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Editorial Team
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Asked: 2026-05-13T19:45:35+00:00

I’m using PHP, and am wondering what the best way is to handle simple

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I’m using PHP, and am wondering what the best way is to handle simple POSTs and AJAX POSTs without repeating code in the simplest way possible. Thanks!

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1 Answer

  1. Editorial Team

    Just create a form like this:

    <form action="formhandler.php" method="post">
    <!-- form data here -->
</form>

    And look what kind of request was fired in formhandler.php:

    if($_SERVER['REQUEST_METHOD'] == 'POST' /* && isset($_POST['var'])*/){
    if(isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest'){
        // Request was send by Ajax, so echo JSON-code
        echo '{"error": false}'
    } else {
        // No Ajax was used, so echo HTML-code
        echo '<html><head><title>Ok</title></head><body><p>Ok</p></body></html>';
    }
}

    The only thing you need to know is that $_SERVER['HTTP_X_REQUESTED_WITH'] contains information if the form was submitted by an Ajax request

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