php - Codeigniter 中的验证引擎 ajax 错误 200 parsererror

Question

我想使用验证引擎检查现有电子邮件。但是 Firebug 控制台中显示一个问题，如下所示:

遇到 PHP 错误

严重性:通知

消息:未定义索引:reg_em

文件名:controllers/user.php

行号:170

[“电子邮件”，true]

Ajax 错误:200 解析器错误

这是我的jquery.validationEngine-en.js:

"ajaxCheckEmail": {
                "url": base_url+"user/checkEmailExistence/",
                "extraDataDynamic": ['#reg_em'],
                "alertTextOk": "* This email is available",
                "alertText": "* This email is already taken",
                "alertTextLoad": "* Validating, please wait"
            },

电子邮件字段 View :

<input type="text" class="text_item_val_style validate[required,ajax[ajaxCheckEmail],custom[email]]" name="useremail" id="reg_em" style="height:21px;"/>

Controller :

函数 checkEmailExistence(){

   $email        = $_REQUEST['reg_em'];
   $getStatus = $this->users->existing_email_check($email);
   echo $getStatus;

}

型号:

function existing_email_check($email){
    $valid  = true;
    $rs     = $this->db->where('email', $email)->get('users');
    if($rs->num_rows() > 0){
        $valid  = false;
    }
    $rs->free_result();
    $arr    = array('email',$valid);
    return json_encode($arr);
}

Answer 1

而不是这个 $email = $_REQUEST['reg_em']; 写成 $email = $_REQUEST['useremail'];