在单个 CURL 请求中写入多个文件

Question

有没有办法使用 PHP curl 在单个请求中发送多个文件？

我知道您可以使用以下命令发送单个文件：

$fh = fopen("files/" . $title . "/" . $name, "w");
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, trim($url));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_FILE, $fh);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)");
curl_exec($ch);
echo curl_error($ch);
curl_close($ch);

但我希望能够使用单个请求编写 3 个文件。

是否有一种方法可以在 curl_exec() 之前将字节写入请求？

Answer 1

一个完整的例子看起来像这样：

<?php
$xml = "some random data";
$post = array(
     "uploadData"=>"@/Users/whowho/test.txt", 
     "randomData"=>$xml, 
);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, trim("http://someURL/someTHing"));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)");
curl_exec($ch);
echo curl_error($ch);
curl_close($ch);


?>

Answer 2

你可以用这个

$post = array(
     "file1"=>"@/path/to/myfile1.jpg",
     "file2"=>"@/path/to/myfile2.jpg",
);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post); 

Answer 3

我搜索了一种使用curl 发送包含多个文件的post 请求的方法。
但所有代码示例并没有像浏览器那样执行相同的操作。
$_FILES 全局不包含 PHP 记录的常用数组。

现在我找到了原因：缺少 [i] 的偏移量

请参见 http://php.net/manual/de/class.curlfile.php#121971

没有“技巧”，你会在 $ 中得到不同的结果_FILES

[
    'foo_bar' => [
        'name'     => 'path/to/my_file_1.png',
        'type'     => 'application/octet-stream',
        'tmp_name' => '/tmp/phpim24ij',
        'error'    => 0,
        'size'     => 123,
    ],
]

或

[
    'foo_bar_1' => [
        'name'     => 'path/to/my_file_1.png',
        'type'     => 'application/octet-stream',
        'tmp_name' => '/tmp/phpim24ij',
        'error'    => 0,
        'size'     => 123,
    ],
    'foo_bar_2' => [
        'name'     => 'path/to/my_file_1.png',
        'type'     => 'application/octet-stream',
        'tmp_name' => '/tmp/phpim24ij',
        'error'    => 0,
        'size'     => 123,
    ],
]

但这不是我们想要的。

我们想要是通常的$_FILES数组，如下

[
    'foo_bar' => [
        'name'     => [
            0 => 'path/to/my_file_1.png',
            1 => 'path/to/my_file_2.png',
        ],
        'type'     => [
            0 => 'application/octet-stream',
            1 => 'application/octet-stream',
        ],
        'tmp_name' => [
            0 => '/tmp/phpSPAjHW',
            1 => '/tmp/php0fOmK4',
        ],
        'error'    => [
            0 => 0,
            1 => 0,
        ],
        'size'     => [
            0 => 123,
            1 => 234,
        ],
    ],
]

代码：

示例：

$url = "http://api-foo.com/bar/baz";
$uploadFormInputFieldName = 'foo_bar';
$files = [
    'path/to/my_file_1.png',
    'path/to/my_file_2.png',
    // ...
];

$postData = [];
$i = 0;
foreach ($files as $file) {
    if (function_exists('curl_file_create')) {
        $file = curl_file_create($file);
    } else {
        $file = '@' . realpath($file);
    }
    // here is the thing: post data needs to be $posData["foo_bar[0]"], $posData["foo_bar[1]"], ...
    $postData["{$uploadFormInputFieldName}[{$i}]"] = $file;
    $i++;
}

$httpClient = $this->getHttpClient($url); // get your client
$httpClient->setHeader('Content-Type', 'multipart/form-data');
$response = $httpClient->post($postData); // send post request