php实现数据粘性例子

　　例子??

<meta charset="utf-8"><?php/** * Created by PhpStorm. * User: huangjiaming * Date: 16/7/18 * Time: 下午5:15 */if(isset($_POST[‘submit‘])) {    @$fan = $_POST[‘fan‘];    @$email = $_POST[‘email‘];    $output_form = false;

    if (empty($fan) && empty($email)) {        echo "邮箱和反馈不能为空";        $output_form = true;    }    if (!empty($fan) && empty($email)) {        echo "邮箱不能为空";        $output_form = true;    }    if (!empty($email) && empty($fan)) {        echo "反馈不能为空";        $output_form = true;    }}else{    $output_form = true;}if($output_form) {    ?>

    <form action="<?php echo $_SERVER[‘PHP_SELF‘] ?>" method="post">        <label for="email"> 邮箱：</label>       <input type="text" id="email" name="email" value="<?php echo @$email; ?>" /><br/>        <label for="fan"> 反馈：</label>        <input type="text" id="fan" value="<?php echo @$fan; ?>" name="fan" />        <input type="submit" value="sure" name="submit">    </form>

    <?php

}    ?>