警告：mysqli_real_escape_string（）只需要2个参数，1 在第49行的C：\ xampp \ htdocs \ swift \ core \ functions \ general.php中给出
注意：未定义的变量：conn in 第85行的C：\ xampp \ htdocs \ swift \ core \ functions \ users.php
警告：mysqli_query（）期望参数1为mysqli，null给定 第85行的C：\ xampp \ htdocs \ swift \ core \ functions \ users.php
致命错误：未捕获错误：调用未定义的函数 mysqli_result（）在C：\ xampp \ htdocs \ swift \ core \ functions \ users.php：86 堆栈跟踪：＃0 C：\ xampp \ htdocs \ swift \ loginact.php（14）：f_exists（''） 在第86行的C：\ xampp \ htdocs \ swift \ core \ functions \ users.php中抛出＃1 {main}
我继续得到这些错误，但我找不到办法，我已经尝试了一切..希望有人可以帮助我，因为我是新手。 我一直这样做已经差不多一天了，我无法找到答案。
这是General.php。
<?php
$connect_error = 'Sorry, there was some connectivity issue!';
$conn = mysqli_connect('localhost','root','');
$db = mysqli_select_db($conn, 'swift');
function activation($to, $subject, $body) {
mail($to, $subject, $body, 'From: swift@srikanthnatarajan.com');
}
function recovery_user_pass($to, $subject, $body) {
mail($to, $subject, $body, 'From: swift@srikanthnatarajan.com');
}
function f_protect_page() {
if(f_logged_in() === false) {
header('Location: flogin.php');
exit();
}
}
function user_protect_page() {
if(f_logged_in() === false) {
header('Location: fprotect.php');
exit();
}
}
function use_protect_page() {
if(f_logged_in() === true) {
header('Location: fprotect.php');
exit();
}
}
function f_logged_in_redirect() {
if(f_logged_in() === true) {
header('Location: index.php');
exit();
}
}
function array_sanitize($item) {
$item = htmlentities(strip_tags(mysqli_real_escape_string($item)));
}
function sanitize($data) {
return htmlentities(strip_tags(mysqli_real_escape_string($data)));
}
function output_errors($errors) {
return '<ul><li>' . implode('</li><li>', $errors) . '</li></ul>';
}
?>
这是USERS.PHP可以有人请检查一下。
<?php
$connect_error = 'Sorry, there was some connectivity issue!';
$conn = mysqli_connect('localhost','root','');
$db = mysqli_select_db($conn, 'swift');
function f_recover($mode, $f_mailid) {
$mode = sanitize($mode);
$f_mailid = sanitize($f_mailid);
$f_data = f_data(f_id_from_email($f_mailid),'f_id','f_fname','f_uname');
if ($mode == 'f_uname') {
recovery_user_pass($f_mailid, 'Recovery: Your username', "Hello " . $f_data['f_fname'] . ",\n\nYour username is: " . $f_data['f_uname'] . "\n\n-Swift Airlines");
}
else if($mode == 'f_password') {
$generated_password = substr(md5(rand(999, 999999)), 0, 8);
f_change_password($f_data['f_id'], $generated_password);
update_f($f_data['f_id'], array('f_passrec' => '1'));
recovery_user_pass($f_mailid, 'Recovery: Your password', "Hello " . $f_data['f_fname'] . ",\n\nYour new password is: " . $generated_password . "\n\n-TOFSIS");
}
}
function f_activate($f_mailid, $f_mailcode) {
$f_mailid = mysqli_real_escape_string($_POST['f_mailid']);
$f_mailcode = mysqli_real_escape_string($_POST['f_mailcode']);
if(mysqli_result(mysqli_query("SELECT COUNT(`f_id`) FROM `flight_users` WHERE `f_mailid` = '$f_mailid' AND `f_mailcode` = '$f_mailcode' AND `f_active` = 0"), 0) == 1) {
mysqli_query("UPDATE `flight_users` SET `f_active` = 1 WHERE `f_mailid` = '$f_mailid' ");
return true;
}
else {
return false;
}
}
function update_f($f_id, $update_data) {
$update = array();
array_walk($update_data, 'array_sanitize');
