mysqli::set_charset

定义和用法

set_charset() / mysqli_set_charset() 函数指定在与数据库服务器发送和接收数据时使用的默认字符集。

注意：要在 Windows 平台上使用此函数，您需要 MySQL 客户端库 4.1.11 或更高版本（对于 MySQL 5.0，您需要 5.0.6 或更高版本）。

实例

例子 1 - 面向对象风格

更改默认客户端字符集：

<?php
$mysqli = new mysqli("localhost","my_user","my_password","my_db");

if ($mysqli -> connect_errno) {
  echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
  exit();
}

echo "Initial character set is: " . $mysqli -> character_set_name();

// 将字符集更改为 utf8
$mysqli -> set_charset("utf8");

echo "Current character set is: " . $mysqli -> character_set_name();

$mysqli -> close();
?>

例子 2 - 过程式风格

更改默认客户端字符集：

<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");

// 检查连接
if (mysqli_connect_errno()) {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  exit;
}

echo "Initial character set is: " . mysqli_character_set_name($con);

// 将字符集更改为 utf8
mysqli_set_charset($con,"utf8");

echo "Current character set is: " . mysqli_character_set_name($con);

mysqli_close($con);
?>