When I submit the form of register new user or new client, this message error appears.
I'm using PHP 7.1.5 with IIS Server in a Windows 10 OS. The same code was working correctly and stop work from nothing.
Somebody can help me?
Here is the code:
enter code here
<?php
if (!isset($_SESSION)) {
session_start();
}
// Verifica se não há a variável da sessão que identifica o usuário
if (!isset($_SESSION['UsuarioID'])) {
// Destrói a sessão por segurança
session_destroy();
// Redireciona o visitante de volta pro login
header("Location: login.php"); exit;
}
if(isset($_POST['submit'])) {
$nome = $_POST['txt_nome'];
$email = $_POST['txt_email'];
$password = $_POST['txt_password'];
$cpassword = $_POST['txt_cpassword'];
$nivel = $_POST['txt_nivel'];
$pass=strcmp($password,$cpassword);
if($pass == 0){
$senha = md5($password);
}else{
echo 'As Senhas Não Conferem. Verifique!';
}
if ($nivel == '1 - Diretoria') {
$nivel = 1;
}else if ($nivel == '2 - Gerência'){
$nivel = 2;
}else if ($nivel == '3 - Usuários'){
$nivel = 3;
}
$cad_usur = "INSERT INTO C_USUR
(C_USUR_USUR,C_USUR_STUS,C_USUR_NOME,C_USUR_LGIN,C_USUR_PSWD,C_USUR_NIVL)
VALUES ((SELECT S_CONT_CONT FROM
SP_PROX_NRMO('0001','C_USUR')),'1','$nome','$email','$senha','$nivel')";
$insert_usur = ibase_query($cad_usur);
if($cad_usur == true){
echo 'Cadastro Realizado Com Sucesso';
}else{
echo 'Não foi possível cadastrar o usuário. Verifique!';
}
}
?>
the problem is when it does return the binary file, pls help me
<!DOCTYPE html>
<html>
<head>
<title>Tienda Online</title>
<FORM action="upload_imagen.php" enctype="multipart/form-data" method="POST">
<input type="file" name="imagen"> Buscar imagen
<input type="submit" value="Buscar">
</FORM>
<div id="visualizar">
</div>
<form action="mostrar_imagen.php" method="POST">
<input type="text" name="valor" >
<input type="submit" value="mostrar">
</form>
</html>
upload_imagen.php this file upload an image and does storage in a DB
<?php
// Conexion a la base de datos
require "db_model.php";
class upload extends db_model {
function whatever() {
// Comprobamos si ha ocurrido un error.
if (!isset($_FILES["imagen"]) || $_FILES["imagen"]["error"] > 0) {
echo "Ha ocurrido un error.";
} else {
var_dump($_FILES["imagen"]);
// Verificamos si el tipo de archivo es un tipo de imagen permitido.
// y que el tamaño del archivo no exceda los 16MB
$permitidos = array("image/jpg", "image/jpeg", "image/gif", "image/png");
$limite_kb = 16384;
if (in_array($_FILES['imagen']['type'], $permitidos) && $_FILES['imagen']['size'] <= $limite_kb * 1024) {
// Archivo temporal
$imagen_temporal = $_FILES['imagen']['tmp_name'];
// Tipo de archivo
$tipo = $_FILES['imagen']['type'];
// Leemos el contenido del archivo temporal en binario.
$fp = fopen($imagen_temporal, 'r+b');
$data = fread($fp, filesize($imagen_temporal));
fclose($fp);
//Podríamos utilizar también la siguiente instrucción en lugar de las 3 anteriores.
// $data=file_get_contents($imagen_temporal);
// Escapamos los caracteres para que se puedan almacenar en la base de datos correctamente.
$data = mysql_real_escape_string($data);
// Insertamos en la base de datos.
$this->query ="INSERT INTO imagenes (imagen, tipo_imagen) VALUES ('$data', '$tipo')";
$resultado = $this->execute_query();
if ($resultado) {
echo "El archivo ha sido copiado exitosamente.";
} else {
echo "Ocurrió algun error al copiar el archivo.";
}
} else {
echo "Formato de archivo no permitido o excede el tamaño límite de $limite_kb Kbytes.";
}
}
}
}
$obj = new upload();
$obj->whatever();
?>
mostrar_imagen.php this section retrives the image in binary format, then i want to show it, so i read that i need a header and send it the type of image it is for example .jpg, .gif but i dont know if a i have an error
<?php
require 'db_model.php';
class mostrar extends db_model {
function __construct()
{
$id = $_POST['valor'];
$this->query = "SELECT imagen, tipo_imagen
FROM imagenes
WHERE imagen_id=$id";
$datos = $this->execute_query_as();
$imagen = $datos['imagen']; // Datos binarios de la imagen.
