How to solve the Chinese garbled data displayed in the PHP database

PHP is a popular server-side scripting language that is ideal for working with web applications. In PHP applications, it is often necessary to retrieve and display data from a database. However, when PHP tries to retrieve Chinese characters from the database, it may encounter the so-called "garbled" problem. This article will introduce how to solve the problem of Chinese garbled characters in PHP displaying database data.

1. Determine the database encoding method

First, determine the character encoding used by the database. MySQL database uses "Latin1" encoding by default, which means it can only correctly handle Western characters, such as English. If your database contains Chinese or other non-Latin scripts, you need to consider changing the database encoding. In MySQL, you can use the following command to modify the character set of the database:

ALTER DATABASE dbName CHARACTER SET utf8;

where "dbName" is your database name, "utf8" is a commonly used Unicode character set, which supports multiple language characters , including Chinese.

2. Determine the encoding of the table

After determining the encoding of the database, you need to check the character set of the table. If the character set of the table is inconsistent with the character set of the database, problems will occur. You can check the character set of a table using the following command:

SHOW CREATE TABLE tableName;

where "tableName" is the name of your table. In the results, you will see the following information:

CREATE TABLE tableName (
 id int(11) NOT NULL,
 name varchar(50) CHARACTER SET utf8 NOT NULL,
 age int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

As you can see, the "name" field in this table uses the "utf8" character set. If you find that the character set of the table is inconsistent with the character set of the database, please use the following command to change the character set of the table:

ALTER TABLE tableName CONVERT TO CHARACTER SET utf8;

3. Set the character set in the PHP script

Even if the character set of the database and table is configured correctly, the PHP script still needs to set the character set correctly to correctly interpret Chinese characters in the database. Normally, PHP uses the ISO-8859-1 character set by default, which is an ASCII extended character set and does not support Chinese. Therefore, we need to specify the character set explicitly in the script. You can set your PHP script to the "utf-8" character set using a command like this:

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

Add this command to the beginning of your PHP script.

4. Set the database connection to "utf-8" in the PHP script

Finally, in the PHP script, you need to ensure that the database connection Set to "utf-8" character set. You can set this option in the database connection code of the PHP script, for example:

$conn = mysql_connect($dbhost, $dbuser, $dbpass);
mysql_select_db($dbname, $conn);
mysql_query("SET NAMES 'utf8'", $conn);

In this way, PHP will correctly interpret the Chinese characters in the database and avoid garbled characters.

In PHP applications, it is very important to correctly handle and display Chinese data. Following the above steps, you can set up PHP scripts and databases to ensure that Chinese data is processed and displayed correctly and to avoid garbled characters.

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