Laravel  
laravel
文档
数据库
架构
入门
php技术
    
Laravelphp
laravel / php / java / vue / mysql / linux / python / javascript / html / css / c++ / c#

mbsubstr php

作者:血舞悲鸣   发布日期:2025-03-19   浏览:454

The mb_substr() function in PHP is used to extract a substring from a given string. It is similar to the substr() function, but it supports multi-byte encoding.

The basic syntax of mb_substr() is as follows:

mb_substr(string $str, int $start [, int $length [, string $encoding = mb_internal_encoding() ]]): string|false
  • $str is the input string from which the substring will be extracted.
  • $start is the starting position of the substring. If it is positive, the counting starts from the beginning of the string. If it is negative, the counting starts from the end of the string.
  • $length (optional) specifies the length of the substring to be extracted. If not provided, it will extract all characters from the starting position to the end of the string.
  • $encoding (optional) specifies the character encoding. If not provided, it uses the internal encoding set by mb_internal_encoding().

The function returns the extracted substring as a string, or false if an error occurs.

Example usage:

$str = "Hello, World!";
$substr = mb_substr($str, 7, 5); // Extracts "World"
echo $substr;

In this example, the mb_substr() function is used to extract the substring "World" starting from position 7 in the string "Hello, World!".

上一篇:php按钮控制(php单击按钮的几种实现方法)

下一篇:mac查看php版本(mac apache php)

大家都在看

php session用法

phpisset函数

php后端

php爬虫框架

php读取csv文件

php 三元表达式

php文件加密

php 拆分字符串

php pcntl

php ||

Laravel PHP 深圳智简公司。版权所有©2023-2043 LaravelPHP 粤ICP备2021048745号-3

Laravel 中文站