How can PHP developers efficiently handle and manipulate data retrieved from a database using PHP functions and regular expressions?

PHP developers can efficiently handle and manipulate data retrieved from a database using PHP functions like `mysqli_fetch_assoc` to fetch data as an associative array. Regular expressions can be used to extract specific patterns or values from the retrieved data. By combining these two techniques, developers can parse and process database data effectively.

// Assume $result contains the data retrieved from the database

while($row = mysqli_fetch_assoc($result)) {
    // Use regular expressions to extract specific patterns from the data
    $pattern = '/[0-9]+/';
    preg_match($pattern, $row['column_name'], $matches);
    
    // Manipulate the extracted data as needed
    $extracted_value = $matches[0];
    
    // Perform further processing or store the manipulated data
    // Example: echo the extracted value
    echo $extracted_value;
}