PHP mysqli character_set_name()方法

 PHP MySQLi 函数

PHP mysqli::character_set_name() / mysqli_character_set_name() 函数返回数据库连接的当前字符集。

语法

//面向对象风格
public mysqli::character_set_name()

//面向过程风格
mysqli_character_set_name(mysql) 

参数

返回值

返回连接的当前字符集。

示例:面向对象风格

下面的示例显示mysqli::character_set_name()的用法

<?php
//建立与数据库的连接
$mysqli = new mysqli("localhost", "user", "password", "database");
if ($mysqli->connect_errno) {
  echo "Failed to connect to MySQL: ". $mysqli->connect_error;
  exit();
}

//设置默认字符集
$mysqli->set_charset('utf8mb4');

//打印当前字符集
$charset = $mysqli->character_set_name();
printf("Current character set is: %s\n", $charset);

//关闭连接
$mysqli->close();
?> 

上述代码的输出将是:

Current character set is: utf8mb4 

示例:面向过程风格

下面的示例显示了mysqli_character_set_name() 函数的用法。

<?php
//建立与数据库的连接
$mysqli = mysqli_connect("localhost", "user", "password", "database");
if (mysqli_connect_errno()) {
  echo "Failed to connect to MySQL: ". mysqli_connect_error();
  exit();
}

//设置默认字符集
mysqli_set_charset($mysqli, 'utf8mb4');

//打印当前字符集
$charset = mysqli_character_set_name($mysqli);
printf("Current character set is: %s\n", $charset);

//关闭连接
mysqli_close($mysqli);
?> 

上述代码的输出将是:

Current character set is: utf8mb4