PHP mysqli_set_charset() 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();
}

// Change character set to utf8
mysqli_set_charset($con,"utf8");

mysqli_close($con);
?>