[Solved] Redirect & Headers already sent [duplicate]

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You can only use header('...'); before any other output. In your case it should be:

<?php //beginning of the file
if (isset($_POST['Submit'])) {
    $message = $_POST['message'];
    $subject = $_POST['subject'];
    $country_id = $_POST['country_id'];
    createrow($message, $subject, $country_id);
    header('Location: memberprofile.php');
}
.....
?><!DOCTYPE ....
<HTML>....
.....

solved Redirect & Headers already sent [duplicate]