PHP-使用CURL将图像文件上载到其他域
我有两个域，例如site1.loc和site2.loc。在site1.loc中，我有一个php表单文件，如下所示：PHP-使用CURL将图像文件上载到其他域,php,file-upload,curl,Php,File Upload,Curl,我有两个域，例如site1.loc和site2.loc。在site1.loc中，我有一个php表单文件，如下所示： <?php $c_name = ""; $c_phone = ""; if($_SERVER['REQUEST_METHOD']=="POST"){ $c_name = $_POST['c_name']; $c_phone = $_POST['c_phone']; $c_pic = $_FILES['c_pic']['name']; // Imag
<?php
$c_name = "";
$c_phone = "";
if($_SERVER['REQUEST_METHOD']=="POST"){
$c_name = $_POST['c_name'];
$c_phone = $_POST['c_phone'];
$c_pic = $_FILES['c_pic']['name']; // Image file
// submit target URL
$url = 'http://site2.loc/handler.php';
$fields = array(
'field1'=>$c_name,
'field2'=>$c_phone,
'field3'=>$c_pic
);
$postvars='';
$sep='';
foreach($fields as $key=>$value)
{
$postvars.= $sep.urlencode($key).'='.urlencode($value);
$sep='&';
}
//open connection
$ch = curl_init();
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS,$postvars);
//execute post
$result = curl_exec($ch);
if(curl_errno($ch)) {
echo 'Error: ' . curl_error($ch);
}
else {
echo $result;
}
//close connection
curl_close($ch);
}
echo '
<form action="" method="post" enctype="multipart/form-data">
Name : <input type="text" name="c_name" value="'.$c_name.'" /> <br />
Phone : <input type="text" name="c_phone" value="'.$c_phone.'" /> <br />
Image : <input type="file" name="c_pic" /> <br />
<input type="submit" />
</form>
';
?>
<?php
ob_start();
if (!isset($_SESSION)) { session_start(); }
// CONNECT TO DB
$db_con = mysql_connect("localhost", "root", "root");// or die("Could not connect to db.");
if(!mysql_select_db("site2",$db_con)) die("No database selected.");
// POST
if(isset($_POST)){
$c_name = $_POST['field1'];
$c_phone = $_POST['field2'];
$c_pic = $_POST['field3'];
// UPLOAD FILE
/* UPLOAD IMAGE CODE HERE */
// INSERT TO DB
if(mysql_query("INSERT INTO kontak (nama, telpon) VALUES ('$c_name','$c_phone')")){
echo "INSERT SUCCESS";
} else {
echo "INSERT FAILED";
}
}
?>
<?php
$c_name = "";
$c_phone = "";
if($_SERVER['REQUEST_METHOD']=="POST"){
$c_name = $_POST['c_name'];
$c_phone = $_POST['c_phone'];
$c_pic = $_FILES['c_pic']['name']; // Image file
// submit target URL
$url = 'http://site2.loc/handler.php';
$fields = array(
'field1'=>$c_name,
'field2'=>$c_phone,
'field3'=>$c_pic
);
$postvars='';
$sep='';
foreach($fields as $key=>$value)
{
$postvars.= $sep.urlencode($key).'='.urlencode($value);
$sep='&';
}
//open connection
$ch = curl_init();
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS,$postvars);
//execute post
$result = curl_exec($ch);
if(curl_errno($ch)) {
echo 'Error: ' . curl_error($ch);
}
else {
echo $result;
}
//close connection
curl_close($ch);
}
echo '
<form action="" method="post" enctype="multipart/form-data">
Name : <input type="text" name="c_name" value="'.$c_name.'" /> <br />
Phone : <input type="text" name="c_phone" value="'.$c_phone.'" /> <br />
Image : <input type="file" name="c_pic" /> <br />
<input type="submit" />
</form>
';
?>
<?php
ob_start();
if (!isset($_SESSION)) { session_start(); }
// CONNECT TO DB
$db_con = mysql_connect("localhost", "root", "root");// or die("Could not connect to db.");
if(!mysql_select_db("site2",$db_con)) die("No database selected.");
// POST
if(isset($_POST)){
$c_name = $_POST['field1'];
$c_phone = $_POST['field2'];
$c_pic = $_POST['field3'];
// UPLOAD FILE
/* UPLOAD IMAGE CODE HERE */
// INSERT TO DB
if(mysql_query("INSERT INTO kontak (nama, telpon) VALUES ('$c_name','$c_phone')")){
echo "INSERT SUCCESS";
} else {
echo "INSERT FAILED";
}
}
?>
CURLOPT_post字段要在HTTP“post”中发布的完整数据
活动若要发布文件，请在文件名前加上@，并使用完整的
路径这可以作为URL编码的字符串传递，如
