[netcat-na-diary]

Сокеты

<?php
	error_reporting(E_ALL & ~E_NOTICE);
	
	function get_content ($hostname, $path)
	{
		$line = "";
		$fp = fsockopen($hostname, 80, $errno, $errstr, 30);
		if(!$fp) echo "$errstr ($errno)<br />\n";
		else 
		{
			$headers = "GET $path HTTP/1.0\r\n";
			$headers .= "Host: $hostname\r\n";
			$headers .= "Connection: Close\r\n\r\n";
			fwrite($fp, $headers);
			while (!feof($fp))
			{
				$line .= fgets($fp, 1024);
			}
			fclose ($fp);
		}
		return $line;
		}
		
		$hostname = "www.php.net";
		$path = "/";
		//set_time_limit(180);
		$content = get_content ($hostname, $path);
		echo strstr ($content, '>');
?>

Библиотека CURL (Client URL Library)

<?php
	error_reporting(E_ALL & ~E_NOTICE);
	
	$curl = curl_init("http://www.php.net");
	curl_setopt ($curl, CURLOPT_RETURNTRANSFER, 1);
	$content = curl_exec($curl);
	curl_close($curl);
	
	echo $content;
?>

Получение НТТР-заголовков с сервера

<?php
	error_reporting(E_ALL & ~E_NOTICE);
	
	function get_content ($hostname, $path)
	{
		$fp = fsockopen($hostname, 80, $errno, $errstr, 30);
		if(!$fp) echo "$errstr ($errno)<br />\n";
		else 
		{
			$headers = "HEAD $path HTTP/1.1\r\n";
			$headers .= "Host: $hostname\r\n";
			$headers .= "Connection: Close\r\n\r\n";
			fwrite($fp, $headers);
			while (!feof($fp))
			{
				$out[] = fgets($fp, 1024);
			}
			fclose ($fp);
		}
		return $out;
		}
		
		$hostname = "www.php.net";
		$path = "/";
		set_time_limit(180);
		$out = get_content ($hostname, $path);
		echo "<pre>";
		print_r($out);
		echo "</pre>";
?>

Результат

<pre>Array
(
    [0] => HTTP/1.1 200 OK

    [1] => Server: nginx/1.4.4

    [2] => Date: Mon, 27 Jan 2014 11:04:35 GMT

    [3] => Content-Type: text/html; charset=utf-8

    [4] => Connection: close

    [5] => X-Powered-By: PHP/5.5.5-1

    [6] => Last-Modified: Mon, 27 Jan 2014 17:41:01 GMT

    [7] => Content-language: en

    [8] => Set-Cookie: COUNTRY=RUS%2C92.53.98.21; expires=Mon, 03-Feb-2014 11:04:35 GMT; Max-Age=604800; path=/; domain=.php.net

    [9] => Set-Cookie: LAST_NEWS=1390820675; expires=Tue, 27-Jan-2015 11:04:35 GMT; Max-Age=31536000; path=/; domain=.php.net

    [10] => Link: ; rel=shorturl

    [11] => 

    [12] => 
)</pre>

Использование CURL

<?php
	error_reporting(E_ALL & ~E_NOTICE);
	
	function get_content($hostname)
	{
		$curl = curl_init($hostname);
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($curl, CURLOPT_HEADER, 1);
		curl_setopt($curl, CURLOPT_NOBODY, 1);
		$content = curl_exec($curl);
		curl_close($curl);
		
		return explode("\r\n", $content);
	}
	
	$hostname = "http://www.php.net";
	$out = get_content($hostname);
	
	echo "<pre>";
	print_r($out);
	echo "</pre>";
?>

Определение размера файла на удаленном хоcте

<?php
	error_reporting(E_ALL & ~E_NOTICE);
	
	function get_content($hostname)
	{
		$curl = curl_init($hostname);
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($curl, CURLOPT_HEADER, 1);
		curl_setopt($curl, CURLOPT_NOBODY, 1);
		$content = curl_exec($curl);
		curl_close($curl);
		
		return explode("\r\n", $content);
	}
	
	$hostname = "http://www.softtime.ru/files/configs.zip";
	$out = get_content($hostname);
	
	$lines = implode(" ", $out);
	preg_match("|Content-Length:[\s]+([\d]+)|i", $lines, $matches);
	
	echo "Количество байт в архиве - ".$matches[0];
?>