How to Make a PHP Form That Submits to Self

How do I make a PHP form that submits to self?

The proper way would be to use $_SERVER["PHP_SELF"] (in conjunction with htmlspecialchars to avoid possible exploits). You can also just skip the action= part empty, which is not W3C valid, but currently works in most (all?) browsers - the default is to submit to self if it's empty.

Here is an example form that takes a name and email, and then displays the values you have entered upon submit:

<?php if (!empty($_POST)): ?>
    Welcome, <?php echo htmlspecialchars($_POST["name"]); ?>!<br>
    Your email is <?php echo htmlspecialchars($_POST["email"]); ?>.<br>
<?php else: ?>
    <form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
        Name: <input type="text" name="name"><br>
        Email: <input type="text" name="email"><br>
        <input type="submit">
    </form>
<?php endif; ?>

HTML Form Submit To Self

Aside from the fact the equals is missing from your action attribute in your form element.

Your inputs need name attributes:

<tr>
    <td>Username:</td>
    <td><input id="loginUsername" name="loginUsername" type="text" /></td>
</tr>

Self Submit PHP Form Validation

NOTE : You have typo mistakes in your form tag.you used double quote inside double quote.

Insted of using this

<form method="post" action="<?php echo htmlspecialchars($_SERVER["REQUEST_URI"]); ?>">
and
if ($_SERVER["REQUEST_METHOD"] == "POST") {

Use

<form method="post" action="<?= $_SERVER['PHP_SELF'] ?>">
and
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_POST['submitbutton'])) {
//SO IT WILL PERFORM ONLY WHEN SUBMIT BUTTON WAS PRESSED

For More You can Learn it here

Or Also Live Demo is available

submit form to self

I think you have a couple of options here.

Submit the form onto itself

<?php
    if('POST' == $_SERVER['REQUEST_METHOD']) {
        // process the form here
    }
?>
<form action="" method="POST">
    <input type="text" class="emailField" placeholder="email address" name="email" />
    <button type="submit">
        <div class="submit" />
    </button>
</form>

Redirect back to the form

Add something like this in submit.php where you want to show the form.

<?php
    header('Location: http://example.org/form.php');
    exit;
?>

php form action php self

How about leaving it empty, what is wrong with that?

<form name="form1" id="mainForm" method="post" enctype="multipart/form-data" action="">

</form>

Also, you can omit the action attribute and it will work as expected.

PHP - Self form submission: $_SERVER['PHP_SELF'] OR action= ?

You can use either (PHP_SELF or empty string). but why would you use FILTER_SANITIZE_STRING for this? You'd better to use htmlentities() instead of filter_var in this case, if your path contains filtered characters (e.g. <), the form won't submit.

I prefer giving a string, <base href=> can cause trouble when using empty values.
Example:

<form action="<?php echo htmlentities($_SERVER['PHP_SELF']);?>" method="post">
</form>

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