Php registration page
Question
I created a sign up page for my website in php . In my code I put if the username , password confirm password and/or email is empty it would give then an error , which it does , but it still says that the user was created . I don't want that to happen . If any of the user fields are empty I want them to go back to the sign up page and fill out the missing fields . All it does is give the echo statement and then it says user was created .
sign up.php:
<html>
<head>
<link rel="stylesheet" type="text/css" href="css.css">
<title>Sign Up</title>
</head>
<body bgcolor="#E6E6FA">
<h2 style="text-align: right"><b style="font-size: 25px">Sign Up Below</b></h2>
<form name="registration" method="post" action="process2.php">
<p align="right"><input type="text" name="username" size="35" id="Username" placeholder="User Name" /></p>
<br></br>
<p align="right"><input type="password" name="password" size="35" id="p w" placeholder="Password" /></p>
<br></br>
<p align="right"><input type="password" name="password2" size="35" id="pw2" placeholder="Confirm Password" /></p>
<br></br>
<p align="right"><input type="text" name="email" size="35" id="Email" placeholder="E-mail" /></p>
<p align="right"><input type="submit" name="submit" value="submit"></p>
</form>
<h3 style="font-size: 20px"><a href="register.php">Go Back To Home Screen</a> </h3>
</body>
</html>
<?php
if(empty($username)){ echo"Please enter a username to sign up.<br />";} else {}
if(empty($pw)){echo"Please enter a password to sign up.<br />";} else {}
if(empty($pw2)){echo"Please confirm your password to sign up.<br />";} else {}
if(empty($email)){ echo"Please enter a email to sign up.<br />";} else {}
?>
Process2.php:
<?php
include("db.php");
if(empty($username)){ echo"Please enter a username to sign up.<br />";} else {}
if(empty($pw)){echo"Please enter a password to sign up. <br />";} else {}
if(empty($pw2)){echo"Please confirm your password to sign up.<br />";} else {}
if(empty($email)){ echo"Please enter a email to sign up.<br />";} else {}
if (isset($_POST['submit'])) {
if ($_POST['password'] == $_POST['password2']) {
$username = $_POST['username'];
$pw = $_POST['password'];
$pw2 = $_POST['password2'];
$email = $_POST['email'];
// validate and sanitize all of these inputs
// and see that they are not blank at the same time
// Do your MySql here to find the $username and
// bring out result of find in $username_result
if($username_result > 0){
echo "This username is in use.<a href= signup.php>Enter a different username</a> ";
// exit; // or send them back to registration page
} else {
// it is not in use so put it in
$pw = password_hash($pw, PASSWORD_BCRYPT, array('cost' => 10));
$pw2 = password_hash($pw2, PASSWORD_BCRYPT, array('cost' => 8));
$sql = "INSERT into users VALUES(null, '$username', '$pw', '$pw2', '$email')";
if(mysqli_query($conn, $sql)){
// if insert checked as successful echo username and password saved successfully
echo"Your user was created. <a href= signin.php>Click here to login </a><br />";
}else{
echo "Sorry there has been an error, please try again."; // and send them back to registration page
}
}
}else{
echo "The passwords do not match. <a href= signup.php>Try again</a><br />"; // and send them back to registration page
}
}
?>
So basically what I tried is putting the if the fields are empty statements before the code that sends the information to the database it doesn't work . I tried putting it after the code that sends the information to database it didn't work . I also tried putting it on the sign up page but it didn't work either .
What I want to happen is if any of the fields are empty nothing will be sent to the database . Can someone help me ?
