How does PHP solve the problem of Chinese garbled characters in the database?

In the process of using PHP to interact with the database, the problem of Chinese garbled characters is one of the common challenges. This article will introduce how to solve the problem of Chinese garbled characters in the database through PHP, and provide specific code examples.

Problem background:

When accessing data with the database, Chinese characters may appear garbled, making the data difficult to read or losing its original meaning. This is mainly due to character encoding mismatch between the database and PHP code.

Solution:

In order to solve the problem of Chinese garbled characters in the database, you need to pay attention to the following aspects:

1. Database character set setting: First , you need to ensure that the character set of the database is set to support encoding for Chinese storage, such as utf8mb4. It can be set through the following SQL statement:

ALTER DATABASE database_name CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

2. Table character set setting: Make sure the character set of the relevant table is consistent with the database and set to utf8mb4, the method is as follows:

ALTER TABLE table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

3. Connection character set setting: In the PHP code, you need to set the character set to utf8mb4## when connecting to the database #, the example is as follows:

$mysqli = new mysqli("localhost", "username", "password", "database_name");
$mysqli->set_charset("utf8mb4");

4. Data transfer encoding setting: Before executing the SQL query, convert the string to utf8mb4 encoding, example As follows:

mysqli_set_charset($mysqli, "utf8mb4");

5. Data display settings: When reading data from the database for display, you need to ensure that the encoding of the page is also utf8mb4 , an example is as follows:

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

Through the above method, the problem of Chinese garbled characters in the database can be effectively solved and the normal storage and display of data can be ensured.

Conclusion:

In the process of interacting with the database, it is very important to ensure the consistency of character encoding to avoid problems such as Chinese garbled characters. Through the methods and code examples provided in this article, I believe readers can better process Chinese characters in the database and improve the accuracy and reliability of data processing.

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