How to intercept the first digits of Chinese string in php

php method to intercept the first few digits of a Chinese string: first create a PHP sample file; then intercept the first few digits of the Chinese string through the "mb_substr($str,0,4,'utf-8');" method Just a few people.

#The operating environment of this article: Windows 7 system, PHP version 7.1, Dell G3 computer.

How to intercept the first digits of a Chinese string in php?

Chinese interception: mb_substr()

mb_substr( $str, $start, $length, $encoding )

$str, the string that needs to be truncated

$start, the starting point of truncation, the starting point is 0

$length, the number of words to be intercepted

$encoding, web page encoding, such as utf-8, GB2312, GBK

Example:

The code is as follows:

<?php
$str=&#39;快乐老家：https://www.xx.net&#39;;
echo mb_substr($str,0,4,&#39;utf-8&#39;);//截取头5个字，假定此代码所在php文件的编码为utf-8
?>

The results show: Happy Hometown

Recommended learning: "PHP Video Tutorial"

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