What are common errors in PHP code when creating dropdown lists from MySQL databases?

Common errors when creating dropdown lists from MySQL databases in PHP include not properly connecting to the database, not fetching the data correctly, and not displaying the options in the dropdown list. To solve these issues, ensure that you establish a connection to the database, fetch the data using a query, and then loop through the results to create the dropdown options. 

// Establish a connection to the database
$connection = mysqli_connect('localhost', 'username', 'password', 'database_name');

// Fetch data from the database
$query = "SELECT id, name FROM table_name";
$result = mysqli_query($connection, $query);

// Create the dropdown list
echo "<select name='dropdown'>";
while($row = mysqli_fetch_assoc($result)) {
    echo "<option value='" . $row['id'] . "'>" . $row['name'] . "</option>";
}
echo "</select>";

// Close the database connection
mysqli_close($connection);

Keywords

PHP MySQL dropdown lists errors database connectivity

Related Questions