How can the use of the seek function in PHP's curl library enhance the efficiency of reading website data?

When reading website data using PHP's curl library, the seek function can enhance efficiency by allowing the script to reset the file pointer to the beginning of the data stream. This is useful when needing to re-read the data multiple times without having to make additional requests to the server.

// Initialize curl session
$ch = curl_init();

// Set the URL to fetch
curl_setopt($ch, CURLOPT_URL, "https://www.example.com");

// Set option to return the transfer as a string
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

// Execute the request
$response = curl_exec($ch);

// Reset the file pointer to the beginning of the data stream
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);

// Close curl session
curl_close($ch);