“para1=va1¶2=val2&…”或作为字段名为key和
字段数据作为值。如果值是数组，则内容类型标头
将设置为多部分/表单数据
代码段：
$postvars['file'] = '@full/path/to/file.jpg';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $postvars);
curl_exec($ch);
您现在这样做的方式将不起作用，因为您的服务器不会将文件发送到远程服务器，而是发送本地文件名（来自用户）。此外，要通过CURL传输文件，需要在名称前添加“@”
$c_pic = '@'. $_FILES['c_pic']['tmp_name']
然后，远程脚本还必须从$\u FILES变量获取文件，并使用move\u uploaded\u file
（）
还有一个提示：在执行此操作之前，请检查$\u文件['c_pic']['error']
，以防止将垃圾上载到远程服务器。此答案中没有代码，只是一个将绕过curl
的工作流示例：
用户将上传文件的表单按照正常方式发布到“站点1”
“站点1”处理表单和上载的文件。该文件放置在可通过web访问的临时目录中
在“站点1”上，检查上传的文件后，制作一个file\u get\u contents（'http://site2.loc/pullfile.php?f=filename&sec=checkcode）
call。phppullfile.php
的内容就是这样做的，将文件从“site1”拉到“site2”
可以检查从“site 2”pullfile.php
返回的file\u get\u contents（）
返回的错误，并在出现错误时进行处理。没有错误，请删除临时文件
&sec=checkcode
可用于确认文件已成功上载到“站点2”。它可能是该文件的MD5或您提出的其他内容// ---- Site 1, formprocess.php ----
// Your form processing goes here, including
// saving the uploaded file to a temp dir.
// Once the uploaded file is checked for errors,
// you need move it to a known temp folder called
// 'tmp'.
// this is the uploaded file name (which you would
// have got from the processed form data in $_FILES
// For this sample code, it is simple hard-coded.
$site1File = 'test.jpg';
$site1FileMd5 = md5_file('./tmp/'.$site1File);
// now make a remote request to "site 2"
$site2Result = file_get_contents('http://'.SITE_2_URL.'/pullfile.php?f='.$site1File.'&md5='.$site1FileMd5);
if ($site2Result == 'done') {
unlink('./tmp/'.$site1File);
} else {
echo '<p>
Uploaded file failed to transfer to '.SITE_2_URL.'
- but will be dealt with later.
</p>';
}
卷曲上传文件
// data fields for POST request
$fields = array("f1"=>"value1", "another_field2"=>"anothervalue");
// files to upload
$filenames = array("/tmp/1.jpg", "/tmp/2.png");;
$files = array();
foreach ($filenames as $f){
$files[$f] = file_get_contents($f);
}
// URL to upload to
$url = "http://example.com/upload";
// curl
$curl = curl_init();
$url_data = http_build_query($data);
$boundary = uniqid();
$delimiter = '-------------' . $boundary;
$post_data = build_data_files($boundary, $fields, $files);
curl_setopt_array($curl, array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
//CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POST => 1,
CURLOPT_POSTFIELDS => $post_data,
CURLOPT_HTTPHEADER => array(
//"Authorization: Bearer $TOKEN",
"Content-Type: multipart/form-data; boundary=" . $delimiter,
"Content-Length: " . strlen($post_data)
),
));
//
$response = curl_exec($curl);
$info = curl_getinfo($curl);
//echo "code: ${info['http_code']}";
//print_r($info['request_header']);
var_dump($response);
$err = curl_error($curl);
echo "error";
var_dump($err);
curl_close($curl);
function build_data_files($boundary, $fields, $files){
$data = '';
$eol = "\r\n";
$delimiter = '-------------' . $boundary;
foreach ($fields as $name => $content) {
$data .= "--" . $delimiter . $eol
. 'Content-Disposition: form-data; name="' . $name . "\"".$eol.$eol
. $content . $eol;
}
foreach ($files as $name => $content) {
$data .= "--" . $delimiter . $eol
. 'Content-Disposition: form-data; name="' . $name . '"; filename="' . $name . '"' . $eol
//. 'Content-Type: image/png'.$eol
. 'Content-Transfer-Encoding: binary'.$eol
;
$data .= $eol;
$data .= $content . $eol;
}
$data .= "--" . $delimiter . "--".$eol;
return $data;
}
为什么要绕过curl？因为它不是必需的，而且有些服务器不包含curl扩展名。问题明确说明了curl的用法，所以我猜Fredy的服务器上有curl。对我和我个人来说，file\u get\u contents（$url）
调用远没有处理curl
以及对其进行post
调用所需的一切复杂。问题是，您必须自己处理超时失败，因为最终请求将失败，图像将无法从site1中删除，而在curl选项中，不存储图像在脚本执行完成后，inbetween PHP将从临时目录中清除文件本身。我已经尝试过，但没有成功。如果你别无选择，我会期待的。