PHP mysqli_change_user() 函数

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

// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

// Reset all and select a new database
mysqli_change_user($link, "my_user", "my_password", "my_test");

mysqli_close($con);
?>