$tipo = $datos['tipo_imagen']; // Mime Type de la imagen.
// Mandamos las cabeceras al navegador indicando el tipo de datos que vamos a enviar.
---- > my problem is here, i guess
header("Content-type: image/jpg");
echo $imagen;
// A continuación enviamos el contenido binario de la imagen.
}
}
$obj = new mostrar();
?>
db_model.php
<?php
/**
* clase de la base de datos
*/
include_once('config.php');
class db_model
{
private $db_host = "localhost";
private $db_user = "root";
private $db_pass = "";
protected $db_name = "tienda_cartas";
protected $query;
protected $rows = array();
private $conection;
private function open_conection()
{
$this->conection = new mysqli($this->db_host,$this->db_user,$this->db_pass,$this->db_name);
if ($this->conection->connect_errno) {
echo "error al conectar";
die();
} else {
echo "conectado";
}
}
private function close_conection() {
$this->conection->close();
}
protected function execute_query() {
$this->open_conection();
$result = $this->conection->query($this->query);
if(!$result){
echo "no se pudo ejecutar el sql";
}
$this->close_conection();
return $result;
header("location:index.php");
}
protected function execute_query_as() {
$this->open_conection();
$result = $this->conection->query($this->query);
if(!$result){
echo "no se pudo ejecutar el sql";
}
$array_as = $result->fetch_assoc();
if(!$array_as){
echo "no hay incidencias";
die();
}
$this->close_conection();
return $array_as;
}
}
?>
This could be your problem:
$data = mysql_real_escape_string($data);
In your classes you use mysqli_* functions, but this one belongs to the deprecated mysql_* functions. When you call it it will automatically try to open a new database connection with mysql_connect(), which will fail because it doesn't have any information about your host. mysql_real_escape_string() will then return false:
Warning: mysql_real_escape_string(): A link to the server could not be established in test.php on line 2
bool(false)
Just remove the line, escaping binary data will most probably ruin it anyway. Instead you should use prepared statements to prevent SQL injections.
Hello! I'm having some trouble making a login for normal users, I have to tables, one is for admin users and the other for employees. The thing is that I want to use the same login and in the PHP first check if the username exists in the table admintable and if not check if it exits in empTable.
Here is my code:
It is working and recognizing only admin users but then when I try to log in with employee users it doesn't log in.
THANKS!!
<?php
include 'cod/php/utils.php';
if(isset($_POST['txtuser']) )
{
//get data from POST
$txtuser = $_POST['txtuser'];
$txtpass = $_POST['txtpass'];
//verificar que exista el usuario en la tabla de admins
if(exists('admintable', 'Username', $txtuser))
{
//obtener el password del usuario
if(get_value('admintable', 'Password', 'Username', $txtuser) == $txtpass)
{
//iniciar sesion
session_start();
//almacenar el usuario en esta sesion
$_SESSION['usuario'] = $txtuser;
header('Location: web/admin.php');
}
}
//verificar que exista el usuario en la tabla de admins
else if(exists('empTable', 'empUsername', $txtuser))
{
//obtener el password del usuario
if(get_value('empTable', 'empPassword', 'empUsername', $txtuser) == $txtpass)
{
//iniciar sesion
session_start();
//almacenar el usuario en esta sesion
$_SESSION['usuario'] = $txtuser;
header('Location: web/usr.php');
}
}
else
{
print_login(true);
}
}
else
{
print_login(true);
}
else
{
print_login(false);
}
}
function print_login($showerror)
{}
?>
I used this code to connect my contact form to mysql but the problem is I don't know how to validate each item like the name has to be fill or the email should be valid so it will not bother me later when I take care all of it, here is my code :can you help me :
<?php
$con=mysqli_connect("example.com","peter","abc123","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="INSERT INTO Persons (FirstName, LastName, Age)
VALUES
('$_POST[firstname]','$_POST[lastname]','$_POST[age]')";
if (!mysqli_query($con,$sql))
{
die('Error: ' . mysqli_error($con));
}
echo "1 record added";
mysqli_close($con);
?>
You should have client side validation (e.g using jquery)
and in your php you can try like this:
if(!empty($_POST['lastname']) && !empty($_POST['age']) && !empty($_POST['firstname']) && filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) {
$con=mysqli_connect("example.com","peter","abc123","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="INSERT INTO Persons (FirstName, LastName, Age)
VALUES
('mysqli_real_escape_string($con,$_POST[firstname])','mysqli_real_escape_string($con,$_POST[lastname])','mysqli_real_escape_string($con,$_POST[age])')";
if (!mysqli_query($con,$sql))
{
die('Error: ' . mysqli_error($con));
}
echo "1 record added";
mysqli_close($con);
}
You can validate email in php like this:
filter_var($emailAddress, FILTER_VALIDATE_EMAIL)
php filter
For proper validation of a form, some aspects have to be taken into account, to help filter an excess of garbage input. My approach is this:
First of all, check the minimum lenght of the text. This way, you decrease the risk of getting meaningless input. Secondly, check the maximum lenght of the text; you don't want someone flooding your database with a ton of text just for fun. And thirdly, you should use regular expressions to check proper formats for the different fields (a postal code, a phone number, an e-mail) and very important, allow only characters that are required in that field, to avoid or minimize the risk of someone sending miserable cross-site injections thru the input.
