How can one ensure that prepared statements are correctly implemented in PHP to avoid errors like "Call to a member function bind_param() on a non-object"?

To ensure that prepared statements are correctly implemented in PHP and avoid errors like "Call to a member function bind_param() on a non-object", make sure to check if the prepare statement was successful before attempting to bind parameters. This error typically occurs when the prepare statement fails, resulting in a non-object being returned. 

// Correctly implement prepared statements in PHP to avoid errors like "Call to a member function bind_param() on a non-object"

// Establish a database connection
$mysqli = new mysqli("localhost", "username", "password", "database");

// Check if the connection was successful
if ($mysqli->connect_error) {
    die("Connection failed: " . $mysqli->connect_error);
}

// Prepare the SQL statement
$stmt = $mysqli->prepare("SELECT * FROM users WHERE username = ?");
if (!$stmt) {
    die("Prepare failed: " . $mysqli->error);
}

// Bind parameters and execute the statement
$username = "john_doe";
$stmt->bind_param("s", $username);
$stmt->execute();

// Process the results
$result = $stmt->get_result();
while ($row = $result->fetch_assoc()) {
    // Process each row
}

// Close the statement and connection
$stmt->close();
$mysqli->close();

Keywords

prepared statements bind_param PHP error handling non-object

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