Detailed solution to the problem of PHP MySQL garbled characters

Solving the PHP MySQL garbled problem is a common problem that many developers encounter in their projects. The garbled code problem occurs mainly due to the inconsistency of different encoding formats in the server, database and code. In actual development, it is necessary to match the correct solution to effectively avoid the occurrence of garbled code problems. This article will analyze in detail the solution to the PHP MySQL garbled problem and provide specific code examples.

1. Database encoding settings
First, make sure the encoding settings of the database are correct. When creating a database, the default encoding of the database should be set to UTF-8 to avoid garbled characters during data insertion and query.

CREATE DATABASE dbname CHARACTER SET UTF8 COLLATE utf8_general_ci;

2. Data table encoding setting
When creating a data table, you also need to pay attention to setting the correct encoding format. You can specify the encoding format as UTF-8 when creating the table, which ensures that the data in the data table can be stored and read normally.

CREATE TABLE tablename (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(50) CHARACTER SET utf8,
    content TEXT CHARACTER SET utf8
);

3. Set the encoding when connecting to the database
When using PHP to connect to the MySQL database, you need to set the connection character set to UTF-8. This can be achieved through the following code examples:

$mysqli = new mysqli("localhost", "username", "password", "dbname");
$mysqli->set_charset("utf8");

4. Set encoding during data transmission
When performing data query, insertion, update and other operations, you also need to pay attention to setting the encoding format of data transmission to UTF-8. It can be set through the following code example:

mysqli_query($mysqli, "SET NAMES 'utf8'");

5. Encoding of data processing
When fetching data from the database, sometimes garbled characters will occur. The encoding format of data can be processed through the following code example:

$result = mysqli_query($mysqli, "SELECT * FROM tablename");
while($row = $result->fetch_assoc()) {
    $name = utf8_encode($row['name']);
    $content = utf8_encode($row['content']);
    echo "Name: $name, Content: $content <br>";
}

Summary
Through the above solutions, we can effectively solve the PHP MySQL garbled problem. During the development process, it is very important to ensure that the encoding formats of databases, data tables, connections, and data transmission are all set to UTF-8. At the same time, when processing data retrieved from the database, you also need to pay attention to the encoding format of the data. Through these methods, we can avoid the occurrence of garbled characters and make the storage and display of data more accurate and standardized. I hope the content of this article can help developers who need to solve the problem of PHP MySQL garbled code.

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