Reload URL

<?php

if (isset($_POST['example']) && (isset($_POST['actual_position']) && !empty($_POST['actual_position'])) && (isset($_POST['final_position']) && !empty($_POST['final_position']))) {
    $actual_link = 'http://' . $_SERVER['HTTP_HOST'] . '/test.php';
    $actual_link.= '?actual_position=' . $_POST['actual_position'] . '&final_position=' . $_POST['final_position'];

    // As you see over the variable $actual_link now contains the name and the values from the HTML input fields.
    //
    // This task could also be done easily by removing this php if condition and replace the HTML form method from POST to GET.
    // The reason I am using this example is just in case you want to extend the link with more data.
    // Maybe you need some data from your database? What do I know?

    // Lets add more data to the link
    $actual_link.='&more_data=a_value';

    header('Location: ' . $actual_link); return;
}

echo '
    <form method="POST">
        <label for="actual_position">
            <span>From: <span class="required"></span></span>
            <input name="actual_position" type="text" maxlength="512" id="actual_position" class="searchField"
                value="' . (!empty($actual_position) ? $_GET['actual_position'] : '') . '" />
        </label>

        <label for="final_position">
            <span>To: <span class="required"></span></span>
            <input name="final_position" type="text" maxlength="512" id="final_position" class="searchField"
                value="' . (!empty($final_position) ? $_GET['final_position'] : '') . '" />
        </label>

        <input type="submit" name="example" value="Start redirect">
    </form>
';

?>