如何验证电子邮件，密码和确认密码？

-1

代码都OK，我想提出一些验证，说：“电子邮件已经被注册”和“密码犯规匹配” 这是标志整个代码了

<!DOCTYPE html> 
 
<html> 
 
\t <head> 
 
\t \t <title>Index</title> 
 
\t \t <link rel="stylesheet" type="text/css" href="bootstrap/css/bootstrap.css"> 
 
\t \t <script src="bootstrap/jquery-3.1.1.min.js"></script> 
 
\t \t <script src="bootstrap/js/bootstrap.min.js"></script> 
 
\t 
 
\t </head> 
 
\t <body> 
 
\t \t <nav class="navbar navbar-inverse" style="border-radius:0px 0px 0px 0px;"> 
 
\t \t \t <div class="container-fluid"> 
 
\t \t \t \t <div class="navbar-header"> 
 
\t \t \t \t \t <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"> 
 
\t \t \t \t \t \t <span class="sr-only">Toggle navigation</span> 
 
\t \t \t \t \t \t <span class="icon-bar"></span> 
 
\t \t \t \t \t \t <span class="icon-bar"></span> 
 
\t \t \t \t \t \t <span class="icon-bar"></span> 
 
\t \t \t \t \t </button> 
 
\t \t \t \t \t <a class="navbar-brand" href="#">JMK Sounds & Light</a> 
 
\t \t \t \t </div> 
 
\t \t \t \t <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> 
 
\t \t \t \t \t <ul class="nav navbar-nav"> 
 
\t \t \t \t \t \t <li><a href="index.php">Home</a></li> 
 
\t \t \t \t \t \t <li class="dropdown"> 
 
\t \t \t \t \t \t \t <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Equipments <span class="caret"></span></a> 
 
\t \t \t \t \t \t \t <ul class="dropdown-menu"> 
 
\t \t \t \t \t \t \t \t <li><a href="soundsys.php">Sound System</a></li> 
 
\t \t \t \t \t \t \t \t <li><a href="lights.php">Lights</a></li> 
 
\t \t \t \t \t \t \t </ul> 
 
\t \t \t \t \t \t \t <li><a href="about.php">About</a></li> 
 
\t \t \t \t \t \t \t <li><a href="contact.php">Contact Us</a></li> 
 
\t \t \t \t \t \t </li> 
 
\t \t \t \t \t </ul> 
 
\t \t \t \t \t 
 
\t \t \t \t \t <div class="collapse navbar-collapse pull-right" id="bs-example-navbar-collapse-1"> 
 
\t \t \t \t \t <ul class="nav navbar-nav"> 
 
\t \t \t \t \t \t <li class="dropdown"> 
 
\t \t \t \t \t \t \t <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Sign in | Sign up <span class="caret" ></span></a> 
 
\t \t \t \t \t \t \t <ul class="dropdown-menu" style="padding:5px;"> 
 
    \t \t \t \t \t \t \t <li> 
 
    \t \t \t \t \t \t \t \t <div class="form-group"> 
 
    \t \t \t \t \t \t \t \t \t <input type="text" class="form-control input-sm" placeholder="Username" style="margin-bottom:5px;" required/> 
 
\t \t \t \t \t \t \t \t \t \t <input type="text" class="form-control input-sm" placeholder="Password" style="margin-bottom:5px;" required/> 
 
\t \t \t \t \t \t \t \t \t \t <center><button class="btn btn-primary btn-sm">Sign in</button></center> 
 
\t \t \t \t \t \t \t \t \t </div> 
 
    \t \t \t \t \t \t \t </li> 
 
     \t \t \t \t \t \t \t <center><button class="btn btn-primary btn-sm" data-toggle="modal" data-target="#signup">Sign Up</button></center> 
 
\t \t \t \t \t \t \t \t \t <li> 
 
\t \t \t \t \t \t \t \t \t \t <form class="navbar-form navbar-right" action="header.php" method="post"> 
 
\t \t \t \t \t \t \t \t \t \t </form> 
 
\t \t \t \t \t \t \t \t \t </li> 
 
\t \t \t \t \t \t \t </ul> 
 
\t \t \t \t \t \t </li> 
 
\t \t \t \t \t </ul> 
 
\t \t \t \t \t </li> 
 
\t \t \t \t \t </ul> 
 
\t \t \t \t </div> 
 
\t \t \t </div> 
 
\t \t </nav> 
 
\t \t 
 
\t \t <div class="modal fade" id="signup" tabindex="-1" role="dialog"> 
 
\t \t \t <div class="modal-dialog modal-sm" role="document"> 
 
\t \t \t \t <div class="modal-content"> 
 
\t \t \t \t \t <div class="modal-header"> 
 
\t \t \t \t \t \t <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true"> &times; </span></button> 
 
\t \t \t \t \t \t <h4 class="modal-title">Sign Up</h4> 
 
\t \t \t \t \t </div> 
 
\t \t \t \t \t <div class="modal-body"> 
 
\t \t \t \t \t \t <form action="save.php" method="post">  
 
\t \t \t \t \t \t \t <div class="form-group"> 
 
\t \t \t \t \t \t \t \t \t \t 
 
\t \t \t \t \t \t \t \t <input type="text" name="fname" class="form-control input-sm" placeholder="First Name" required/><br /> 
 
