$file = "/var/log/messages"; // Open the file using file descriptor $fd = fopen($file, "r"); // Use the file descriptor to read data from the file $data = fread($fd, 1024); // Close the file descriptor fclose($fd);
// Open a file descriptor $fd = fopen("/var/log/messages", "r"); // Check if the file descriptor is valid if(is_resource($fd)){ // File descriptor is valid echo "Valid file descriptor\n"; } else { // File descriptor is invalid echo "Invalid file descriptor\n"; } // Close the file descriptor fclose($fd);The PHP FD access extension is included in the PHP standard library, which means no specific package needs to be installed. It is enabled by default in most PHP installations.