foreach ($update_data as $field => $data) {
$update[] = '`' . $field . '` = \'' . $data . '\'';
}
mysqli_query("UPDATE `flight_users` SET " . implode(', ',$update) . "WHERE `f_id` = $f_id") or die(mysqli_error($conn));
}
function f_change_password($f_id, $f_password) {
$f_id = (int)$f_id;
$f_password = md5($f_password);
mysqli_query("UPDATE `flight_users` SET `f_password` = '$f_password', `f_passrec` = 0 WHERE `f_id` = $f_id");
}
function register_f($register_data) {
array_walk($register_data, 'array_sanitize');
$register_data['f_fname'] = ucwords(strtolower($register_data['f_fname']));
$register_data['f_lname'] = ucwords(strtolower($register_data['f_lname']));
$register_data['f_password'] = md5($register_data['f_password']);
$register_data['f_uname'] = strtolower($register_data['f_uname']);
$fields = '`' . implode('`, `', array_keys($register_data)) . '`';
$data = '\'' . implode('\', \'', $register_data) . '\'';
mysqli_query("INSERT INTO `flight_users` ($fields, `f_regdate`) VALUES ($data, NOW())");
activation($register_data['f_mailid'], 'Swift Airlines: Activate your account', "Hello " . $register_data['f_fname'] . ", \n\nYou need to activate your account in order to use the features of Swift Airlines. Please click the link below: \n\nhttp://srikanthnatarajan.com/swift/activate.php?f_mailid=" . $register_data['f_mailid'] . "&f_mailcode=" . $register_data['f_mailcode'] . " \n\n-Swift Airlines");
}
function f_data($f_id){
$data = array();
$f_id = (int)$f_id;
$func_num_args = func_num_args();
$func_get_args = func_get_args();
if($func_num_args > 1) {
unset($func_get_args[0]);
$fields = '`'. implode('`, `', $func_get_args) . '`';
$data = mysqli_fetch_assoc(mysqli_query("SELECT $fields FROM `flight_users` WHERE `f_id` = $f_id"));
return $data;
}
}
function f_logged_in() {
return (isset($_SESSION['f_id'])) ? true : false;
}
function f_exists($f_uname) {
$f_uname = sanitize($f_uname);
$query = mysqli_query($conn, "SELECT COUNT(`f_id`) FROM `flight_users` WHERE `f_uname`= '$f_uname'");
return (mysqli_result($conn, $query, 0) == 1) ? true : false;
}
function f_email_exists($f_mailid) {
$f_mailid = sanitize($f_mailid);
$query = mysqli_query($conn, "SELECT COUNT(`f_id`) FROM `flight_users` WHERE `f_mailid`= '$f_mailid'");
return (mysqli_result($conn, $query, 0) == 1) ? true : false;
}
function f_regid_exists($f_regid) {
$f_regid = sanitize($f_regid);
$query = mysqli_query($conn, "SELECT COUNT(`f_id`) FROM `flight_users` WHERE `f_regid`= '$f_regid'");
return (mysqli_result($conn, $query, 0) == 1) ? true : false;
}
function f_active($f_uname) {
$f_uname = sanitize($f_uname);
$query = mysqli_query($conn, "SELECT COUNT(`f_id`) FROM `flight_users` WHERE `f_uname`= '$f_uname' AND `f_active` = 1");
return (mysqli_result($conn, $query, 0) == 1) ? true : false;
}
function f_id_from_username($f_uname) {
$f_uname = sanitize($f_uname);
$query = mysqli_query($conn, "SELECT `f_id` FROM `flight_users` WHERE `f_uname` = '$f_uname'");
return mysqli_result($conn, $query, 0, 'f_id');
}
function f_id_from_email($f_mailid) {
$f_mailid = sanitize($f_mailid);
$query = mysqli_query($conn, "SELECT `f_id` FROM `flight_users` WHERE `f_mailid` = '$f_mailid'");
