Detect Input Content to Redirect to a Specific Page with PHP

Question

I have the following in my HTML:

<input type="text" name="code" />
<input type="submit" value="Submit" />

What I want to do is to redirect the user to page1.html when s/he enters, let's say, 12345 and redirect him/her to page2.html when s/he enters 56789. How may I do this with PHP? I'm okay with using JavaScript as well.

Let me rephrase that ^{_{(just in case)}}. I want to write 12345 in the input field, and after clicking the Submit button, to be redirected to page1.html. The same principle for 56789 and page2.html.

I found this old jQuery code of mine and changed it a bit. I'd be glad to hear your suggestions to polish it and achieve what I want.

$('input').keyup(function () {
    var val = $(this).val();

    var newVal = val.split('1234').join('HELLO');

    if (newVal !== val) {
        window.open("http://localhost:8000/page1.html");
    }
});

Additionally, is this right (for PHP)? _{^{(didn't try it yet)}}

if ($_POST['code'] == '1234'){
  header("Location: redirect_to_me.php");
}

^{_{Please bear with me as I am yet a fledgling in this field.}}

Thank you.

Answer 1

Try this

$(document).ready(function(){
var pages = {
    "123456" : "page1.html",
    "56789" : "page2.html",
    "5252" : "page3.html"
}
$('input[type=submit]').click(function (e) {
e.preventDefault();
var val = $('input[name=code]').val();
var page = pages[val];

 window.location = page;

 });
 });

Answer 2

Check your form submission (_POST or _GET) then redirect depending on the value of 'text'. Just remember, you can only do a Location redirect when no output has been sent to the browser.. ..and always 'exit' after.

if(isset($_POST)){

    if($_POST['text'] == '12345'){

        header ("Location: page1.html");
        exit;

   } elseif($_POST['text'] == '6789'){

        header ("Location: page2.html");
        exit;

   } 

}

Answer 3

To do this in PHP;

<form action="file.php" method="POST">
    <input type="text" name="code" />
    <input type="submit" value="Submit" />
</form>

And your file.php using a switch statement;

switch($_POST['code']):

    case '123456':
        header('Location: page1.html');
    break;

    case '56789':
        header('Location: page1.html');
    break;

    case '5252':
        header('Location: page3.html');
    break;

    default:
        header('Location: codenotfound.html');

endswitch;

Or a more elegant solution;

$page = 'codenotfound.html';

$pages = array(
    '123456' => 'page1.html',
    '56789' =>'page2.html',
    '5252' => 'page3.html'
);

if(isset($pages[$_POST['code']])):
    $page = $pages[$_POST['code']];
endif;

header('Location: ' . $page);