如何在表单上保留用户生成的数据

大家好,我是OOP PHP的新手,我想模仿用户从过程生成数据的方式

这是我的代码:

<?php

类视图_LType扩展配置{

public function view_ltype(){
    $con = $this->con();
    $sql = "SELECT * FROM `tbl_leave_type`";
    $data = $con->prepare($sql);
    $data->execute();
    $result = $data->fetchAll();
    foreach ($result as $data){
        echo "
        <tr class='table-head'>
            <td class='numbers'>$data[leave_id]</td>
            <td>$data[leave_code]</td>
            <td>$data[leave_name]</td>
            <td class='small'>$data[leave_description]</td>
            <td><a href='#'></a></td>
        </tr>";
    }

}
public function select_ltype(){
    $con = $this->con();
    $sql = "SELECT * FROM `tbl_leave_type`";
    $data = $con->prepare($sql);
    $data->execute();
    $result = $data->fetchAll();
    foreach ($result as $data){
        echo '<option value="' . $data['leave_name'] . '">' . $data['leave_name'] . '</option>';

    
    }

}

}

html页面:

 <div class="form-group">
                    <label for="ltype">Leave Type</label>
                    <select name="ltype" id="ltype" name="ltype" required >
                        <option>Select leave...</option>
                        <?php $view_leave->select_ltype(); ?>
                    </select>
                </div>

$data[leave_name]是用户将选择的内容。当用户选择其首选的休假名称时,我希望回显所选内容。请帮帮我