Wechat php Chinese garbled code

WeChat is currently one of the most popular social software and is widely used in personal and business scenarios. For WeChat public account development, we often need to use PHP language to write programs. However, some developers may encounter the problem of garbled Chinese characters in WeChat PHP. This problem has always been a problem that has plagued the majority of developers.

What are Chinese garbled characters?

Chinese garbled characters refer to the phenomenon that when Chinese characters are processed in the program, Chinese characters are displayed incorrectly due to inconsistent or incorrect character encoding. A common manifestation of garbled characters is that Chinese characters are replaced by some strange symbols or question marks, making it difficult to see clearly the content originally intended to be displayed.

How to solve the Chinese garbled problem of WeChat PHP?

To solve the problem of Chinese garbled characters in WeChat PHP, we need to start from the following aspects:

1. Unified encoding

Character encoding is the key to solving the problem of Chinese garbled characters. We need to unify the encoding of all characters in the program to ensure that they all use the same character encoding method.

Currently the most common character encoding method for Chinese is UTF-8, which is also the encoding method recommended by WeChat public accounts. If you use other encodings in your program, you need to convert them to UTF-8.

In PHP, you can use the iconv() function to achieve encoding conversion. For example:

$str = iconv('GBK', 'UTF-8', $str);

This code converts $str from GBK encoding to UTF-8 encoding.

2. Encoding settings during data transmission

Data transmission between the client and the server also requires attention to Chinese encoding issues. After setting the encoding on the server side, you need to ensure that the encoding on the client side and the server side are consistent to avoid the problem of Chinese garbled characters.

In WeChat public accounts, we usually use the POST method to transmit data to the server. When using POST to transmit data, you need to set the Content-Type header information and specify the encoding method as UTF-8. For example:

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

3. Unify the database character set

If used in the program Database, then the character encoding of the database also needs to be UTF-8. When creating a database table, you need to set the character set to utf8, and you also need to ensure that the encoding of each field in the table is consistent with the table. If there are garbled characters in the database, you can modify the character set of the table through the ALTER TABLE statement.

ALTER TABLE table_name CONVERT TO CHARACTER SET utf8;

This command changes the character set of the table_name table to UTF-8.

4. Use the htmlentities() function

When outputting Chinese characters to the client, we also need to pay attention to using the htmlentities() function to escape special characters to avoid XSS attacks. . For example:

echo htmlentities($str, ENT_QUOTES, 'UTF-8');

This code escapes the special characters in $str.

Summary

The problem of Chinese garbled characters is a common problem in program development, especially in Chinese applications, it is everywhere. Regarding the problem of Chinese garbled characters in WeChat PHP, we need to pay attention to four aspects: unified encoding, encoding settings during data transmission, unified database character set, and using the htmlentities() function to process special characters. Only by paying attention to these problems can we avoid the inconvenience and trouble caused by Chinese garbled characters.

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