Here an orientative example:
function validate_form() {
$errors = array();
// El nombre del usuario es necesario
if (! strlen(trim($_POST['user_name']))) {
$errors[] = 'The username is required.';
}
// El nombre del usuario no debe contener caracteres problemáticos
if (preg_match('#[^a-zA-Z0-9_\- ]#', trim($_POST['user_name']))) {
$errors[] = 'The username cannot contain invalid characters.';
}
// El nombre del usuario no debe tener menos de 3 caracteres
if (strlen(trim($_POST['user_name'])) < 3) {
$errors[] = 'The username cannot have less than 3 characters long.';
}
// El nombre del usuario no debe tener más de 24 caracteres
if (strlen(trim($_POST['user_name'])) > 24) {
$errors[] = 'The username cannot have more than 24 characters long.';
}
// La contraseña es necesaria
if (! strlen(trim($_POST['password']))) {
$errors[] = 'The password is required.';
}
// La contraseña no debe contener caracteres problemáticos
if (preg_match('#[^a-zA-Z0-9_\-]#', trim($_POST['password']))) {
$errors[] = 'The password cannot contain invalid characters.';
}
// La contraseña no debe tener menos de 6 caracteres
if (strlen(trim($_POST['password'])) < 6) {
$errors[] = 'The password cannot have less than 6 characters long.';
}
// La contraseña no debe tener más de 12 caracteres
if (strlen(trim($_POST['password'])) > 12) {
$errors[] = 'The password cannot have more than 12 characters long.';
}
// La contraseña debe contener letras y números
if (! preg_match('/([a-zA-Z][0-9]|[0-9][a-zA-Z])+/', trim($_POST['password']))) {
$errors[] = 'The password must contain letters and numbers.';
}
// Password y Password Check deben ser iguales
if ($_POST['password'] != $_POST['password_check']) {
$errors[] = 'Password and Password Check do not match.';
}
// El correo electrónico es necesario
if (! strlen(trim($_POST['e_mail']))) {
$errors[] = 'The e-mail is required.';
}
// El correo electrónico no debe contener caracteres problemáticos
if (preg_match('/[^a-zA-Z0-9_\-#\.]/', trim($_POST['e_mail']))) {
$errors[] = 'The e-mail cannot contain invalid characters.';
}
// El correo electrónico no debe tener más de 64 caracteres
if (strlen(trim($_POST['e_mail'])) > 64) {
$errors[] = 'The e-mail cannot have more than 64 characters long.';
}
// El correo electrónico debe tener un formato correcto
if (! preg_match('/[^#\s]{3,}#([-a-z0-9]{3,}\.)+[a-z]{2,}/', trim($_POST['e_mail']))) {
$errors[] = 'The e-mail must have a valid format.';
}
// El país seleccionado debe ser válido
if (! array_key_exists($_POST['country'], $GLOBALS['countries'])) {
$errors[] = 'Please select a valid country.';
}
// La ciudad es necesaria
if (! strlen(trim($_POST['city']))) {
$errors[] = 'The city is required.';
}
// La ciudad no debe contener caracteres problemáticos
if (preg_match('#[^a-zA-Z\- ]#', trim($_POST['city']))) {
$errors[] = 'The city cannot contain invalid characters.';
}
// La ciudad no debe tener menos de 3 caracteres
if (strlen(trim($_POST['city'])) < 3) {
$errors[] = 'The city cannot have less than 3 characters long.';
}
// La ciudad no debe tener más de 64 caracteres
if (strlen(trim($_POST['city'])) > 64) {
$errors[] = 'The city cannot have more than 64 characters long.';
}
// El mes seleccionado debe ser válido
if (! array_key_exists($_POST['month'], $GLOBALS['months'])) {
