Download files in PHP on the server

download.php

<?php	
function stream_notification_callback($notification_code, $severity, $message, $message_code, $bytes_transferred, $bytes_max) {

		static $filesize = null;

		switch ($notification_code) {
			case STREAM_NOTIFY_RESOLVE:
			case STREAM_NOTIFY_AUTH_REQUIRED:
			case STREAM_NOTIFY_COMPLETED:
			case STREAM_NOTIFY_FAILURE:
			case STREAM_NOTIFY_AUTH_RESULT:
				/* Ignore */
				printf("Current status: %s \n and size : %d kb", $message, $bytes_transferred/1024);
				break;

			case STREAM_NOTIFY_REDIRECTED:
				echo "Being redirected to: ", $message, "\n";
				break;

			case STREAM_NOTIFY_CONNECT:
				echo "Connected...\n";
				break;

			case STREAM_NOTIFY_FILE_SIZE_IS:
				$filesize = abs($bytes_max);
				echo "Filesize: ", $filesize, "\n";
				break;

			case STREAM_NOTIFY_MIME_TYPE_IS:
				echo "Mime-type: ", $message, "\n";
				break;
			case STREAM_NOTIFY_PROGRESS:
				if ($bytes_transferred > 0 ) {
				// if ($bytes_transferred > 0 && $filesize >= 8192) {
					// $bytes_transferred += 8192;
					if (!isset($filesize)) {
						printf("\rUnknown filesize.. %2d kb done..", $bytes_transferred/1024);
					} else {
						$length = (int)(($bytes_transferred/$filesize)*100);
						// if (!$length || $length < 1){
						// 	printf("\rUnknown filesize.. %2d kb done..", $bytes_transferred/1024);	
						// }else{

							printf("\r[%-100s] %d%% (%2d/%2d kb)", str_repeat("=", $length). ">", $length, ($bytes_transferred/1024), $filesize/1024);
						// }
					}
				}
				break;
			}
			ob_flush();
}
function downloadFile($path, $fileName = null){
		if (empty($fileName)){
			$fileName = sys_get_temp_dir().'/'.static::getFileNameFromUrl($path);
		}
		$ctx = stream_context_create();
		stream_context_set_params($ctx, array("notification" =>  "stream_notification_callback"));
		$fin = fopen($path, "rb", false, $ctx);
		$fout = fopen($fileName, 'w');
		$buffer_size = 4096;
		// file_put_contents($fileName, $fp);
		while(!feof($fin)){
			$data = fread($fin, $buffer_size);
			fwrite($fout, $data, strlen($data));
		}
		fclose($fin);
		fclose($fout);
}
function getFileNameFromUrl($url){
		$name = "";
		$path = parse_url($url, PHP_URL_PATH);
		$pathInfo = pathinfo($path);
		$name .= $pathInfo['filename'];
		if (isset($pathInfo['extension']) && !empty($pathInfo['extension']) ){
			$name .= ".".$pathInfo['extension'];
		}
		return $name;
	}