How to get the first few characters of text in php

In PHP, you can use the "mb_substr" function to get the first few digits of a text. This function is used to return a part of a string. It is often used to split Chinese text. You can return the first few digits of a text string by setting parameters. bit, the syntax is "mb_substr("text",0,first few digits)".

The operating environment of this tutorial: windows10 system, PHP7.1 version, DELL G3 computer

How to get the first few digits of text in php

The mb_substr() function returns a part of the string. We have learned the substr() function before. It only targets English characters. If you want to split Chinese characters, you need to use mb_substr().

Note: If the start parameter is negative and length is less than or equal to start, length is 0.

Syntax

mb_substr ( string $str , int $start [, int $length = NULL [, string $encoding = mb_internal_encoding() ]] ) : string

The parameter settings are as follows:

The result returned is the extracted part of the string, and if it fails, it will be returned FALSE, or returns an empty string.

The example is as follows:

<?php
echo mb_substr("这是需要截取的文字前几位这是不需要截取的文字后几位", 0, 12);
// 输出：这是需要截取的文字前几位
?>

Output result:

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