How can PHP developers efficiently handle and process downloaded CSV files from a remote server?

To efficiently handle and process downloaded CSV files from a remote server in PHP, developers can use the `file_get_contents()` function to retrieve the file, then parse the CSV data using functions like `str_getcsv()` or `fgetcsv()` to extract and process the data as needed.

// Download the CSV file from the remote server
$csv_data = file_get_contents('http://example.com/data.csv');

// Parse the CSV data
$lines = explode(PHP_EOL, $csv_data);
foreach ($lines as $line) {
    $data = str_getcsv($line);
    
    // Process the CSV data as needed
    // Example: echo the first column value
    echo $data[0] . PHP_EOL;
}