What are the best practices for handling NULL values in PHP MySQL queries?

Handling NULL values in PHP MySQL queries involves checking for NULL values in the result set and handling them appropriately to avoid unexpected behavior in your application. One common approach is to use the `IS NULL` or `IS NOT NULL` operators in your SQL queries to filter out or handle NULL values accordingly. 

// Example code snippet for handling NULL values in a MySQL query
$query = "SELECT * FROM table WHERE column IS NOT NULL";
$result = mysqli_query($connection, $query);

if (mysqli_num_rows($result) > 0) {
    while ($row = mysqli_fetch_assoc($result)) {
        // Handle non-NULL values
    }
} else {
    // Handle case where no non-NULL values are found
}

Keywords

PHP MySQL NULL values error handling data validation

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