What are some common pitfalls when updating multiple columns in a MySQL database using PHP?

One common pitfall when updating multiple columns in a MySQL database using PHP is not properly sanitizing user input, which can lead to SQL injection attacks. To avoid this, always use prepared statements with parameterized queries to securely update multiple columns in a database. 

// Assume $conn is the mysqli connection object

// Sanitize user input
$column1 = mysqli_real_escape_string($conn, $_POST['column1']);
$column2 = mysqli_real_escape_string($conn, $_POST['column2']);

// Prepare and execute the update query
$stmt = $conn->prepare("UPDATE table_name SET column1 = ?, column2 = ? WHERE id = ?");
$stmt->bind_param("ssi", $column1, $column2, $id);

$id = 1; // Assuming the id is 1
$stmt->execute();

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

Keywords

MySQL PHP UPDATE query multiple columns database manipulation

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