$errors[] = 'Please select a valid month.';
}
// El día seleccionado debe ser válido
if (! array_key_exists($_POST['day'], $GLOBALS['days'])) {
$errors[] = 'Please select a valid day.';
}
// El año seleccionado debe ser válido
if (! array_key_exists($_POST['year'], $GLOBALS['years'])) {
$errors[] = 'Please select a valid year.';
}
// El nombre real del usuario es necesario
if (! strlen(trim($_POST['real_name']))) {
$errors[] = 'Your real name is required.';
}
// El nombre real del usuario no debe contener caracteres problemáticos
if (preg_match('#[^a-zA-Z\- ]#', trim($_POST['real_name']))) {
$errors[] = 'Your real name cannot contain invalid characters.';
}
// El nombre real del usuario debe tener menos de 3 caracteres
if (strlen(trim($_POST['real_name'])) < 3) {
$errors[] = 'Your real name cannot have less than 3 characters long.';
}
// El nombre real del usuario no debe tener más de 64 caracteres
if (strlen(trim($_POST['real_name'])) > 64) {
$errors[] = 'Your real name cannot have more than 64 characters long.';
}
// El número CAPTCHA introducido debe ser correcto
$captcha_num_1 = substr($_POST['captcha'], 0, 1);
$captcha_num_2 = substr($_POST['captcha'], 1, 1);
$captcha_num_3 = substr($_POST['captcha'], 2, 1);
$captcha_num_4 = substr($_POST['captcha'], 3, 1);
$captcha_num_5 = substr($_POST['captcha'], 4, 1);
if (($_SESSION['num1'] != crypt($captcha_num_1, $_SESSION['num1'])) ||
($_SESSION['num2'] != crypt($captcha_num_2, $_SESSION['num2'])) ||
($_SESSION['num3'] != crypt($captcha_num_3, $_SESSION['num3'])) ||
($_SESSION['num4'] != crypt($captcha_num_4, $_SESSION['num4'])) || ($_SESSION['num5'] != crypt($captcha_num_5, $_SESSION['num5']))) {
$errors[] = 'The CAPTCHA number entered is not correct.';
}
// El nombre de usuario y la dirección de e-mail deben ser únicos en la base de datos
global $db;
$sql = 'SELECT user_name, e_mail FROM users';
$q = mysqli_query($db, $sql);
if (mysqli_num_rows($q) > 0) {
while ($users = mysqli_fetch_object($q)) {
if ($users->user_name == $_POST['user_name']) {
$errors[] = 'This username already exists in the database. Please use a different one.';
}
if ($users->e_mail == $_POST['e_mail']) {
$errors[] = 'This e-mail address already exists in the database. Please use a different one.';
}
}
}
// Si hay errores, resetear el CAPTCHA
if (is_array($errors)) { reset_captcha();
}
return $errors;
}
Please find the following answer
<?php
$con=mysqli_connect("example.com","peter","abc123","my_db");
//Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$c=0;
if($_POST['firstname']=="")
{
$msg='Please enter firstname';
$c++;
}
if($_POST['lastname']=="")
{
$msg1='Please enter lastname';
$c++;
}
if($_POST['age']=="")
{
$msg2='Please enter age';
$c++;
}
if($c==0)
{
$sql="INSERT INTO Persons (FirstName, LastName, Age)
VALUES
('$_POST[firstname]','$_POST[lastname]','$_POST[age]')";
if (!mysqli_query($con,$sql))
{
die('Error: ' . mysqli_error($con));
}
echo "1 record added";
}
mysqli_close($con);
?>
Print $msg,$msg1,$msg2 in respective places
I'm building an admin panel in PHP. I'm new to PHP and I can't get my edit page to work as I need it to. I can edit the name, but 2 values which represent "Active User" and "Access Level" are set to 0 and I can't change it from 0 on my edit page, only from PhpmyAdmin..
