来自MySQL数据库的字符的UTF-8问题(例如é作为é) [英] UTF-8 problems with characters from MySQL database (e.g. é as é)

问题描述

我知道有关UTF-8问题的数百个问题，但我尝试了所有可以找到的方法，但没有一个有帮助.

I know there are hundreds of questions about UTF-8 woes but I tried all the approaches I could find, none of them helped.

事实: 我正在尝试从MySQL数据库中读取包含é的字符串，并将其显示在PHP页面上.实际上，它的确显示为é(但字体不能这样识别，因此使用了另一种默认字体).当我想使用PHP函数将字符串转换为文件名来替换字符串时，出现了麻烦. PHP根本不认为这是é字符.

The facts: I'm trying to read a string that contains a é from my MySQL database and display it on a PHP page. Actually, it does display as é (but the font does not recognize it as such and thus another default font is used). The troubles arose when I wanted to convert this string to a filename using PHP functions for string replacement. PHP does not recognize this as the é character at all.

以下是我正在做的事情的简要介绍:

Here's a quick rundown of what I'm doing:

1)字符串存储在MySQL数据库中. MySQL服务器设置为: MySQL连接整理utf8_unicode_ci
MySQL字元集:UTF-8 Unicode(utf8)
数据库本身设置为排序规则utf8_unicode_ci(MyISAM存储引擎，由于共享服务器而无法更改)
实际表设置为collcation utf8_unicode_ci(InnoDB存储引擎)

1) The String is stored in a MySQL database. The MySQL server settings are: MySQL connection collation utf8_unicode_ci
MySQL charset: UTF-8 Unicode (utf8)
The database itself is set to collation utf8_unicode_ci (MyISAM storage engine, not changeable due to shared server)
The actual table is set to collcation utf8_unicode_ci (InnoDB storage engine)

é在phpMyAdmin中正确显示.数据是通过Java程序插入数据库的，但我也尝试过使用手动输入的数据(在phpMyAdmin中输入)进行此操作.

The é shows up correctly in phpMyAdmin. The data is inserted into the DB via a Java program but I have also tried this with manually entered data (entered in phpMyAdmin).

2)未设置PHP default_charset(无值)，我在共享服务器上，放置手动替代php.ini似乎不起作用.使用ini_set("default_charset", 'utf-8');可行，但是对我遇到的问题没有影响.

2) The PHP default_charset is not set (NO VALUE), I'm on a shared server and placing a manual override php.ini did not seem to work. Using ini_set("default_charset", 'utf-8'); works but has no effect on the problem I have.

3)在运行实际的选择查询之前，我先查询SET NAMES 'utf8'.查询本身无关紧要，但是为了进行测试，我选择了一个简单的SELECT title FROM items WHERE item_id = 1

3) Before I run the actual select query I query SET NAMES 'utf8'. The query itself is irrelevant but for testing I chose a simple SELECT title FROM items WHERE item_id = 1

4)PHP文件本身已编码为UTF-8.我已经使用<meta http-equiv="content-type" content="text/html; charset=utf-8" />

4) The PHP file itself is encoded UTF-8. I have set the correct charset for the html with <meta http-equiv="content-type" content="text/html; charset=utf-8" />

5)为了测试问题，我在返回的字符串(Astérix)上使用了htmlentities，检查将其转换为Astérix的源代码，这当然是不正确的.因此，该字符串在浏览器中显示为Astérix.

5) To test the problem I used htmlentities on the returned string (Astérix), checking the source code it is converted to Astérix which is not correct of course. Accordingly, the string shows up as Astérix in the browser.

这可能是什么原因?对我来说，似乎我将所有可以设置为UTF-8的内容都设置了.

What possible reason could there be for this? To me it seems like I set everything that can be set to UTF-8.

推荐答案

http://php.net/manual/en/ref.mbstring.php -查看多字节字符串函数.

http://php.net/manual/en/ref.mbstring.php - look at multibyte string functions.

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