What's wrong with the implementation of PHP search function?

Question

#This is a database table

Answer 1

Or you can write this in the fourth line of your Conn.php:

$db->query("SET NAMES 'utf8'");

Answer 2

Initialize a PDO object and set utf-8 encoding.

<?php

$dbh = new PDO('mysql:host=localhost;dbname=database name;charset=utf8', "root", "YOUXIA");

?>

Answer 3

Check the encoding, and don’t have Chinese characters in the path