Question

我想通过电子邮件验证表单。我不知道我的代码是否合适。我不知道把所有的东西放在一起做一些可能与嵌套if。我想做这个： 1）如果用户名，密码或地址为空，则为每个用户提供回音是否有效以及其他无效的回声 2）当电子邮件地址拼写错误时给出回声，如果它是正确的另一个回声。 3）如果电子邮件地址为空以给出回声而对于另一回声则为假 4）与用户相同，密码分别为每个空，2个回一个为真，另一个为假。请帮忙！

<html>

<head></head>

<body>


<form action ="form_testare1.php" method = "POST">
User:<input type="text" name = "user" />
<br/>
password:<input type = "password" name = "password" />
<br/>
Email:<input type = "text" name = "email" />
<br/>
<input type = "submit" name = "submit" value ="submit"/>

</form>

<?php

$password = $_POST['password'];
$user = $_POST['user'];
$email = $_POST['email'];

if(isset($_POST['user']) && ($_POST['password']) && ($_POST['email']))
{
    echo "user , password and  email are set<br/>";
}
else
{

echo "user:$user password:$password or email:$email not set<br/>";

}

if(strlen($password)>0 && strlen($user)>0 && strlen($email)>0){



        echo "User: $user<br/>";
        echo "Password: $password<br/>";
        echo "Email: $email<br/>";

    }
        else
    {
    echo "user:$user password:$password or email:$email are empty<br/>";
    }


        if(filter_var($email,FILTER_VALIDATE_EMAIL))
                    {

                    echo "emailul is valid";

                    }
                    else
                    {
                        echo "emailul is not valid<br/>";
                    }





?>
</body>

</html>

Answer 1

要简短，您可以将输入命名为data[name]，data[email] ... 并检查这样

foreach($_POST['data'] as $key=>$value){ 
 if($key == 'email'){ 
  if(!empty($value) && preg_match("/^(.*)@(.*)\.(.*)$/",$value)){ 
   echo 'email is valid'; 
  }else{ 
   echo 'email is invalid'; 
  } 
 }else{ 
  echo !empty($value)?"$key is correct":"$key is incorrect"; 
 } 
}

Answer 2

之前必须纠正

 if(isset($_POST['user']) && isset($_POST['password']) && isset($_POST['email']))

Answer 3

这样改名？

<form action ="form_testare1.php" method = "POST">
User:<input type="text" name = data['user'] />
<br/>
password:<input type = "password" name = data['password'] />
<br/>
Email:<input type = "text" name = data['email'] />
<br/>
<input type = "submit" name = "submit" value ="submit"/>

</form>

使用嵌套if验证表单和电子邮件

3 个答案: