默认单选按钮正在选择PHP

Question

我是php和MYSQL的新手。对于摩洛哥油，单击“是”或“否”时，将检查单选按钮。但是，单击时打印状态为是/否。无论如何都会检查默认的否。你能帮我解决这个问题吗？谢谢！

echo '<tr>
                <td>' . _('Signed Moroccan Oil?') . '</td>';
                if(strtoupper($_POST['signedMor']) == 'YES'){
                    echo '<td>  <input type="radio" name="signedMor" id="signedMor" value="Yes" checked="checked">Yes
                                <input type="radio" name="signedMor" id="signedMor" value="No">No</td>';
                } else {
                    echo '<td>  <input type="radio" name="signedMor" id="signedMor" value="Yes">Yes
                                <input type="radio" name="signedMor" id="signedMor" value="No" checked="checked">No</td>';
                }
        echo '</tr>';



        echo '<tr>
                <td>' . _('Print Statement?') . '</td>';
                if(strtoupper($_POST['printStatement']) == 'Y'){
                    echo '<td>  <input type="radio" name="printStatement" id="printStatement" value="Y" checked="checked">Yes
                                <input type="radio" name="printStatement" id="printStatement" value="N">No</td>';
                } else {
                    echo '<td>  <input type="radio" name="printStatement" id="printStatement" value="Y">Yes
                                <input type="radio" name="printStatement" id="printStatement" value="N" checked="checked">No</td>';
                }
        echo '</tr>';