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[*] Improve database query security with prepared statements #62

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[*] Improve database query security with prepared statements #62

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b0344db
[*] Improve database query security with prepared statements
samhsu-dev Mar 6, 2025
d4c033e
Refactor add() function with prepared statement for improved security
samhsu-dev Mar 6, 2025
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30 changes: 19 additions & 11 deletions function.php
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Original file line number Diff line number Diff line change
Expand Up @@ -124,10 +124,12 @@ function importSQLFile($connection) {
}

function delete_bd_user() {
$id=$_POST['id'];
$id = $_POST['id'];
$connectDatabase = connectDatabase();
$sql = "DELETE FROM bd_user WHERE `bd_user`.`id` = $id";
$result = $connectDatabase->query($sql);
$sql = "DELETE FROM bd_user WHERE `bd_user`.`id` = ?";
$stmt = $connectDatabase->prepare($sql);
$stmt->bind_param("i", $id);
$result = $stmt->execute();

if ($result === true) {
$response["success"] = true;
Expand Down Expand Up @@ -290,12 +292,14 @@ function revise_info(){
return json_encode($response);
}
function switch_bd_user(){
$id=$_POST['id'];
$switch=$_POST['switch'];
$id = $_POST['id'];
$switch = $_POST['switch'];
$switch = ($switch === '-1') ? '0' : (($switch === '0') ? '-1' : $switch);
$sql="UPDATE `bd_user` SET `switch` = '$switch' WHERE `bd_user`.`id` = $id;";
$connectDatabase = connectDatabase();
$result = $connectDatabase->query($sql);
$sql = "UPDATE `bd_user` SET `switch` = ? WHERE `bd_user`.`id` = ?";
$stmt = $connectDatabase->prepare($sql);
$stmt->bind_param("si", $switch, $id);
$result = $stmt->execute();
if ($result === true) {
$response["success"] = true;
$response["message"] ="更改状态成功";
Expand All @@ -310,11 +314,15 @@ function switch_bd_user(){

function add() {
$cookie = $_POST['cookie'];
$name = $_POST['name'];
$name = $_POST['name'];
$vip_type = $_POST['vip_type'];
$currentDateTime = date('Y-m-d H:i:s');
$sql = "INSERT INTO `bd_user` (`id`, `name`, `cookie`, `add_time`, `use`, `state`, `switch`, `vip_type`)
VALUES (NULL, '$name', '$cookie', '$currentDateTime', '$currentDateTime', '-2', '0', '$vip_type');";
$currentDateTime = date('Y-m-d H:i:s');

$connectDatabase = connectDatabase();
$stmt = $connectDatabase->prepare("INSERT INTO `bd_user` (`id`, `name`, `cookie`, `add_time`, `use`, `state`, `switch`, `vip_type`)
VALUES (NULL, ?, ?, ?, ?, '-2', '0', ?)");
$stmt->bind_param("sssss", $name, $cookie, $currentDateTime, $currentDateTime, $vip_type);
$sql = $stmt;

$connectDatabase = connectDatabase();
$result = $connectDatabase->query($sql);
Expand Down