Why are my PDO Prepared Statements Failing to INSERT into MySQL?

Prepared Statement Errors with INSERT INTO in PDO

While navigating the complexities of PDO, you may encounter difficulties using prepared statements for MySQL queries. Consider the following code:

$dbhost = "localhost";
$dbname = "pdo";
$dbusername = "root";
$dbpassword = "845625";

$link = new PDO("mysql:host=$dbhost;dbname=$dbname","$dbusername","$dbpassword");

$statement = $link->prepare("INSERT INTO testtable(name, lastname, age)
        VALUES('Bob','Desaunois','18')");

    $statement->execute();

Despite following this approach, your database remains empty.

The solution lies in appropriate prepared statement usage. Instead, utilize the following:

$link->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

$statement = $link->prepare('INSERT INTO testtable (name, lastname, age)
    VALUES (:fname, :sname, :age)');

$statement->execute([
    'fname' => 'Bob',
    'sname' => 'Desaunois',
    'age' => '18',
]);

Prepared statements provide input sanitization. Use ':parameter' placeholders in your SQL statement, and pass an associative array of these parameters in the 'execute' function. Alternatively, use '?' placeholders and pass an array of values.

Both methods offer pros and cons. Binding parameter names enhances readability, while the latter method simplifies code.

The above is the detailed content of Why are my PDO Prepared Statements Failing to INSERT into MySQL?. For more information, please follow other related articles on the PHP Chinese website!