PHP模拟POST上传图片

<?php
class http {
var $method;
var $cookie;
var $post;
var $header;
var $ContentType;
var $errno;
var $errstr; function __construct() {
$this->method = 'GET';
$this->cookie = '';
$this->post = '';
$this->header = '';
$this->errno = 0;
$this->errstr = '';
} function post($url, $data = array(), $referer = '', $limit = 0, $timeout = 30, $block = TRUE) {
$this->method = 'POST';
$this->ContentType = "Content-Type: application/x-www-form-urlencoded\r\n";
if($data) {
$post = '';
foreach($data as $k=>$v) {
$post .= $k.'='.rawurlencode($v).'&';
}
$this->post .= substr($post, 0, -1);
}
return $this->request($url, $referer, $limit, $timeout, $block);
} function get($url, $referer = '', $limit = 0, $timeout = 30, $block = TRUE) {
$this->method = 'GET';
return $this->request($url, $referer, $limit, $timeout, $block);
}

其实就是把图片读进来，跟普通POST一样发送。
注意构建正确的数据。

<?php
$argva =array('username' => 'Jerry', 'password' => '123456');$boundary = "AaB03x";
$encoded = "";
foreach ($argva as $key => $val) {
$encoded .= "--$boundary\r\n";
$encoded .= "Content-Disposition: form-data; name=\"".$key."\"\r\n";
$encoded .= "\r\n".$val."\r\n";
$encoded .= "--$boundary\r\n";
}$encoded .= "--$boundary2--\r\n";
$host='192.168.0.1';
$file='/goods/b.php';$header = "POST $file HTTP/1.1\r\n";
$header .= "Host:$host\r\n";
$header .= "Content-Type: multipart/form-data; boundary=$boundary\r\n";
$header .= "Content-Length: ".strlen($$encoded)."\r\n";
$header .= "Cache-Control: no-cache\r\n";
$header .= "Connection: Close\r\n\r\n";
$header .= $encoded;
$fp = fsockopen($host,'80',$errno,$errstr,30);
if(!$fp)
{
echo "$errstr($errno)\n";
}
else
{
$fpa=fputs($fp,$header);

while(!feof($fp))
{
echo fgets($fp);
}
}
?>b.php文件<?php
echo($_POST['username']."<br>");
?>获取不到POST值,请问那里的问题,请指点,谢谢

$uploaded_file = "test.gif";//请求页面$address=array('street'=>$_POST['street'],'city'=>$_POST['city'],'upfile'=>"@$uploaded_file"; );$ch = curl_init("http://211.151.109.51/work/test1.php");curl_setopt($ch, CURLOPT_VERBOSE, 1);curl_setopt($ch, CURLOPT_HEADER, 0);curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_POSTFIELDS, $address);$ret = curl_exec($ch);curl_close($ch);

<?php
$img_file = 'D:\a.jpg';
$argva =array('username' => 'Jerry', 'password' => '123456');
echo postdata("http://192.168.0.1/goods/b.php",$argva,$img_file);function postdata($posturl,$data=array(),$file=''){
$url = parse_url($posturl);
$boundary = "---------------------------".substr(md5(rand(0,32000)),0,10);
$boundary_2 = "--$boundary";
$content = $encoded = "";
if($data){
while (list($k,$v) = each($data)){
$encoded .= $boundary_2."\r\nContent-Disposition: form-data; name=\"".rawurlencode($k)."\"\r\n\r\n";
$encoded .= rawurlencode($v)."\r\n";
}
}if($file){
$ext=strrchr($file,".");
$type = "image/jpeg";
switch($ext){
case '.gif': $type = "image/gif";
break;
case '.jpg': $type = "image/jpeg";
break;
case '.png': $type = "image/png";
break;
}
$encoded .= $boundary_2."\r\nContent-Disposition: form-data; name=\"imageaaa\"; filename=\"$file\"\r\nContent-Type: $type\r\n\r\n";
$content = join("", file($file));
$encoded.=$content."\r\n";
}$encoded .= "\r\n".$boundary_2."--\r\n\r\n";
$length = strlen($encoded);$fp = fsockopen($url['host'],80);
if(!$fp) return "Failed to open socket to $url[host]";fputs($fp, "POST $url[path] HTTP/1.0\r\n");
fputs($fp, "Host: $url[host]\r\n");
fputs($fp, "Content-type: multipart/form-data; boundary=$boundary\r\n");
fputs($fp, "Content-length: ".$length."\r\n");
fputs($fp, "Connection: close\r\n\r\n");
fputs($fp, $encoded);$line = fgets($fp,1024);
if (!eregi("^HTTP/1\.. 200", $line)) return null;$results = "";
$inheader = 1;
while(!feof($fp)){
$line = fgets($fp,1024);
if($inheader && ($line == "\r\n" || $line == "\r\r\n")){
$inheader = 0;
}elseif(!$inheader){
$results .= $line;
}
}
fclose($fp);
return $results;
}
?>
b.php文件:
<?php
echo($_POST['username']."<br>");$content=$_POST["imageaaa"];
$file_name="byte.jpg";
$fp=fopen($file_name,"w+");
fwrite($fp,$content);
fclose($fp);
?>接收文字值正常,但图片不正常,是什么原因

调试易

PHP模拟POST上传图片

解决方案 »