CODEWITHSUNDEEP
php
James Gould
James Gould

Reputation: 4702

empty() check not validating after POST

I'm setting a session variable in my header.php here:

<?php

session_start();

if(empty($_SESSION['name'])) {
    ?>
    No name set! <br>
    <form action="" method="post">
        <input type="text" name="textName"/>
        <input type="submit" name="submitName" value="Log in"/>
    </form>

    <?php
    if(isset($_POST['submitName'])) {
        $_SESSION['name'] = $_POST['textName'];

    }
}

and validating that the name variable is set on my index here:

<?php

include 'header.php';

if(!empty($_SESSION['name'])){
    ?>
<a href="session_kill.php">Log out</a>
<?php
}

?>

I can confirm that the session variable exists because the logout link appears.

After submitting a name via the form, the session variable updates but the empty() check doesn't reoccur, meaning the textarea stays on the page unless I refresh.

Can anyone tell me why this happens?

Upvotes: 0

Views: 41

Answers (1)

Kinshuk Lahiri
Kinshuk Lahiri

Reputation: 1500

Take this part:

if(isset($_POST['submitName'])) {
    $_SESSION['name'] = $_POST['textName'];

}

above this:

if(empty($_SESSION['name'])) {}

When you submit the form, at the beginning; since the session is empty and hence the form remains there and then the session is initialized. And when you refresh the page the session check works.

Upvotes: 5

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