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<?php require_once 'config.php'?>
<?php
global $conn;
function execute_sql($sql) {
global $conn;
if($conn == NULL){
// 创建连接
$conn = new mysqli(Config::$servername, Config::$username, Config::$password, Config::$db_name);
// 检测连接
if ($conn->connect_error) {
die("连接失败: " . $conn->connect_error);
return ;
}
}
return mysqli_query($conn, $sql);
}
function get_last_insert_id() {
global $conn;
return mysqli_insert_id($conn);
}
?>
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