我正在尝试使用api调用更新数据库行,但是由于某种原因,它会出现此错误:
未捕获的错误:在字符串上调用成员函数fetch()
我不确定字符串上的函数含义是什么,因为我将其应用于mysqli_stmt对象。
这是放置文件的外观:
if (isset($authlvl)) {
if (ctype_space($authlvl) == false && $authlvl >= 3) {
if (isset($id) && ctype_space($id) == false) {
if (isset($id) && ctype_space($id) == false && $id !== null) {
$rule = $id;
$request = 'id';
} else if (isset($username) && ctype_space($username) == false && $username !== null) {
$rule = $username;
$request = 'username';
} else if (isset($email) && ctype_space($email) == false && $email !== null) {
$rule = $email;
$request = 'email';
} else if (isset($password) && ctype_space($password) == false && $password !== null) {
$rule = $password;
$request = 'password';
} else if (isset($image) && ctype_space($image) == false && $image !== null) {
$rule = $image;
$request = 'image';
} else {
$request = "1";
$rule = "2";
}
$post = new Post($db);
$result = $post->post($request, $rule);
$result->bind_result($previd, $prevusername, $prevemail, $prevpassword, $previmage, $prevauthlvl);
$result->store_result();
$num = $result->num_rows();
if ($num > 0) {
while ($result->fetch()) {
$put = new Put($db);
$result = $put->update(
isset($username) ? preg_replace('/\s+/', '', $username) : null,
isset($email) ? preg_replace('/\s+/', '', $email) : null,
isset($password) ? preg_replace('/\s+/', '', $password) : null,
isset($image) ? preg_replace('/\s+/', '', $image) : null,
isset($authlvl) ? preg_replace('/\s+/', '', $authlvl) : null,
$previd,
$prevusername,
$prevemail,
$prevpassword,
$previmage,
$prevauthlvl
);
echo $result;
}
} else {
echo "Couldn't update row. Reason: 404 Not Found";
}
} else {
echo "A valid id is required!";
}
} else {
echo "You are not authorized to peform this request!";
}
} else {
echo "You are not authorized to peform this request!";
}
$ username,$ email ect ...是由一个巨大的if语句混乱计算的,我现在将不包括它,因为它正在使用很多行,但这只是其中的一小部分:< / p>
$content = file_get_contents('php://input');
if (strpos($content, "email") !== false) {
$email = substr($content, (strpos($content, "email")) + 10, ((strpos($content, "-", strpos($content, "email"))) - strpos($content, "email")) - 12);
}
这是发布文件,它执行发布请求:
class Post
{
private $conn;
public $id;
public $username;
public $email;
public $password;
public $image;
public $authlvl;
public function __construct($db)
{
$this->conn = $db;
}
public function post($request, $rule)
{
$format = "s";
if ($request == "id") {
$query = "SELECT * FROM users WHERE id=?";
$format = "i";
} else if ($request == "username") {
$query = "SELECT * FROM users WHERE username=?";
} else if ($request == "email") {
$query = "SELECT * FROM users WHERE email=?";
} else if ($request == "password") {
$query = "SELECT * FROM users WHERE password=?";
} else if ($request == "image") {
$query = "SELECT * FROM users WHERE image=?";
} else {
$query = "SELECT * FROM users";
}
if ($stmt = $this->conn->prepare($query)) {
$stmt->bind_param("" . $format . "", $rule);
$stmt->execute();
return $stmt;
} else {
echo "invalid string";
}
}
}
我正在用邮递员测试api。
我已经尝试过的:
如果有人有解决方案,请告诉我:)
答案 0 :(得分:0)
const Root = () => {
return (
<BrowserRouter>
<App/>
</BrowserRouter>
);
};
export default Root;
您正在循环中重新分配 frame = UIImage(cgImage: images[Int(index)], scale: UIScreen.main.scale, orientation: .up)
。
因此它执行一次,然后产生以上错误消息。