No seleccionó el nombre y lo está buscando.
$sql = 'SELECT email, password, name FROM admin WHERE email = ?';
o
$sql = 'SELECT * FROM admin WHERE email = ?';
debería solucionar el problema.
Adicional:puede eliminar todas sus declaraciones else ya que todas darán el mismo resultado.
<?php
include_once "inc/user-connection.php";
session_start();
$name = $_POST['name'];
$password = $_POST['password'];
$hashed_password = password_hash($password, PASSWORD_DEFAULT);
$email = $_POST['email'];
$username = $_POST['username'];
if (isset($_POST['admin-sign-in'])) {
if (!empty($email)) {
if (!empty($password)) {
$sql = 'SELECT * FROM admin WHERE email = ?';
// preparing the SQL statement
if ($stmt = $conn->prepare($sql)) {
$stmt->bind_param('s', $_POST['email']);
$stmt->execute();
$stmt->store_result(); // Store the result so we can check if the account exists in the database.
// If email exists in sign_up table
if ($stmt->num_rows > 0) {
$stmt->bind_result($email, $password, $name);
$stmt->fetch();
// if password user enters matches the one in the database
if (password_verify($password, $hashed_password)) {
$query = mysqli_query($conn, $sql);
$row = mysqli_fetch_array($query);
$_SESSION['name'] = $row['name'];
// upon successful login, redirect user to landing apge
header("location: dashboard.php");
die();
}
}
$stmt->close();
}
}
}
header("location: ../html/404-error.html");
die();
}
