@dezrael The issue you're facing with the PDO prepare statement appears to be due to the placeholder syntax and incorrect use of bound parameters. Let's go through it step-by-step.

Original Code Analysis You originally wrote:

php Copy code if ($_SERVER['REQUEST_METHOD'] === 'POST') { $db->query('INSERT INTO notes(body, user_id) VALUES(:body, :user_id)', [ 'body' => $_POST['body'], 'user_id' => 1 ]); } This code should work, but it looks like there might be an issue with how your query method is defined in your Database class. The error message indicates a syntax error at the :body placeholder.

Let's check if the query method correctly uses prepare and execute.

Solution: Verify Your Database Class Query Method Here’s a sample way to implement the query method for parameterized SQL queries:

php Copy code class Database { protected $connection;

public function __construct()
{
    $dsn = 'mysql:host=localhost;dbname=your_database;charset=utf8mb4';
    $username = 'your_username';
    $password = 'your_password';

    try {
        $this->connection = new PDO($dsn, $username, $password);
        $this->connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    } catch (PDOException $e) {
        echo "Connection failed: " . $e->getMessage();
    }
}

public function query($sql, $params = [])
{
    $statement = $this->connection->prepare($sql);
    $statement->execute($params);  // Execute with the bound parameters
    return $statement;
}

} Corrected Code for Inserting the Data Now, you can use the corrected method like this:

php Copy code if ($_SERVER['REQUEST_METHOD'] === 'POST') { $db->query('INSERT INTO notes (body, user_id) VALUES (:body, :user_id)', [ ':body' => $_POST['body'], // Ensure correct key with colon prefix ':user_id' => 1 ]); } Important Points to Note: Bound Parameter Syntax: When using placeholders, ensure that the keys in the $params array (:body and :user_id) match the placeholders in the SQL query exactly. Check for Null Values: If $_POST['body'] is not set or is empty, it will insert an empty value. You may want to verify that $_POST['body'] contains data before running the query. Debugging: You can also add var_dump($_POST) before the query to make sure $_POST['body'] has the data you expect. Testing the Code With this setup, run the code again to see if the error is resolved. If there’s still an issue, it’s possible that $_POST['body'] is empty or not coming through as expected.

Always Escape Untrusted Input