What common mistakes can occur when updating a database record in PHP?

One common mistake when updating a database record in PHP is not properly sanitizing user input, which can lead to SQL injection attacks. To prevent this, use prepared statements or parameterized queries to safely update the database record. Additionally, forgetting to check if the update query was successful can result in errors going unnoticed. 

// Example of updating a database record using prepared statements

// Assuming $conn is the database connection

$id = $_POST['id'];
$newValue = $_POST['new_value'];

$stmt = $conn->prepare("UPDATE table_name SET column_name = ? WHERE id = ?");
$stmt->bind_param("si", $newValue, $id);

if ($stmt->execute()) {
    echo "Record updated successfully";
} else {
    echo "Error updating record: " . $conn->error;
}

$stmt->close();
$conn->close();

Keywords

SQL injection PDO prepared statements data validation error handling

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