\t \t \t \t \t \t \t \t <input type="text" name="sname" class="form-control input-sm" placeholder="Last Name" required/><br /> 
 
\t \t \t \t \t \t \t \t <center> 
 
\t \t \t \t \t \t \t \t \t <input type="radio" name="gender" value="Male" required> Male &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
 
\t \t \t \t \t \t \t \t \t <input type="radio" name="gender" value="Female" required> Female<br /><br /> 
 
\t \t \t \t \t \t \t \t </center> 
 
\t \t \t \t \t \t \t \t <input type="text" name="address" class="form-control input-sm" placeholder="Address" required/><br /> 
 
\t \t \t \t \t \t \t \t <input type="text" name="contact" class="form-control input-sm" placeholder="+639" required/><br /> 
 
\t \t \t \t \t \t \t \t <input type="text" name="email" class="form-control input-sm" placeholder="Email" required/><br /> 
 
\t \t \t \t \t \t \t \t <input type="text" name="uname" class="form-control input-sm" placeholder="Username" required/><br /> 
 
\t \t \t \t \t \t \t \t <input type="password" name="pword" class="form-control input-sm" placeholder="Password" required/><br /> 
 
\t \t \t \t \t \t \t \t <input type="password" name="cpword" class="form-control input-sm" placeholder="Confirm Password" required/><br /> 
 
\t \t \t \t \t \t \t \t <button type="button" class="btn btn-default btn-sm" data-dismiss="modal">Close</button> 
 
\t \t \t \t \t \t <button type="submit" name="submit" class="btn btn-primary btn-sm">Submit</button> 
 
\t \t \t \t \t 
 

 
\t \t \t \t \t \t \t </div> 
 
\t \t \t \t \t \t </form> 
 
\t \t \t \t \t </div> 
 
\t \t \t \t </div> 
 
\t \t \t </div> 
 
\t \t </div>

来源

2017-03-05 Erick Choi

-1

对于这种类型的验证，你可以使用PHP 这里是一个样本验证，可以查看和修改：

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

    // clean user inputs to prevent sql injections 
    $name = trim($_POST['name']); 
    $name = strip_tags($name); 
    $name = htmlspecialchars($name); 

    $email = trim($_POST['email']); 
    $email = strip_tags($email); 
    $email = htmlspecialchars($email); 

    $pass = trim($_POST['pass']); 
    $pass = strip_tags($pass); 
    $pass = htmlspecialchars($pass); 

    // basic name validation 
    if (empty($name)) { 
     $error = true; 
     $nameError = "Please enter your full name."; 
    } else if (strlen($name) < 3) { 
     $error = true; 
     $nameError = "Name must have atleat 3 characters."; 
    } else if (!preg_match("/^[a-zA-Z ]+$/",$name)) { 
     $error = true; 
     $nameError = "Name must contain alphabets and space."; 
    } 

    //basic email validation 
    if (!filter_var($email,FILTER_VALIDATE_EMAIL)) { 
     $error = true; 
     $emailError = "Please enter valid email address."; 
    } else { 
     // check email exist or not 
     $query = "SELECT userEmail FROM yourtable WHERE userEmail='$email'"; 
     $result = mysql_query($query); 
     $count = mysql_num_rows($result); 
     if($count!=0){ 
      $error = true; 
      $emailError = "Provided Email is already in use."; 
     } 
    } 
    // password validation 
    if (empty($pass)){ 
     $error = true; 
     $passError = "Please enter password."; 
    } else if(strlen($pass) < 6) { 
     $error = true; 
     $passError = "Password must have atleast 6 characters."; 
    } 

    // password encrypt using SHA256(); 
    $password = hash('sha256', $pass); 
    }

来源

2017-03-05 05:40:37

先生......你能以简单的方式解释这种手段的响应消息？ xD抱歉导致我只是一个初学者在PHP和SQL :(huhuhuhuhu –

trim，strip_tags，htmlspecialchars是用来实现sql注入，你可以搜索互联网的细节。下一个是模式匹配preg_match（“/^[a-zA-Z （$ email，FILTER_VALIDATE_EMAIL）用于验证电子邮件的电子邮件必须包含@和一个点。下一步它将检查数据库中的天气提供的电子邮件是存在或不存在。下一个哈希（'sha256'，$ pass）加密sequrity的通行证。谢谢请upvote。 –

谢谢先生：D好生病upvote谢谢你的样品嘿嘿 –

那么，这样做其实很简单。

您只需要尝试连接到数据库并在您的SQL中使用提供的电子邮件搜索表。我在下面的代码中使用了PDO扩展。

例子：

function Search_Customer($email) 
{ 
    global $db; 
    $query = " 
     SELECT customerID, CONCAT (firstName,' ', lastName) AS fullName, 
     city 
     FROM customers 
     WHERE email = :email"; 

    $statement = $db->prepare($query); 
    $statement->bindValue(':email', $email); 
    $statement->execute(); 
    $customer = $statement->fetchAll(); 
    $statement->closeCursor(); 

    return $customer; 
}

然后当你调用该方法，你检查返回值是空（“邮箱不存在”），或有返回的客户（“电子邮件存在”）。

当然也有涉及的密码，但同样的原则也适用于那里。

然后，您可以显示通过一个简单的“回声” /“打印”或更复杂的JavaScript代码

来源

2017-03-05 06:04:42 Chiaro

如何验证电子邮件，密码和确认密码？

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