How to solve the garbled problem of php web page

With the popularity of the Internet, more and more websites use PHP language to build their website development, and PHP has become a popular choice for many website developers. However, in the development process of PHP, a troublesome problem often occurs: garbled characters. Especially in Web pages, the problem of garbled characters is even more common. The following article will explain the garbled problem of PHP Web pages based on actual cases.

1. The phenomenon and causes of garbled characters

In Web development, the phenomenon of garbled characters is relatively common, especially when dealing with Chinese characters, the problem of garbled characters often occurs. When garbled characters appear on a web page, what we see is a bunch of garbled characters instead of normal Chinese

. So, why do garbled characters appear? The main reasons are as follows:

1. Character set problem: For a character to be displayed correctly, the same character set needs to be used in both the server and the browser.

2. Differences in encoding methods: Commonly used encoding methods include GBK, UTF-8, ISO-8859-1, etc. If different encoding methods are used on both sides, it will cause garbled code problems.

2. Solutions to garbled codes

Don’t panic if you encounter garbled web pages. The solution is actually relatively simple. Below we will use examples to teach you how to solve the problem of garbled web pages in PHP.

1. Set the character set in HTML

In the header of the web page template, set the character set through the meta tag, for example:

<meta charset="utf-8">

2. In the PHP file Set the character set in

At the beginning of the PHP file, use the header() function to set the character set, for example:

header("Content-type: text/html; charset=utf-8");

3. Set the encoding method of the text editor to UTF-8

If the code we edit in the text editor uses UTF-8 encoding, then we should also use UTF-8 encoding in the Web, otherwise garbled characters will occur.

4. Modify the character set of MySQL

If the data of the website comes from the MySQL database, then we also need to set the character set of MySQL to UTF-8 encoding. The character set can be set in the MySQL configuration file, for example:

[client]
default-character-set=utf8

[mysql]
default-character-set=utf8

[mysqld]
default-character-set=utf8

5. Use the iconv() or mb_convert_encoding() function to handle character set conversion

Sometimes we need to convert text from a Converting a character set to another character set can be processed using the iconv() or mb_convert_encoding() function. For example:

$output = iconv("GBK","UTF-8",$input);

$output = mb_convert_encoding($input, "UTF-8", "GBK");

6. Modify the Apache configuration file

If the above solutions fail, you can consider modifying the Apache configuration file httpd.conf. In the httpd.conf file, find the following settings:

AddDefaultCharset ISO-8859-1

Modify it to UTF-8 encoding:

AddDefaultCharset UTF-8

3. Avoid the occurrence of garbled code problems

The occurrence of garbled code problems When it happens, the most fundamental solution is to avoid it happening. In PHP web development, we can avoid the occurrence of garbled web pages through the following methods:

1. Unified character set

Use UTF on both sides of the server and browser -8 character set, which avoids the problem of character set conversion.

2. Use the correct coding method

In development, the coding method should be used uniformly. Usually UTF-8 encoding is the more commonly used encoding method.

3. Avoid using GBK encoding in the page

If you need to use GBK encoding in the page, it may cause different display effects on different clients. It is best to use UTF-8 encoding.

4. Avoid using GBK encoding in the database

By setting the encoding of MySQL to UTF-8, you can avoid the problem of garbled characters in the database.

Summary:

In PHP Web development, garbled code problems are inevitable. But there are ways we can address these issues. By unifying the character set, using the correct encoding method, avoiding the use of GBK encoding in the page, and avoiding the use of GBK encoding in the database, the occurrence of garbled code problems can be effectively avoided. When encountering garbled characters, we can set the character set in HTML, use the header() function to set the character set, set the text editor's encoding method to UTF-8, modify the MySQL character set, use iconv() or The mb_convert_encoding() function handles character set conversion, modifying Apache's configuration file and other methods to solve these problems.

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