How to solve the problem of garbled characters displayed in Chinese in PHP program

The display of garbled Chinese characters in PHP programs is a common problem that many beginners will encounter. This article will introduce how to solve this problem from multiple aspects such as PHP code parsing, character set settings, database connections, and file encoding.

1. PHP code analysis

In PHP programs, Chinese characters are generally stored in UTF-8 format. However, if the PHP parser does not support UTF-8 format, Chinese garbled characters will appear. Therefore, we need to specify the character set encoding in the PHP code so that the parser can correctly parse Chinese characters.

Add the following code in the PHP code:

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

The function of this code is to specify the HTML encoding of the web page to UTF-8 so that the browser can correctly display Chinese characters.

2. Character set setting

In the PHP program, the default character set is ISO-8859-1. If your website uses UTF-8 encoding, you need to set the character set to UTF-8.

This problem can be solved by setting the php.ini file. Open the php.ini file and find the following code:

;default_charset = "UTF-8"

Remove the semicolon and change UTF-8 to the character set used by your website. After saving the file, restart the PHP service.

3. Database connection

If your website uses a database to store data, the problem of garbled Chinese characters may occur in the database connection. In general, the character sets used by the database and the PHP program need to be consistent.

When connecting to the database, you can set the connection character set through the following code:

mysqli_set_charset($link, "utf8");

Among them, $link is the database connection instance, and "utf8" is the character set name.

4. File Encoding

If your PHP file is stored in UTF-8 format, but Chinese garbled characters appear on the web page, it may be a file encoding problem. .

When using a PHP editor to edit PHP files, the default file encoding may be "ANSI" or "GBK". In order to avoid Chinese garbled characters, the file encoding needs to be set to UTF-8.

In the editor, find the "Save As" option, change the encoding method to "UTF-8" and save the file.

Summary

Garbled Chinese characters are a common problem in PHP programs, but by taking certain measures, we can effectively avoid this problem. First, specify the character set encoding in the PHP code; second, set the character set in the php.ini file; then, set the connection character set when connecting to the database; finally, set the PHP file encoding to UTF-8. As long as you master the above points, you can easily solve the problem of garbled Chinese characters.

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