insert user info into the databasa php and mysql - php

Question

hi guys please l need some help. lm setting up a user registration sign up form. but l was NOT ABLE TO INSERT THE USER INFO IN TO THE DATABASE. And the code did not display any error message, meaning that everything is fine.
But when l tried to sign up it gives the form's error message "Failed to Register User".
this is the code: (and check at the bottom the connect.php code)
<?php
require_once('connect.php');
//print_r($_POST);
if(isset($_POST) & !empty($_POST)) {
$username = $_POST['username'];
$email = $_POST['email'];
$password = $_POST['password'];
// storing the sign up info in to the database
$sql = "INSERT INTO usermanagement (username, email, password) VALUES ('$username', '$email', '$password')";
//executing the query
$result = mysqli_query($connection, $sql);
if($result){
echo "User Registered Successfully";
}
else{
echo "Failed to Register User";
}
}
?>
<div id="form-signup">
<form id="signup-form" name="sign-up" action="sign.php" method="POST">
<h1>Create your profile</h1>
<p>
<input type="text" name="username" id="username" class="signup-input" required="required" placeholder="Full name*" >
</p>
<p>
<input type="email" name="email" class="signup-input" required="required" placeholder="Email*" >
</p>
<p>
<input type="password" name="password" class="signup-input" required="required" placeholder="Mot de passe*">
</p>
<!-- <p>
<input type="password" name="confirmpassword" class="signup-input" required="required" placeholder="Confirmez mot de passe*">
</p> -->
<p class="agree"> By signing up, you agree to Tout-Passe's <br> Terms of use<br> and Privacy Policy.
</p>
<p>
<input type="submit" class="signup-btn" name="btn-signup" value="Create Account">
</p>
<p class="already">Already on Tout-Passe? Log in</p>
</div><!--END OF PHASE-1-->
</form> <!--END OF SIGN-UP-->
</div><!--END FO ALLFORM-->
CONNECT CODE
<?php
$connection = mysqli_connect('localhost', 'root', '');
if(!$connection){
die("Database Connection Failed" . mysqli_error($connection));
}
$select_db = mysqli_select_db($connection, 'listing');//listing = database
if(!$select_db){
die("Failed to select database" . mysqli_error($connection));
}
?>

Answer 1

You did a mistake line 4, if(isset($_POST) & !empty($_POST)) { you have only one & you should have two like this: if(isset($_POST) && !empty($_POST)) {
Beside this, when your message tell you that it failed to register the user, it does not explain why, to solve this you have to add a mysqli_error() like this:
require_once('connect.php');
//print_r($_POST);
if(isset($_POST) && !empty($_POST)) {
$username = $_POST['username'];
$email = $_POST['email'];
$password = $_POST['password'];
// storing the sign up info in to the database
$sql = "INSERT INTO usermanagement (username, email, password) VALUES ('$username', '$email', '$password')";
//executing the query
$result = mysqli_query($connection, $sql);
if($result){
echo "User Registered Successfully";
}
else{
echo "Failed to Register User, reason: " . mysqli_error($connection);
}
}
Also there is two problems with your code:
It is faillibe to SQL injection. What is SQL injection?
You should test each of your global variables are set individually like this: if(isset($_POST['username']) && !empty($_POST['username'])) and not like this: if(isset($_POST) && !empty($_POST))