Application of fsockopen function

demo as follows :

//fsockopen() Used to open a socket network connections , Similar to python The following code :
"""
#  initialization socket
client = socket.socket()

#  Link server 
client.connect(('127.0.0.1', 8000))

#  Send information to the server 
client.send(b'this is client')

#  Accept server messages , At most... At one time 1024 Bytes 
recive_msg = client.recv(1024)
"""

$fp = fsockopen("www.baidu.com", 80, $errno, $errstr, 30);
if (!$fp) {
    echo '<pre>';
    echo '*****************************************';
    echo "$errstr ($errno)<br />\n";
    echo '*****************************************';
    echo '</pre>';
} else {
    // Build a response to the browser http Header information 
    $out = "GET / HTTP/1.1\r\n";
    $out .= "Host: baidu.com\r\n";

    $out .= "name:longqiqi\r\n";
    $out .= "Connection: Close\r\n\r\n";

    fwrite($fp, $out);
    echo '<pre>';
    echo '------------------------------------------------';
    while (!feof($fp)) {
        echo fgets($fp, 128);
    }
    echo '------------------------------------------------';
    echo '</pre>';
    fclose($fp);
}

else In structure $out Is to build the response to the browser http Header information format , There can be no shortage of .

Splicing HTTP After header information , hold fsockopen The obtained web page content is given to the browser accordingly

 

demo2

$url = "http://localhost/test/test.php"; #url  Address must be  http://xxxxx
$port = 80;
$t = 30;
$data = array(
    'foo' => 'bar',
    'baz' => 'boom',
    'site' => 'www.manongjc.com',
    'name' => 'nowa magic');

/**fsockopen  Grab page 
 * @parem $url  Web address  host  The host address 
 * @parem $port  URL port   Default 80
 * @parem $t  Script request time   Default 30s
 * @parem $method  Request mode  get/post
 * @parem $data  If the data transmitted separately is  post  The way 
 * @return  Return the requested data 
 * */
function sock_data($url, $port = 80, $t = 30, $method = 'get', $data = null)
{
    $info = parse_url($url);
    $fp = fsockopen($info["host"], $port, $errno, $errstr, $t);

    //  Judge whether there is data 
    if (isset($data) && !empty($data)) {
        $query = http_build_query($data); //  Array rotation url  String form 
    } else {
        $query = null;
    }
    //  If the user's $url "http://www.manongjc.com/";   The lack of   Last backslash 
    if (!isset($info['path']) || empty($info['path'])) {
        $info['path'] = "/index.html";
    }
    //  Judge   Request mode 
    if ($method == 'post') {
        $head = "POST " . $info['path'] . " HTTP/1.0" . PHP_EOL;
    } else {
        $head = "GET " . $info['path'] . "?" . $query . " HTTP/1.0" . PHP_EOL;
    }

    $head .= "Host: " . $info['host'] . PHP_EOL; //  Request host address 
    $head .= "Referer: http://" . $info['host'] . $info['path'] . PHP_EOL;
    if (isset($data) && !empty($data) && ($method == 'post')) {
        $head .= "Content-type: application/x-www-form-urlencoded" . PHP_EOL;
        $head .= "Content-Length: " . strlen(trim($query)) . PHP_EOL;
        $head .= PHP_EOL;
        $head .= trim($query);
    } else {
        $head .= PHP_EOL;
    }
    $write = fputs($fp, $head); // write file ( Safe for binary ). fputs()  The function is  fwrite()  Alias for function 
    while (!feof($fp)) {
        $line = fread($fp, 4096);
        echo $line;
    }
}

//  Function call 
sock_data($url, $port, $t, 'post', $data);