<?php
// Inserir o registo na BD
include_once ('config1.php');
// Estabelecer a ligação à BD
$connection = new mysqli('localhost', 'root', '123456', 'admin1');
//Verificar se a ligação foi estabelecida com sucesso
if (mysqli_connect_errno() ) {
echo "</h2>Erro no acesso a BD</h2>" . mysqli_connect_error();
exit();
}
// Validar se os campos do formulário foram preenchidos pelo utilizador
// Verificar se "username" foi enviado
if (isset($_POST['iusername']) == FALSE) {
echo ("Erro de submissão");
exit();
} else {
$username = trim($_POST['iusername']);
}
if (isset($_POST['inome']) == FALSE) {
echo ("Erro de submissão");
exit();
} else {
$nome = trim($_POST['inome']);
}
if (isset($_POST['inivel']) == FALSE) {
echo ("Erro de submissão");
exit();
} else {
$apelido = trim($_POST['inivel']);
}
if (isset($_POST['iativo']) == FALSE) {
echo ("Erro de submissão");
exit();
} else {
$telefone = trim($_POST['iativo']);
}
if (isset($_POST['iemail']) == FALSE) {
echo ("Erro de submissão");
exit();
} else {
$email = trim($_POST['iemail']);
}
if (isset($_POST['ipass']) == FALSE) {
echo ("Erro de submissão");
exit();
} else {
$pass = trim($_POST['ipass']);
}
if (isset($_POST['irpass']) == FALSE) {
echo ("Erro de submissão");
exit();
} else {
$repass = trim($_POST['irpass']);
}
// Função de validação do email (chamada mais abaixo no código)
function isValidEmail($email){
return #eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*#[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z] {2,3})", $email);
// Validar se o nº de caracteres do "username" está entre 4 e 12
if (strlen($username) < 4 || strlen($username) > 12) {
$erro = true;
$msgerro .= "<p>erro: \"username\" deve conter entre 4 e 12 caracteres</p>";
}
// Validar se o nome tem entre 3 e 40 caracteres
if (strlen($nome) < 3 || strlen($nome) > 40) {
//echo (strlen($nome));
$erro = true;
$msgerro .= "<p>erro: \"nome\" deve conter entre 3 a 40 caracteres</p>";
}
// Validação das passwords
$mudapass = false;
if (strlen($password) == 0 && strlen($rpassword) == 0) {
$mudapass = false;
} else {
$mudapass = true;
}
// 2.2. Validar o tamanho da password
if (strlen($password) < 4 || strlen($password)> 16) {
$erro = true;
$msgerro .= "<p>erro: \"password\" deve conter entre 4 a 16 caracteres</p>";
}
}
// 3. Validar se as duas passwords correspondem
if ($password != $rpassword) {
$erro = true;
$msgerro .= "<p>\"passwords\" não correspondem</p>";
}
// validação de email
// Chama a nova função "isValidEmail"
if (isValidEmail($email) == false) {
$erro = true;
$msgerro .= "<p>email inválido</p>";
}
// Final das validações (avisa caso algum erro seja detectado)
if ($erro) {
echo "<p>Formulário submetido com erros</p>";
echo $msgerro;
echo "<br>";
// Desenha 2 botões "Corrigir" e "Listar"
echo "<a class='ains' href='javascript:history.go(-1)' title='Volta à página anterior'>Corrigir </a>";
echo "<br/>";
echo "<a class='ains' href='lista.php'>Listar</a>";
exit();
}
if($password != $rpassword){
echo "ERRO: PASSWORDS SAO DIFERENTES";
}
$sql= "UPDATE usuarios SET
nome = '$nome';
email = '$email';
nivel = '$nivel';
ativo = '$ativo';
WHERE
usuario = '$username'";
if ($mudapass == TRUE) {
$sql = "UPDATE usuarios SET nome = '$nome',
password = '$password',
email = '$email',
nivel = '$nivel',
ativo = '$ativo', WHERE usuario = '$username'";
}
if ($mudapass == FALSE) {
$sql = "UPDATE usuarios SET
nome = '$nome',
email = '$email',
nivel = '$nivel',
ativo = '$ativo'
WHERE
usuario = '$username'";
}
$connection->query($sql);
// Lista users depois de actualizar
header("location:lista.php");
?>
It looks like a naming problem. Two of your variables don't seem to follow the same convention as the rest of them, and unless I'm missing some extra processing before the query, then you should change these two lines:
$apelido = trim($_POST['inivel']);
// ...several lines later
$telefone = trim($_POST['iativo']);
to this:
$nivel = trim($_POST['inivel']);
// ...several lines later
$ativo = trim($_POST['iativo']);