使用SOCKET获取网页的内容

使用fsockopen()函数来实现获取页面信息，完整代码如下

//设置字符集（由于要抓取的网易网站字符集编码是gbk编码）
header("content-type:text/html;charset=gb2312");
//设置中国时区
date_default_timezone_set('PRC');

//页面域名
$hostname = "news.163.com";//"www.163.com";
//请求方式
$method = 'GET';
//URI资源唯一标识
$target  = '/17/1225/09/D6G89EED000189FH.html';        // Specific program
//所带参数
$getValues = '';// or $getValues = "?key1=value1&key2=value2";
$port = 80;

$fp = fsockopen($hostname, $port=80, $errno, $errstr, 30);
if (!$fp) {
    echo "####Failed!$errstr ($errno)<br/>
";
} else {
	//注意空格
	$out = "$method $target$getValues HTTP/1.1
"; //原$out = "GET / HTTP/1.1
";
	//$out .= "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
";
	//$out .= "Accept-Encoding: gzip, deflate
";
	//注意冒号后面要有一个空格
	$out .= "Accept-Language: zh-CN,zh;q=0.9
";
	$out .= "User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36
";
    $out .= "Host: $hostname
";
	$out .= "Cache-Control: max-age=0
";
    $out .= "Connection: Close

";
    fwrite($fp, $out);
    while (!feof($fp)) {
        echo fgets($fp, 128);
    }
    fclose($fp);
}

根据以上示例，可以进行通过设置请求头信息，即可实现任意端口的访问

代码执行后效果