PHP mysqli change_user() 函数
示例 - 面向对象的样式
改变指定数据库连接的用户：
<?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();
}
// Reset all and select a new database
$mysqli -> change_user("my_user", "my_password", "test");
$mysqli -> close();
?>
$mysqli = new mysqli("localhost","my_user","my_password","my_db");
if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}
// Reset all and select a new database
$mysqli -> change_user("my_user", "my_password", "test");
$mysqli -> close();
?>
查看底部的程序样式示例。
定义和用法
change_user() / mysqli_change_user() 函数改变指定数据库连接的用户，并设置当前数据库。
语法
面向对象的风格：
$mysqli -> change_user(username, password, dbname)
程序风格：
mysqli_change_user(connection, username, password, dbname)
参数值
| 参数 | 描述 |
|---|---|
| connection | 必需。规定要使用的 MySQL 连接。 |
| username | 必需。规定 MySQL 用户名。 |
| password | 必需。规定 MySQL 密码。 |
| dbname | 必需。规定要改变的新数据库。 |
技术细节
| 返回值: | 若成功则返回 TRUE，若失败则返回 FALSE。 |
|---|---|
| PHP 版本: | 5+ |
示例 - 程序样式
改变指定数据库连接的用户：
<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}
// Reset all and select a new database
mysqli_change_user($con, "my_user", "my_password", "test");
mysqli_close($con);
?>
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}
// Reset all and select a new database
mysqli_change_user($con, "my_user", "my_password", "test");
mysqli_close($con);
?>
