PHP Password Protect
===

I have been researching for so long, and I've done this hundreds of times, but I forgot now.  The simplest thing.  How to password protect in PHP.  Please help, when I click submit, nothing pops up.  Here's my code:

    <html>
    <style type="text/css">
    #textbox1 {
    text-shadow:2px 2px 3px #000000;
    }
    
    label {
    text-shadow:2px 2px 3px #000000;
    font-family:"Arial";
    }
    </style>
    </style>
    <script type="text/javascript">
    function clearText(target){target.value= "";}
    </script>
    <head>
    <center>
    <form action="" method="POST">
    <label face="Arial">Password:  </label><input id="textbox1" type="password" name="password" value="" onfocus="clearText(this)">
    <input id="button" type="submit" value="Login to Uploader">
    </form>
    </center>
    </html>
    <?php
    
    $pass = $_POST['password'];
    $submit = $_POST['submit'];
    
    if (isset($_POST['submit'])) {
    if ($pass == "pengsuploader123" || $pass="pass") {
    echo "Test";
    } else {
    echo "Wrong!";
    }
    }
    
    ?>