<?php
	
	error_reporting(E_ALL);
	
	set_time_limit(0);
	
	/**
	 * Copy remote file over HTTP one small chunk at a time.
	 *
	 * @param $in_file The full URL to the remote file
	 * @param $out_file The path where to save the file
	 */
	function copyfile_chunked($in_file = null, $out_file = null) {
		$timer_start = microtime(true);
		
		$chunk_size = 10 * (1024 * 1024); # 10 Mb
		
		if(is_null($in_file) || strlen($in_file) <= 0)
			return false;
		
		if(is_null($out_file) || strlen($out_file) <= 0)
			return false;
		
		/**
		 * parse_url breaks a part a URL into it's parts, i.e. host, path,
		 * query string, etc.
		 */
		$parts = parse_url($in_file);
		$i_handle = fsockopen($parts['host'], 80, $errstr, $errcode, 5);
		$o_handle = fopen(str_replace("\\", "/", realpath($out_file)), 'wb');
		
		if($i_handle == false || $o_handle == false)
			return false;
		
		if(!empty($parts['query']))
			$parts['path'] .= '?' . $parts['query'];
		
		/**
		 * Send the request to the server for the file
		 */
		$request = "GET {$parts['path']} HTTP/1.1\r\n";
		$request .= "Host: {$parts['host']}\r\n";
		$request .= "User-Agent: Mozilla/5.0\r\n";
		$request .= "Keep-Alive: 115\r\n";
		$request .= "Connection: keep-alive\r\n\r\n";
		
		fwrite($i_handle, $request);
		
		/**
		 * Now read the headers from the remote server. We'll need
		 * to get the content length.
		 */
		$headers = array();
		
		while(!feof($i_handle)) {
			$line = fgets($i_handle);
			
			if($line == "\r\n") break;
			
			$headers[] = $line;
		}
		
		/**
		 * Look for the Content-Length header, and get the size
		 * of the remote file.
		 */
		$length = 0;
		
		foreach($headers as $header) {
			if (stripos($header, 'Content-Length:') === 0) {
				$length = (int) str_replace('Content-Length: ', '', $header);
				
				break;
			}
		}
		
		/**
		 * Start reading in the remote file, and writing it to the
		 * local file one chunk at a time.
		 */
		$cnt = 0;
		while(!feof($i_handle)) {
			$buf = '';
			
			$buf = fread($i_handle, $chunk_size);
			$bytes = fwrite($o_handle, $buf);
			
			if($bytes == false)
				return false;
			
			$cnt += $bytes;
			
			/**
			 * We're done reading when we've reached the conent length
			 */
			if ($cnt >= $length) break;
		}
		
		fclose($i_handle);
		fclose($o_handle);
		
		$timer_stop = microtime(true);
		
		return (object) array(
			"status" => true,
			"downloaded_byte" => $cnt,
			"request" => (object) array(
				"requested_at" => $timer_start,
				"responded_at" => $timer_stop,
				"elapsed_time" => ($timer_stop - $timer_start)
			),
			"file" => (object) array(
				"location" => str_replace("\\", "/", realpath($out_file)),
				"stat" => @stat(str_replace("\\", "/", realpath($out_file)))
			)
		);
	}
	
	print_r(
		copyfile_chunked("http://tr.wordpress.org/wordpress-3.7.1-tr_TR.zip", "wordpress-3.7.1-tr_TR.zip")
	);
	
	/*
stdClass Object
(
    [status] => 1
    [downloaded_byte] => 5452282
    [request] => stdClass Object
        (
            [requested_at] => 1384871051.4746
            [responded_at] => 1384871066.7435
            [elapsed_time] => 15.268930912018
        )

    [file] => stdClass Object
        (
            [location] => D:/XAMPP/htdocs/calisma.alani/wordpress-3.7.1-tr_TR.zip
            [stat] => Array
                (
                    [0] => 3
                    [1] => 0
                    [2] => 33206
                    [3] => 1
                    [4] => 0
                    [5] => 0
                    [6] => 3
                    [7] => 5452282
                    [8] => 1384870582
                    [9] => 1384871066
                    [10] => 1384870582
                    [11] => -1
                    [12] => -1
                    [dev] => 3
                    [ino] => 0
                    [mode] => 33206
                    [nlink] => 1
                    [uid] => 0
                    [gid] => 0
                    [rdev] => 3
                    [size] => 5452282
                    [atime] => 1384870582
                    [mtime] => 1384871066
                    [ctime] => 1384870582
                    [blksize] => -1
                    [blocks] => -1
                )

        )

)
	*/