return mysqli_result($conn, $query, 0, 'f_id');
}
function f_login($f_uname, $f_password) {
$f_id = f_id_from_username($f_uname);
$f_uname = sanitize($f_uname);
$f_password = md5($f_password);
$query = mysqli_query($conn, "SELECT COUNT(`f_id`) FROM `flight_users` WHERE `f_uname`= '$f_uname' AND `f_password` = '$f_password'");
return (mysqli_result($conn, $query, 0) == 1) ? $f_id : false;
}
?>
，这是Loginact.php ------------------
<?php
$title = 'Swift Airlines | Login Error';
include $_SERVER["DOCUMENT_ROOT"].'/swift/core/init.php';
if(empty($_POST) === false) {
$f_uname = $_POST['f_uname'];
$f_password = $_POST['f_password'];
if(empty($f_uname) === true || empty($f_password) === true){
$errors[] = 'You need to enter both, the username and the password!';
}
else if (f_exists($f_uname)===false) {
$errors[] = 'No such user exists! Please register!';
}
else if(f_active($f_uname)===false) {
$errors[] = 'Please activate your account!';
}
else {
if(strlen($f_password)>32) {
$errors[] = 'Password too long!';
}
$f_login = f_login($f_uname, $f_password);
if($f_login===false) {
$errors[] = 'Username and Password do not match!';
}
else {
$_SESSION['f_id'] = $f_login;
header('Location: http://localhost/swift/index.php');
exit();
}
}
}
else {
$errors[] = 'No Log In credentials received!';
}
include $_SERVER["DOCUMENT_ROOT"].'/swift/includes/overall/header.php';
if(empty($errors) === false) {
?>
<br/><h4>We tried to log you in, but : </h4><br/>
<?php
echo output_errors($errors);
}
include $_SERVER["DOCUMENT_ROOT"].'/swift/includes/overall/footer.php';
?>
我继续得到这些错误，但我找不到办法，我已经尝试了一切..希望有人可以帮助我，因为我是新手。 我一直这样做已经差不多一天了，我无法找到答案。
我知道php有点难，我一直在寻找答案近一天了。我只是编程的新手，我尽我所能努力学习这些东西，希望有人可以帮助我。
我希望我能在这里学到更多关于php和其他编程语言的知识..即使我现在正在问我也要继续寻找答案。但是非常感谢。
答案 0 :(得分：1)
我怀疑你尝试了一切！
看起来好像是在尝试从mysql_ functions迁移到mysqli _。
来自manual的mysqli_fetch_array：
$query = "SELECT Name, CountryCode FROM City ORDER by ID LIMIT 3"; $result = mysqli_query($link, $query); /* numeric array */ $row = mysqli_fetch_array($result, MYSQLI_NUM); printf ("%s (%s)\n", $row[0], $row[1]);
$ link是你的mysqli连接。在你的代码中它是$ conn。
在您的功能中，您有范围问题。 $ conn在全局范围内，因此未在函数范围内设置。
将其分解，从您的f_id_from_email函数开始，然后按照并尝试翻译手册的示例。
如果阅读，错误消息实际上非常有用。但是，当你面对许多人时，你可能会不堪重负。
调用未定义的函数mysqli_result（）
那是因为没有mysqli_result函数。
答案 1 :(得分：0)
1- general.php第49行：查看mysqli_real_escape_string，在程序代码中，您必须指定2个参数，链接（或连接）和字符串。
function array_sanitize($conn,$item) {
$item = htmlentities(strip_tags(mysqli_real_escape_string($conn,$item)));
}
function sanitize($conn,$data) {
return htmlentities(strip_tags(mysqli_real_escape_string($conn,$data)));
}
2- users.php，在第85行，$ conn在函数范围内不存在。将$ conn作为参数传递给函数并使用（$ conn，$ f_uname）调用它。
function f_exists($conn,$f_uname) {
$f_uname = sanitize($f_uname);
$query = mysqli_query($conn, "SELECT COUNT(`f_id`) FROM `flight_users` WHERE `f_uname`= '$f_uname'");
return (mysqli_result($conn, $query, 0) == 1) ? true : false;
}
3-第86行的问题，与我的＃2点相同。
答案 2 :(得分：-3)
注意：未定义的变量：conn ... 添加函数 global $ conn 。这是一个非常糟糕的做法
function f_exists($f_uname, $conn) {
// or global $conn;
$f_uname = sanitize($f_uname);
$query = mysqli_query($conn, "SELECT COUNT(`f_id`) FROM `flight_users` WHERE `f_uname`= '$f_uname'");
return (mysqli_result($conn, $query, 0) == 1) ? true : false;
}