of Chinese characters, involving strlen, mb_strlen and mb_strwidth and other functionsUsage methods and related Notes, friends in need can refer to

This article describes the simple method of counting the number of Chinese characters in PHP. I would like to share it with you for your reference. The details are as follows:

The previous company was engaged in foreign trade and all the data used were in English, so when counting the length, I used the strlen function, and there was always no error, but now the statistics are in Chinese. This went wrong, now do a recording test

<?php
echo strlen("你好ABC") . "";
# 输出 9
echo mb_strlen("你好ABC", &#39;UTF-8&#39;) . "";
# 输出 5
echo mb_strwidth("你好ABC") . "";
#输出 7
?>

From the above test, we can see:

strlen counts Chinese characters into 3 bytes

mb_strlen Regardless of Chinese or English, it is counted as 1 byte

mb_strwidth is counted as 2 bytes for Chinese

So use the mb_strlen function when calculating length

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