update :
<?php
if (empty($_POST['username']) || empty($_POST['password']) || empty($_POST['password2']) || empty($_POST['email']) || empty($_POST['submit'])) {
$error = "";
if (!empty($_POST['submit'])){
if(empty($_POST['username']))
$error .= "Please enter a username. ";
if(empty($_POST['password']))
$error .= "Please enter a password. ";
if(empty($_POST['password2']))
$error .= "Please confirm your password. ";
if(empty($_POST['email']))
$error .= "Please enter your email. ";
}
include("db.php");
?>
<html>
<head>
<link rel="stylesheet" type="text/css" href="css.css">
<title>Sign Up</title>
</head>
<body bgcolor="#E6E6FA">
<h2 style="text-align: right"><b style="font-size: 25px">Sign Up Below</b></h2>
<form name="registration" method="post">
<p align="right"><input type="text" name="username" size="35" id="Username" placeholder="User Name" /></p>
<br></br>
<p align="right"><input type="password" name="password" size="35" id="p w" placeholder="Password" /></p>
<br></br>
<p align="right"><input type="password" name="password2" size="35" id="pw2" placeholder="Confirm Password" /></p>
<br></br>
<p align="right"><input type="text" name="email" size="35" id="Email" placeholder="E-mail" /></p>
<p align="right"><input type="submit" name="submit" value="submit"></p>
</form>
<?php
if ($error)
echo $error;
?>
<h3 style="font-size: 20px"><a href="register.php">Go Back To Home Screen</a> </h3>
</body>
</html>
<?php
}
else if (($_POST['submit'])){
if (isset($_POST['submit'])) {
if ($_POST['password'] == $_POST['password2']) {
$username = $_POST['username'];
$pw = $_POST['password'];
$pw2 = $_POST['password2'];
$email = $_POST['email'];
// validate and sanitize all of these inputs
// and see that they are not blank at the same time
// Do your MySql here to find the $username and
// bring out result of find in $username_result
if($username_result > 0){
echo "This username is in use.<a href= signup.php>Enter a different username</a> ";
// exit; // or send them back to registration page
} else {
// it is not in use so put it in
$pw = password_hash($pw, PASSWORD_BCRYPT, array('cost' => 10));
$pw2 = password_hash($pw2, PASSWORD_BCRYPT, array('cost' => 8));
$sql = "INSERT into users VALUES(null, '$username', '$pw', '$pw2', '$email')";
if(mysqli_query($conn, $sql)){
// if insert checked as successful echo username and password saved successfully
echo"Your user was created. <a href= signin.php>Click here to login </a><br />";
}else{
echo "Sorry there has been an error, please try again."; // and send them back to registration page
}
}
}else{
echo "The passwords do not match. <a href= signup.php>Try again</a><br />"; // and send them back to registration page
}
}
?>
3 answers
solution1
0 2016-01-30 16:42:04
You need to redirect to signup.php when validation fails..For this you can check the input and if either of it empty then you can redirect in process2.php as:
if(empty($username) || empty($pw) || empty($pw2) || empty($email))
{
header( "refresh:5;url=signup.php" );
} else {
//You can do your things here..
}
solution2
0 2016-01-30 16:48:24
首先检查您与数据库的连接，还检查您的用户表，如果该字段可为空 ，则为空 ，那么您可能想要在代码中放置一些try-catch块以查看错误。
solution3
0 ACCPTED 2016-01-30 17:13:28
I would place some of the signup and process code in the same page like this in signup.php (notice I have also removed the "action" code from the form tag:
<?php
if (empty($_POST['username']) || empty($_POST['password']) || empty($_POST['password2']) || empty($_POST['email']) || empty($_POST['submit'])){
$error = "";
if (!empty($_POST['submit'])){
if(empty($_POST['username']))
$error .= "Please enter a username. ";
if(empty($_POST['password']))
$error .= "Please enter a password. ";
if(empty($_POST['password2']))
$error .= "Please confirm your password. ";
if(empty($_POST['email']))
$error .= "Please enter your email. ";
}
?>
<html>
<head>
<link rel="stylesheet" type="text/css" href="css.css">
<title>Sign Up</title>
</head>
<body bgcolor="#E6E6FA">
<h2 style="text-align: right"><b style="font-size: 25px">Sign Up Below</b></h2>
<form name="registration" method="post">
<p align="right"><input type="text" name="username" size="35" id="Username" placeholder="User Name" /></p>
<br></br>
<p align="right"><input type="password" name="password" size="35" id="p w" placeholder="Password" /></p>
<br></br>
<p align="right"><input type="password" name="password2" size="35" id="pw2" placeholder="Confirm Password" /></p>
<br></br>
<p align="right"><input type="text" name="email" size="35" id="Email" placeholder="E-mail" /></p>
<p align="right"><input type="submit" name="submit" value="submit"></p>
</form>
<?php
if ($error)
echo $error;
?>
<h3 style="font-size: 20px"><a href="register.php">Go Back To Home Screen</a> </h3>
</body>
</html>
<?php
}
else if (!empty($_POST['submit'])){
//place most of the code from your process.php code here
echo "processing";
}
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