mysqli 设定字符集连接
mysqli::set_charset
mysqli_set_charset
(PHP 5 >= 5.0.5)
mysqli::set_charset -- mysqli_set_charset — Sets the default client character set
说明
面向对象风格
bool mysqli::set_charset ( string $charset )
过程化风格
bool mysqli_set_charset ( mysqli $link , string $charset )
Sets the default character set to be used when sending data from and to the database server.
参数
link
仅以过程化样式:由 mysqli_connect() 或 mysqli_init() 返回的链接标识。
charset
The charset to be set as default.
返回值
成功时返回 TRUE, 或者在失败时返回 FALSE.
注释
Note:
To use this function on a Windows platform you need MySQL client library version 4.1.11 or above (for MySQL 5.0 you need 5.0.6 or above).
Note:
This is the preferred way to change the charset. Using mysqli::query() to execute SET NAMES .. is not recommended.
范例
Example #1 mysqli::set_charset() example
面向对象风格
1 <?php 2 $mysqli = new mysqli("localhost", "my_user", "my_password", "test"); 3 4 /* check connection */ 5 if (mysqli_connect_errno()) { 6 printf("Connect failed: %s\n", mysqli_connect_error()); 7 exit(); 8 } 9 10 /* change character set to utf8 */ 11 if (!$mysqli->set_charset("utf8")) { 12 printf("Error loading character set utf8: %s\n", $mysqli->error); 13 } else { 14 printf("Current character set: %s\n", $mysqli->character_set_name()); 15 } 16 17 $mysqli->close(); 18 ?>
过程化风格
1 <?php 2 $link = mysqli_connect('localhost', 'my_user', 'my_password', 'test'); 3 4 /* check connection */ 5 if (mysqli_connect_errno()) { 6 printf("Connect failed: %s\n", mysqli_connect_error()); 7 exit(); 8 } 9 10 /* change character set to utf8 */ 11 if (!mysqli_set_charset($link, "utf8")) { 12 printf("Error loading character set utf8: %s\n", mysqli_error($link)); 13 } else { 14 printf("Current character set: %s\n", mysqli_character_set_name($link)); 15 } 16 17 mysqli_close($link); 18 ?>
以上例程会输出:
Current character set: utf8
参见
- § mysqli_character_set_name() - Returns the default character set for the database connection
- § mysqli_real_escape_string() - Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connection
- § » List of character sets that MySQL supports