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? ??? ??? MySQL ???? ? PHP ??? ??? MySQL? ???? ?? ??? ??????

? PHP ??? ??? MySQL? ???? ?? ??? ??????

Jan 03, 2025 pm 06:50 PM

Why Is My PHP Login Form Failing to Connect to MySQL?

? ??? ??? MySQL ??????? ??? ? ?? ??? ??????

???? ?? ??? ??? MySQL ??????? ??? ? ????. ?? ?? ??. ?? ??? ???? ??? ???? ?? ???? ???? ?????.

?? ???? ??:

?? ???? ??? ???? ??? ????? ???? ?? ?????. ?? ???? ?????. ????? ????? ????? ??? ?????password_hash()? ?? ??? ?????.

SQL ?? ??:

user- ??? ????. SQL ??? ?? ???? ??????. ??????? ???? ? ?? ???? SQL ?? ??? ????? ??? ???? ??? ????? ?????.

??? ?? mysqli ?? ?:

register.php

// DB Credentials
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "user_accounts2";

// Secure Connection
mysqli_report(MYSQLI_REPORT_ALL);
error_reporting(E_ALL);
ini_set("display_errors", 1);

// Database Connection
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// User Registration
if (isset($_POST['register'])) {
    $email = mysqli_real_escape_string($conn, $_POST['email']);
    $password = mysqli_real_escape_string($conn, $_POST['password']);

    // Password Hashing
    $hashed_password = password_hash($password, PASSWORD_DEFAULT);

    // Prepared Statement and Parameter Binding
    $stmt = $conn->prepare("INSERT INTO user_accounts2 (email, password) VALUES (?, ?)");
    $stmt->bind_param("ss", $email, $hashed_password);

    // Query Execution
    $stmt->execute();
}

// Close Connection
$stmt->close();
$conn->close();

login.php

// DB Credentials and Secure Connection Same as register.php

// User Login
if (isset($_POST['login'])) {
    $email = mysqli_real_escape_string($conn, $_POST['email']);
    $password = mysqli_real_escape_string($conn, $_POST['password']);

    // Prepared Statement and Parameter Binding
    $stmt = $conn->prepare("SELECT * FROM user_accounts2 WHERE email = ?");
    $stmt->bind_param("s", $email);

    // Query Execution
    $stmt->execute();
    $result = $stmt->get_result();

    if ($row = $result->fetch_assoc()) {
        // Password Verification
        if (password_verify($password, $row['password'])) {
            echo "Logged in successfully!";
        } else {
            echo "Invalid credentials";
        }
    } else {
        echo "User not found";
    }

    // Close Statement and Connection
    $stmt->close();
    $conn->close();
}

??? ??? pdo ?? ?:

PDO? ??? ??? ??? ?? ??? ?? ?? ???? ?????. [??: PDO ??? ??](https://stackoverflow.com/questions/5926241/php-pdo-user -??/5927236#5927236)

? ??? ? PHP ??? ??? MySQL? ???? ?? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

? ????? ??
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GroupBy? ???? ???? ????? ?? ??? ???? ? ???? ??? ? ??? ????? ? ?????. ?? ??, GroupByCustomer_ID? ???? ? ??? ? ???? ??? ? ????. ???? ? 1,000 ? ??? ? ??? ??? ?? ? ? ????. ?? ? ? ?? ??? GroupBy? ??????, ?? ?? ?? ???? ???? ??? ??? ? ? ????. ???? ???? ? ??? ? ??, ?? ?? ??? ? ?? ???? ???? ?????.

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MySQL?? ??? ?? ? ???? ?? MySQL?? ??? ?? ? ???? ?? Jul 07, 2025 am 01:41 AM

MySQL? ?? ?? ? ???? ?? ??? ??? ??, ?? ?? ? ???? ??? ??? ? ?????. ??, ??? ??? UTF8MB4? ?? ?? ??? ?? ??? ?????. ?? ??? UTF8MB4_UNICODE_CI? ?? ?? ?? ??? ???? UTF8MB4_BIN? ?? ?????. ??, ?? ??? ?? ??? ??, ??????, ??? ? ??? ??? ? ????. ??? ??? ?? UTF8MB4 ? UTF8MB4_UNICODE_CI? ?? ? ???? ???? ?? ????. ??, ?? ??? ?? ??? ?? ???? ?? ??, ?? ?? ???? ??? ??? ?? ???? ???? ??? ???? ???? ???????. ?? ?? ??? ???? ?? ???? ? ??? ? ?? ??? ???????.

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