尝试在前端创建自定义注册页面，但在错误/成功情况下尝试重新加载页面时，会在chrome中显示该消息

“确认表单重新提交

您正在查找输入的已用信息的页面。返回该页面可能会导致重复您所做的任何操作。是否要继续？“”

我的代码：

the_post();//Iterate the post index in the loop.    
get_header();
$err = \'\';
$success = \'\';

global $wpdb, $PasswordHash, $current_user, $user_ID;

if(isset($_POST[\'task\']) && $_POST[\'task\'] == \'register\' ) {

    $pwd1 = (trim($_POST[\'pwd1\']));
    $pwd2 = (trim($_POST[\'pwd2\']));
    $first_name = (trim($_POST[\'first_name\']));
    $last_name = (trim($_POST[\'last_name\']));
    $email = (trim($_POST[\'email\']));
    $username = (trim($_POST[\'username\']));

    if( $email == "" || $pwd1 == "" || $pwd2 == "" || $username == "" || $first_name == "" || $last_name == "") {
        $err .= \'Please don\\\'t leave the required fields.<br/>\';
    }
    if(!filter_var($email, FILTER_VALIDATE_EMAIL)) {
        $err .= \'Invalid email address.<br/>\';
    }
    if(email_exists($email) ) {
        $err .= \'Email already exist.<br/>\';
    }
    if(username_exists($username) ) {
        $err .= \'username already exist.<br/>\';
    }
    if($pwd1 <> $pwd2 ){
        $err .= \'Password do not match.<br/>\';
    } else {

        $user_id = wp_insert_user( array (\'first_name\' => apply_filters(\'pre_user_first_name\', $first_name), \'last_name\' => apply_filters(\'pre_user_last_name\', $last_name), \'user_pass\' => apply_filters(\'pre_user_user_pass\', $pwd1), \'user_login\' => apply_filters(\'pre_user_user_login\', $username), \'user_email\' => apply_filters(\'pre_user_user_email\', $email), \'role\' => \'subscriber\' ) );
        if( is_wp_error($user_id) ) {
            $err = \'Error on user creation.\';
        } else {
            do_action(\'user_register\', $user_id);

            $success = \'You\\\'re successfully register\';
        }

    }

}
    ?>
<div class="wrapper">
    <form method="post">
        <h3 class="center h1_head">Create Account.</h3>
        <h6 class="center">* Required Fields</h6>
        <!--display error/success message-->
        <div id="message">
        <?php
            if(! empty($err) ) :
                echo \'<p class="error">\'.$err.\'\';
            endif;  
            if(! empty($success) ) :
                echo \'<p class="error">\'.$success.\'\';               
            endif;
        ?>
        </div>
        <div class="row">
            <div class="">
                <input type="text" value="" name="first_name" id="first_name" class="validate"/>
                <label>* First Name</label>
            </div>
            <div >
                <input type="text" value="" name="last_name" id="last_name" class=" validate"/>
                <label>* Last Name</label>
            </div>
        </div>
        <div>
            <input type="text" value="" name="email" id="email" class="icon_prefix validate" />
            <label>* Email</label>
        </div>
            <div >
                <input type="text" value="" name="username" id="username" validate"/>
                <label  >* Username</label>
            </div>
            <div >
                <input type="text" value="" name="phone" id="phone" validate"/>
                <label >Phone</label>
            </div>

        </div>
        <div>
            <input type="password" value="" name="pwd1" id="pwd1" class="icon_prefix validate" />
            <label>* Password</label>
        </div>
        <div>
            <input type="password" value="" name="pwd2" id="pwd2" validate" />
            <label  >* Password again</label>
        </div>

        </div>
        <div class="alignleft"><p><?php if($success!= "") { echo $success; } ?> <?php if($err != "") { echo $err; } ?></p></div>
        <button type="submit" name="btnregister" class="button btn right" >Register</button>
        <input type="hidden" name="task" value="register" />
    </form>
</div>

<?php get_footer() ?>