PHP - Manual: mb_internal_encoding

2024-11-14

mb_language »

« mb_http_output

mb_internal_encoding

(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

mb_internal_encoding — 设置/获取内部字符编码

说明

mb_internal_encoding(string $encoding = mb_internal_encoding()): mixed

设置/获取内部字符编码

参数

encoding: encoding 字符编码名称使用于 HTTP 输入字符编码转换、HTTP 输出字符编码转换、mbstring 模块系列函数字符编码转换的默认编码。 You should notice that the internal encoding is totally different from the one for multibyte regex.

返回值

如果设置了 encoding，则成功时返回 true，或者在失败时返回 false。 In this case, the character encoding for multibyte regex is NOT changed. 如果省略了 encoding，则返回当前的字符编码名称。

范例

示例 #1 mb_internal_encoding() 例子


<?php
/* 设置内部字符编码为 UTF-8 */
mb_internal_encoding("UTF-8");

/* 显示当前的内部字符编码*/
echo mb_internal_encoding();
?>

参见

mb_http_input() - 检测 HTTP 输入字符编码
mb_http_output() - 设置/获取 HTTP 输出字符编码
mb_detect_order() - 设置/获取字符编码的检测顺序
mb_regex_encoding() - Set/Get character encoding for multibyte regex

add a note

User Contributed Notes 7 notes

down

Joachim Kruyswijk ¶

16 years ago


Especially when writing PHP scripts for use on different servers, it is a very good idea to explicitly set the internal encoding somewhere on top of every document served, e.g.

mb_internal_encoding("UTF-8");

This, in combination with mysql-statement "SET NAMES 'utf8'", will save a lot of debugging trouble. 

Also, use the multi-byte string functions instead of the ones you may be used to, e.g. mb_strlen() instead of strlen(), etc.

down

webfav at web dot de ¶

6 years ago


all together 

<?php
// ------------------------------------------------------------ 

header('Content-Type: text/html; charset=UTF-8');

mb_internal_encoding('UTF-8'); 
mb_http_output('UTF-8'); 
mb_http_input('UTF-8'); 
mb_regex_encoding('UTF-8'); 

// ------------------------------------------------------------ 
?>

down

mortoray at ecircle-ag dot com ¶

17 years ago


Be aware that the strings in your source files must match the encoding you specify by mb_internal_encoding.  It appears the Parser loads raw bytes from the file and refers to its internal encoding to determine their actual encoding.

To demonstrate, the following outputs as espected when the /source/ file is Latin-1 encoded:

<?php
    mb_internal_encoding("iso-8859-1");
    mb_http_output( "UTF-8" );
    ob_start("mb_output_handler");

    echo "???<br/>";

    ?>???

Now, a typical use of mb_internal_encoding is shown as follows.  Make the change to "utf-8" but leave the /source/ file encoding unchanged:

<?php
    mb_internal_encoding("UTF-8");
    mb_http_output( "UTF-8" );
    ob_start("mb_output_handler");

    echo "???<br/>";

    ?>???

The output will just show the <br/> tag and no text.

Save the file as UTF-8 encoding and then the results will be as expected.

down

mdirks at gulfstreamcoach dot com ¶

15 years ago


In response to mortoray at ecircle-ag dot com:

The characters display fine as long as you set the Encoding to something more "Latin 1" compatible (i.e. US-ACSII, ISO-8859-1, ISO-8859-1, or  Windows 1252). PHP.net auto-detects to UTF-8

down

Anonymous ¶

7 years ago


Note that mb_internal_encoding is not necessary in PHP 5.6

down

-5

john leborgne ¶

9 years ago


i noticed that setting mb_internal_encoding('UTF-8') in my global site config.inc.php, doesn't work in my classes : it reverse back to ISO-8859-1.
Adding the call to the constructor of my top site class resolve this.

down

-11

mortoray at ecircle-ag dot com ¶

17 years ago


To previous example, the PHP notes don't appear to support umlauted characters so there are question marks  (?) there instead of what should be umlauated oue.  Just substitute any high-order/accented character to see the effect.

add a note

官方地址：https://www.php.net/manual/en/function.mb-internal-encoding.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络 JAVA NoSQL 数据库面试 C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet ADORecordSet对象 adodb手册 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 Composer的Packagist资源 opcache预加载 mysql面试题 [鸟哥]PHP FFI详解 - 一种全新的PHP扩展方式 PHP7添加redis扩展 PHPstorm 里面Terminal 不能使用 esc键吗退出编辑模式吗 php设置cookie为httponly防止xss攻击 PHP mkdir()写出来的权限与mode值不符合支持php7的性能采集扩展 adodb连接mysql多个数据库的问题

略微加速

PHP官方手册 - 互联网笔记

mb_internal_encoding

说明

参数

返回值

范例

参见

User Contributed Notes 7 notes