mysql_client_encoding

Function name: mysql_client_encoding()

Applicable version: PHP 4 >= 4.0.6, PHP 5, PHP 7

Usage: The mysql_client_encoding() function is used to obtain the character set encoding of the currently connected MySQL client.

Syntax: string mysql_client_encoding ( [resource $link_identifier = NULL] )

parameter:

• link_identifier (optional): MySQL connection identifier, if not provided, the function tries to find a currently open connection to use.

Return value: Returns the MySQL client character set encoding of the current connection, and returns false if the connection is not opened.

Example:

 // 创建MySQL 连接$link = mysql_connect("localhost", "username", "password"); // 检查连接是否成功if (!$link) { die("连接数据库失败：" . mysql_error()); } // 获取当前连接的MySQL 客户端字符集编码$encoding = mysql_client_encoding($link); // 打印结果echo "当前连接的MySQL 客户端字符集编码是：" . $encoding; // 关闭连接mysql_close($link);

Notes:

• This function is deprecated in PHP 5.5.0 and is removed in PHP 7.0.0. It is recommended to use mysqli or PDO extensions instead of mysql extensions.
• If the connection identifier parameter is not provided, the function tries to use the recently opened connection.
• After successfully connecting to the MySQL database, you can use this function to check the character set encoding of the currently connected to ensure that the correct character set is used when interacting with the database.
• If the connection is not open, the function returns false.
• You can set the default client character set encoding by modifying the configuration file of the MySQL server.