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ccfz
Asked: 2020-01-18 14:33:31 +0800 CST 2020-01-18 14:33:31 +0800 CST

Preserve variables after a page refresh

  • 772

I have made a login in which I have everything in different files to organize it better, the problem comes when a user makes a mistake in the data and then enters the last else, which will reproduce an error text on the login page after redirection to her, but it doesn't and I've tried a thousand ways. As data, I use JQUERY dialogs, in case it has something to do with it.

dialog_login.php

     <?php
    require_once('login.php');
    $error = $_POST['error'];
  ?>
      <div id="dialog1" title="Login user" style="padding-top: 0;display: none;">
      <form method="POST" action="login.php">
        <fieldset class="display_block">
          <label for="usuario_login">User</label>
          <input type="text" name="usuario_login" id="usuario_login" placeholder="smith" autofocus required class="text ui-widget-content ui-corner-all">
          <label for="password_login">Password</label>
          <input type="password" name="password_login" id="password_login
          " placeholder="1234567" required class="text ui-widget-content ui-corner-all">
          <input type="submit" value="Login" tabindex="-1">
          <p align="center" style="color: red;" ><?php echo isset($error) ? utf8_decode($error) : '' ; ?></p>
        </fieldset>
      </form>
    </div>

login.php

<?php
require_once('conexion.php');

session_start();

if(!empty($_POST))
{
    $usuario = mysqli_real_escape_string($mysqli,$_POST['usuario_login']);
    $password = mysqli_real_escape_string($mysqli,$_POST['password_login']);
    $error = '';

    $sha1_pass = sha1($password);

    $sql = "SELECT id, id_tipo FROM usuarios WHERE usuario = '$usuario' AND password = '$sha1_pass'";
    $result=$mysqli->query($sql);
    $rows = $result->num_rows;

    if($rows > 0) {
        $row = $result->fetch_assoc();
        $_SESSION['id_usuario'] = $row['id'];
        $_SESSION['tipo_usuario'] = $row['id_tipo'];
        header("location: index.php");
        } else {
            $error = "User or password incorrect";
            header("location: index.php");
    }
}

PS: The index.php thing is because I have the web structured like this with requires importing all the parts of the web in it.

php

1 Answers

  1. Best Answer

    You can save the success of being logged in to a variable $_SESSIONand then on the page index.phpcheck if you are logged in or not:

    Simplified example:

    login.php

    <?php
session_start();

// resto de código

if($rows > 0) {

  // resto de código

  $_SESSION['login'] = 1;
  header("location: index.php");

} else {

  $_SESSION['login'] = 0;
  header("location: index.php");
}

    index.php

    <?php
session_start();

if ($_SESSION['login'] === 0) {

   $error = "User or password incorrect";
}

// resto de código
    • 1