Question

我正在尝试将地址字段添加到我的注册表单中，但每当我提交寄存器时，我的地址行出错都是错误信息所说的

注意：未定义的索引：地址第9行的C：\ xampp \ htdocs \ profile \ register \ index.php

这是php代码：

<?php
    session_start();

    if(isset($_REQUEST['sub']) && isset($_POST['gender'])){
        $lname = strtoupper(trim(strip_tags($_POST['lname'])));
        $fname = strtoupper(trim(strip_tags($_POST['fname'])));
        $mname = strtoupper(trim(strip_tags($_POST['mname'])));
        $cours = strtoupper(trim(strip_tags($_POST['gender'])));
        $address =strtoupper(trim(strip_tags($_POST['address'])));
        $email = strip_tags($_POST['email']);

        $pass1 = strip_tags($_POST['pass']);

        if(empty($lname) || empty($fname) || empty($mname) || empty($email) || empty($address)
            || empty($pass1) || empty($cours) || $_POST['gender'] == 'none' ){
            $mess = "<font color='red'><i>Field(s) Required!</i></font>";
        }
                else if(!ctype_alpha($lname)||!ctype_alpha($fname)|| !ctype_alpha($mname)){
                        $mess = "<font color='red'><i>Incorrect Name Format!</i></font>";
                }
                else if(!preg_match('/^[a-zA-z0-9_.]*@[a-zA-z0-9.]*$/', $email)){
                        $mess = "<font color='red'><i>Incorrect Email Format!</i></font>";
                }
        else{
            $host = "localhost"; 
            $user = "root"; 
            $pass = ""; 
            $data = "school"; 

            $connect = mysql_connect($host, $user, $pass); 
            mysql_select_db($data, $connect); 

            if(mysql_query("INSERT INTO studentinfo(`userid`, `lastname`, `firstname`, `middlename`, `email`, `address`, `password`, `gender`) 
                VALUES (null,'$lname','$fname','$mname','$email',`$address`,'$pass1','$cours') ")){
                $mess = "Account Added to Database!";
            }
            else{
                $mess = "<font color='red'><i>Data Already Exist!</i></font>";
            }
        }
    }

    if(isset($_REQUEST['back'])){
        header( 'Location: ../' );
    }

    if(!empty($_SESSION['logon'])){
        header( 'Location: ../' );
    }   

?>

Answer 1

在该行之前检查是否定义了$_POST['address']：

if(isset($_POST['address'])){

}

Answer 2

您可能错过了名为“address”的输入字段。您可以使用PHP检查：

<?php
// long way around
if(array_key_exists("address",$_POST){
  // do something
}
else{
  // not found
}

// short way
$address = array_key_exists("address",$_POST) ? $_POST["address"] : "";
?>

当然，您可以对所有字段执行此操作并添加您自己的代码。否则，请告诉我们您的表单布局。你应该

<input type="text" name="address" />

代码。

Answer 3

尝试这种方式：

if(isset($_REQUEST['sub']) && isset($_POST['gender']))
{
    $address = isset($_POST['address']) ? 
        strtoupper(trim(strip_tags($_POST['address']))) : '';

我的PHP代码中未定义的索引

3 个答案: