upload file using fsocketopen

socket_upload.php

<?php
/**
 * php fsockopen上传,如果使用https，必须先开启ssl才能使用
 * @param str $url 要上传的url
 * @param array $files 上传的文件参数 数组格式
 *         array(
 *          0=> array(
 *              "name" => "图片0.jpg", //显示的文件名
 *          "type" => "image/jpeg",  //文件mime
 *      		"savepath" => "D:/www/uploadfile/201305", //文件所在的目录
 *      		"savename" => "images0.jpg" // 真实的文件名
 *              )
 *         )
 * @param array $post 其它的表单 由key =>val 对组成
 * @return url响应的内容
 */
 
function php_upload($url, $files, $post = array()) {
    $str = "";
    $data = "";
	//解析url
    $parse_url = parse_url($url);
    if (!isset($parse_url["scheme"])) {
        $parse_url["scheme"] = "http";
    }
    if (!isset($parse_url["host"])) {
        $parse_url["host"] = "localhost";
    }
    if (!isset($parse_url["port"])) {
        $parse_url["port"] = $parse_url["scheme"] == "https" ? "443" : "80";
    }
    if (!isset($parse_url["query"])) {
        $parse_url["query"] = "";
    } else {
        $parse_url["query"] = "?" . $parse_url["query"];
    }
    $parse_url["protocol"] = $parse_url["scheme"] == "https" ? "ssl://" : "tcp://"; 
 
    $boundary = "---------------------" . substr(md5(rand(0, 32000)), 0, 10);
	
	//拼接header头
    $header = "POST " . $parse_url["path"] . $parse_url["query"] . " HTTP/1.0\r\n";
    $header .= "Host: {$parse_url["host"]}\r\n";
    $header .= "Content-type: multipart/form-data, boundary=$boundary\r\n";
	
	//拼接Post
    foreach ($post AS $index => $value) {
        $data .="--$boundary\r\n";
        $data .= "Content-Disposition: form-data; name=\"" . $index . "\"\r\n";
        $data .= "\r\n" . $value . "\r\n";
        $data .="--$boundary\r\n";
    }
	
	//拼接要上传的文件
    foreach ($files as $k => $file) {
        $content_file = file_get_contents($file['savepath'] . $file['savename']);
        $data .= "--$boundary\r\n";
        $data .="Content-Disposition: form-data; name=\"file_{$k}\"; filename=\"{$file['name']}\"\r\n";
        $data .= "Content-Type: {$file['type']}\r\n\r\n";
        $data .= "" . $content_file . "\r\n";
        $data .="--$boundary--\r\n";
    }
 
    $header .= "Content-length: " . strlen($data) . "\r\n\r\n";
	
	//连接到目标主机，并获取返回结果
    $fp = fsockopen($parse_url["protocol"].$parse_url["host"], $parse_url["port"]);
    stream_set_blocking($fp, true);
    stream_set_timeout($fp, 15);
    $status = stream_get_meta_data($fp);
    @fputs($fp, $header . $data);
    if (!$status['timed_out']) {
        while (!feof($fp)) {
            if (($header = @fgets($fp)) && ($header == "\r\n" || $header == "\n")) {
                break;
            }
        }
        while (!feof($fp)) {
            $str.=fgets($fp, 128);
        }
    }
    fclose($fp);
    return $str;
 
}
 
//使用示例
$file=array(
    0=> array(
        "name" => "图片0.jpg", //显示的文件名
        "type" => "image/jpeg",  //文件mime
		"savepath" => "D:/www/uploadfile/201305", //文件所在的目录
        "savename" => "images0.jpg" // 真实的文件名
    )
    1=> array(
        "name" => "图片1.jpg", //显示的文件名
        "type" => "image/jpeg",  //文件mime
        "savepath" => "D:/www/uploadfile/201305", //文件所在的目录
        "savename" => "images1.jpg" // 真实的文件名
    )
)
 
echo php_upload("http://locahost/upload.php", $file, array("svae_path" => "uploadfile"));