session_start();

$title = "Skate Shop - Login";

$stylesheet = "login";

$extra = "";

include "partials/header.php";

include "partials/db.php";

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

$username = $_POST["uid"];

$pwd = $_POST["pwd"];

$stmt = mysqli_prepare($conn, "SELECT * FROM customer WHERE username=?");

mysqli_stmt_bind_param($stmt, "s", $username);

mysqli_stmt_execute($stmt);

$result = mysqli_stmt_get_result($stmt);

if($row = mysqli_fetch_assoc($result)){

if (password_verify($pwd, $row['password'])) {

$_SESSION["userid"] = $row["customer_id"];

$_SESSION["useruid"] = $row["username"];

exit();

}else{

echo "fuck";

exit();

}

}else{

echo "fuck";

exit();

}

mysqli_stmt_close($stmt);

}

<div class="container reg_form">

<form class="row justify-content-center" method="post" action="profile.php">

<h3>Welcome back!</h3>

<div class="mb-3 col-12 col-md-4">

<label for="username" class="form-label">Username</label>

<input type="text" class="form-control" name = "uid" placeholder="enter you username">

</div>

<div class="w-100"></div>

<div class="mb-3 col-12 col-md-4">

<label for="password" class="form-label">Password</label>

<input type="password" name = "pwd" class="form-control" aria-describedby="passwordHelpBlock">

</div>

<div class="w-100"></div>

<div class="mb-3 col-12 col-md-4">

<button type="submit" name="submit" class="btn btn-success" href="shop.php">Log in</button>

<a class="reg" href="registration.php">Registration</a>

</div>

<div class="w-100"></div>

<div class="mb-3 col-12 col-md-4">

<?php

if (isset($_GET["error"])) {

if ($_GET["error"] == "emptyinput") {

echo "<p>Fill in all fields</p>";

} else if ($_GET["error"] == "wronglogin") {

echo "<p>Incorrect login</p>";

}

}

?>

</div>

</form>

</div>

include 'partials/footer.php';