php login

<?php
session_start();
$errorMsg = "";
$validUser = $_SESSION["login"] === true;
if(isset($_POST["sub"])) {
  $validUser = $_POST["username"] == "admin" && $_POST["password"] == "password";
  if(!$validUser) $errorMsg = "Invalid username or password.";
  else $_SESSION["login"] = true;
}
if($validUser) {
   header("Location: /login-success.php"); die();
}
?>
<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html;charset=utf-8" />
  <title>Login</title>
</head>
<body>
  <form name="input" action="" method="post">
    <label for="username">Username:</label><input type="text" value="<?= $_POST["username"] ?>" id="username" name="username" />
    <label for="password">Password:</label><input type="password" value="" id="password" name="password" />
    <div class="error"><?= $errorMsg ?></div>
    <input type="submit" value="Home" name="sub" />
  </form>
</body>
</html>

3.67
6
Doppelfish 120 points

                                    &lt;?php 
session_start();
?&gt;
&lt;!DOCTYPE html&gt;
&lt;html lang=&quot;en&quot;&gt;
&lt;head&gt;
    &lt;meta charset=&quot;UTF-8&quot;&gt;
    &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;
    &lt;title&gt;Login&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;form action=&quot;&quot; method=&quot;POST&quot;&gt;
        &lt;input type=&quot;password&quot; name=&quot;password&quot;&gt;
        &lt;button type=&quot;submit&quot; name=&quot;submit&quot;&gt;Login&lt;/button&gt;
    &lt;/form&gt;
    &lt;?php 
    if(isset($_POST['submit'])){
        if(password_verify($_POST['password'], '$2y$10$sejeRNYZGaoPh1EwfcuO1.hxl/uepQOh9SITWWgeej86vnMt26KIa')){
                        $_SESSION['login'] = true;
          header(&quot;Location: http://localhost&quot;);
        }
    }
?&gt;
&lt;/body&gt;
&lt;/html&gt;

3.67 (6 Votes)
0
4
1

                                    /* na primeira linha usaremos o &ldquo;action=ope.php&rdquo; para que o formul&aacute;rio repasse 
as informa&ccedil;&otilde;es para a p&aacute;gina ope.php */
&lt;form method=&quot;post&quot; action=&quot;ope.php&quot; id=&quot;formlogin&quot; name=&quot;formlogin&quot; &gt;
&lt;fieldset id=&quot;fie&quot;&gt;
&lt;legend&gt;LOGIN&lt;/legend&gt;&lt;br /&gt;
&lt;label&gt;NOME : &lt;/label&gt;
// o campo &ldquo;name&rdquo; dentro do input e importante, 
// pois ser&aacute; ele que armazenar&aacute; os dados digitados . 
&lt;input type=&quot;text&quot; name=&quot;login&quot; id=&quot;login&quot;&nbsp; /&gt;&lt;br /&gt;
&lt;label&gt;SENHA :&lt;/label&gt;
&lt;input type=&quot;password&quot; name=&quot;senha&quot; id=&quot;senha&quot; /&gt;&lt;br /&gt;
&lt;input type=&quot;submit&quot; value=&quot;LOGAR&nbsp; &quot;&nbsp; /&gt;
&lt;/fieldset&gt;
&lt;/form&gt;

4 (1 Votes)
0
3
1
MrTwister 100 points

                                    &lt;?php
session_start();// come sempre prima cosa, aprire la sessione 
include(&quot;db_con.php&quot;); // Include il file di connessione al database
$_SESSION[&quot;username&quot;]=$_POST[&quot;username&quot;]; // con questo associo il parametro username che mi &egrave; stato passato dal form alla variabile SESSION username
$_SESSION[&quot;password&quot;]=$_POST[&quot;password&quot;]; // con questo associo il parametro username che mi &egrave; stato passato dal form alla variabile SESSION password
$query = mysql_query(&quot;SELECT * FROM users WHERE username='&quot;.$_POST[&quot;username&quot;].&quot;' AND password ='&quot;.$_POST[&quot;password&quot;].&quot;'&quot;)  //per selezionare nel db l'utente e pw che abbiamo appena scritto nel log
or DIE('query non riuscita'.mysql_error());
// Con il SELECT qua sopra selezione dalla tabella users l utente registrato (se lo &egrave;) con i parametri che mi ha passato il form di login, quindi
// Quelli dentro la variabile POST. username e password.
if(mysql_num_rows($query)&gt;0){        //se c'&egrave; una persona con quel nome nel db allora loggati
$row = mysql_fetch_assoc($query); // metto i risultati dentro una variabile di nome $row
$_SESSION[&quot;logged&quot;] =true;  // Nella variabile SESSION associo TRUE al valore logge
header(&quot;location:prova.php&quot;); // e mando per esempio ad una pagina esempio.php// in questo caso rimander&ograve; ad una pagina prova.php
}else{
echo &quot;non ti sei registrato con successo&quot;; // altrimenti esce scritta a video questa stringa di errore
}
?&gt;

3 (1 Votes)
0
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