php使用fsockopen函数实现GET/POST提交表单及上传文件

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fsockopen — 打开一个网络连接或者一个Unix套接字连接，

fsockopen()将返回一个文件句柄，之后能被其他文件类函数调用（例如：fgets()，fgetss()，fwrite()，fclose()还有feof()）。如果调用失败，将返回FALSE。

1.GET请求

$host = 'www.aa.com';
$port = 80;
$errno = '';
$errstr = '';
$timeout = 30;
$url = '/socket/getapi.php';
$param = array('name' => 'aa', 'gender' => '1');
$url = $url . '?' . http_build_query($param);  // create connect
$fp = fsockopen($host, $port, $errno, $errstr, $timeout);
if (!$fp) {
    return false;
}
// send request
$out = "GET ${url} HTTP/1.1/r/n";
$out .= "Host: ${host}/r/n";
$out .= "Connection:close/r/n/r/n";
fputs($fp, $out);
// get response
$response = '';
while ($row = fread($fp, 4096)) {
    $response .= $row;
}
fclose($fp);
$pos = strpos($response, "/r/n/r/n");
$response = substr($response, $pos + 4);
echo $response;

getapi.php

$name = $_GET['name'];
$gender = $_GET['gender'];
echo 'name=' . $name . '<br>';
echo 'gender=' . $gender;

2.POST请求

$host = 'www.aa.com';
$port = 80;
$errno = '';
$errstr = '';
$timeout = 30;
$url = '/socket/postapi.php';
$param = array('name' => 'aa', 'gender' => '1', 'photo' => file_get_contents('photo.jpg'));
$data = http_build_query($param);  // create connect
$fp = fsockopen($host, $port, $errno, $errstr, $timeout);
if (!$fp) {
    return false;
}  
// send request
$out = "POST ${url} HTTP/1.1/r/n";
$out .= "Host:${host}/r/n";
$out .= "Content-type:application/x-www-form-urlencoded/r/n";
$out .= "Content-length:" . strlen($data) . "/r/n";
$out .= "Connection:close/r/n/r/n";
$out .= "${data}";
fputs($fp, $out);  
// get response
$response = '';
while ($row = fread($fp, 4096)) {
    $response .= $row;
}
fclose($fp);
$pos = strpos($response, "/r/n/r/n");
$response = substr($response, $pos + 4);
echo $response; 

postapi.php

define('UPLOAD_PATH', dirname(__FILE__) . '/upload');
$name = $_POST['name'];
$gender = $_POST['gender'];
$photo = $_POST['photo'];
$filename = time() . '.jpg';
file_put_contents(UPLOAD_PATH . '/' . $filename, $photo, true);
echo 'name=' . $name . '<br>';
echo 'gender=' . $gender . '<br>';
echo '<img src="upload/' . $filename . '">'; 

3.上传文件

$host = 'www.aa.com';
$port = 80;
$errno = '';
$errstr = '';
$timeout = 30;
$url = '/socket/fileapi.php';
$form_data = array('name' => 'aa', 'gender' => '1',);
$file_data = array(array('name' => 'photo', 'filename' => 'photo.jpg', 'path' => 'photo.jpg'));  
// create connect
$fp = fsockopen($host, $port, $errno, $errstr, $timeout);
if (!$fp) {
    return false;
}  
// send request
srand((double)microtime() * 1000000);
$boundary = "---------------------------" . substr(md5(rand(0, 32000)), 0, 10);
$data = "--$boundary/r/n";  
// form data
foreach ($form_data as $key => $val) {
    $data .= "Content-Disposition: form-data; name=\"".$key." \"/r/n";   $data .= "Content-type:text/plain/r/n/r/n";   $data .= rawurlencode($val) . "/r/n";   $data .= "--$boundary/r/n"; }  
// file data
foreach ($file_data as $file) {
    $data .= "Content-Disposition: form-data; name=\"" . $file['name'] . "\"; filename=\"" . $file['filename'] . "\"/r/n";
    $data .= "Content-Type: " . mime_content_type($file['path']) . "/r/n/r/n";
    $data .= implode("", file($file['path'])) . "/r/n";
    $data .= "--$boundary/r/n";
}
$data .= "--/r/n/r/n";
$out = "POST ${url} HTTP/1.1/r/n";
$out .= "Host:${host}/r/n";
$out .= "Content-type:multipart/form-data; boundary=$boundary/r/n"; 
// multipart/form-data
$out .= "Content-length:" . strlen($data) . "/r/n";
$out .= "Connection:close/r/n/r/n";
$out .= "${data}";
fputs($fp, $out);  
// get response
$response = '';
while ($row = fread($fp, 4096)) {
    $response .= $row;
}
fclose($fp);
$pos = strpos($response, "/r/n/r/n");
$response = substr($response, $pos + 4);
echo $response;

fileapi.php

define('UPLOAD_PATH', dirname(__FILE__) . '/upload');
$name = $_POST['name'];
$gender = $_POST['gender'];
$filename = time() . '.jpg';
echo 'name=' . $name . '<br>';
echo 'gender=' . $gender . '<br>';
if (move_uploaded_file($_FILES['photo']['tmp_name'], UPLOAD_PATH . '/' . $filename)) {
    echo '<img src="upload/' . $filename . '">';

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