Is it possible to process a CSV file "on the fly" in PHP, line by line, without storing the entire file in memory?

When processing a large CSV file in PHP, it is possible to read and process it line by line without storing the entire file in memory. This can be achieved by using PHP's built-in functions like fopen, fgetcsv, and fclose to open the file, read each line, process it, and then move on to the next line without loading the entire file into memory.

$filename = 'example.csv';

if (($handle = fopen($filename, 'r')) !== false) {
    while (($data = fgetcsv($handle)) !== false) {
        // Process each line of the CSV file here
        // $data is an array containing the values of the current line
        
        // Example: Print the values of the current line
        print_r($data);
    }

    fclose($handle);
} else {
    echo "Error opening file.";
}