CURLFile::__construct

curl_file_create

(PHP 5 >= 5.5.0, PHP 7, PHP 8)

CURLFile::__construct -- curl_file_create — 创建 CURLFile 对象

说明

面向对象风格

public CURLFile::__construct(string $filename, ?string $mime_type = null, ?string $posted_filename = null)

过程化风格

curl_file_create(string $filename, ?string $mime_type = null, ?string $posted_filename = null): CURLFile

创建 CURLFile 对象，用于使用 CURLOPT_POSTFIELDS 选项上传文件。

参数

filename: 被上传文件的路径。
mime_type: 被上传文件的 MIME 类型。
posted_filename: 上传数据里面的文件名。

返回值

返回 CURLFile 对象。

更新日志

版本	说明
8.0.0	`mime_type` 和 `posted_filename` 现在可以为 null；之前它们的默认值是 `0`。

示例

示例 #1 CURLFile::__construct() 示例

面向对象风格

<?php
/* http://example.com/upload.php:
<?php var_dump($_FILES); ?>
*/

// Create a cURL handle
$ch = curl_init('http://example.com/upload.php');

// Create a CURLFile object
$cfile = new CURLFile('cats.jpg','image/jpeg','test_name');

// Assign POST data
$data = array('test_file' => $cfile);
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

// Execute the handle
curl_exec($ch);
?>

过程化风格

<?php
/* http://example.com/upload.php:
<?php var_dump($_FILES); ?>
*/

// Create a cURL handle
$ch = curl_init('http://example.com/upload.php');

// Create a CURLFile object
$cfile = curl_file_create('cats.jpg','image/jpeg','test_name');

// Assign POST data
$data = array('test_file' => $cfile);
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

// Execute the handle
curl_exec($ch);
?>

以上示例会输出：

array(1) {
  ["test_file"]=>
  array(5) {
    ["name"]=>
    string(9) "test_name"
    ["type"]=>
    string(10) "image/jpeg"
    ["tmp_name"]=>
    string(14) "/tmp/phpPC9Kbx"
    ["error"]=>
    int(0)
    ["size"]=>
    int(46334)
  }
}

示例 #2 CURLFile::__construct() 上传多文件示例

面向对象风格

<?php
$request = curl_init('http://www.example.com/upload.php');
curl_setopt($request, CURLOPT_POST, true);
curl_setopt($request, CURLOPT_SAFE_UPLOAD, true);
curl_setopt($request, CURLOPT_POSTFIELDS, [
    'blob[0]' => new CURLFile(realpath('first-file.jpg'), 'image/jpeg'),
    'blob[1]' => new CURLFile(realpath('second-file.txt'), 'text/plain'),
    'blob[2]' => new CURLFile(realpath('third-file.exe'), 'application/octet-stream'),
]);
curl_setopt($request, CURLOPT_RETURNTRANSFER, true);

echo curl_exec($request);

var_dump(curl_getinfo($request));

curl_close($request);

过程化风格

<?php
// procedural
$request = curl_init('http://www.example.com/upload.php');
curl_setopt($request, CURLOPT_POST, true); 
curl_setopt($request, CURLOPT_SAFE_UPLOAD, true);
curl_setopt($request, CURLOPT_POSTFIELDS, [
    'blob[0]' => curl_file_create(realpath('first-file.jpg'), 'image/jpeg'),
    'blob[1]' => curl_file_create(realpath('second-file.txt'), 'text/plain'),
    'blob[2]' => curl_file_create(realpath('third-file.exe'), 'application/octet-stream'),
]);
curl_setopt($request, CURLOPT_RETURNTRANSFER, true);

echo curl_exec($request);

var_dump(curl_getinfo($request));

curl_close($request);

以上示例会输出：

array(26) {
  ["url"]=>
  string(31) "http://www.example.com/upload.php"
  ["content_type"]=>
  string(24) "text/html; charset=UTF-8"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(198)
  ["request_size"]=>
  int(196)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.060062)
  ["namelookup_time"]=>
  float(0.028575)
  ["connect_time"]=>
  float(0.029011)
  ["pretransfer_time"]=>
  float(0.029121)
  ["size_upload"]=>
  float(3230730)
  ["size_download"]=>
  float(811)
  ["speed_download"]=>
  float(13516)
  ["speed_upload"]=>
  float(53845500)
  ["download_content_length"]=>
  float(811)
  ["upload_content_length"]=>
  float(3230730)
  ["starttransfer_time"]=>
  float(0.030355)
  ["redirect_time"]=>
  float(0)
  ["redirect_url"]=>
  string(0) ""
  ["primary_ip"]=>
  string(13) "0.0.0.0"
  ["certinfo"]=>
  array(0) {
  }
  ["primary_port"]=>
  int(80)
  ["local_ip"]=>
  string(12) "0.0.0.0"
  ["local_port"]=>
  int(34856)
}

参见

curl_setopt() - 设置 cURL 传输选项

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用户贡献的备注 2 notes

down

CertaiN ¶

10 years ago

There are "@" issue on multipart POST requests.

Solution for PHP 5.5 or later:
- Enable CURLOPT_SAFE_UPLOAD.
- Use CURLFile instead of "@".

Solution for PHP 5.4 or earlier:
- Build up multipart content body by youself.
- Change "Content-Type" header by yourself.

The following snippet will help you :D

<?php

/**
 * For safe multipart POST request for PHP5.3 ~ PHP 5.4.
 * 
 * @param resource $ch cURL resource
 * @param array $assoc "name => value"
 * @param array $files "name => path"
 * @return bool
 */
function curl_custom_postfields($ch, array $assoc = array(), array $files = array()) {
    
    // invalid characters for "name" and "filename"
    static $disallow = array("\0", "\"", "\r", "\n");
    
    // build normal parameters
    foreach ($assoc as $k => $v) {
        $k = str_replace($disallow, "_", $k);
        $body[] = implode("\r\n", array(
            "Content-Disposition: form-data; name=\"{$k}\"",
            "",
            filter_var($v), 
        ));
    }
    
    // build file parameters
    foreach ($files as $k => $v) {
        switch (true) {
            case false === $v = realpath(filter_var($v)):
            case !is_file($v):
            case !is_readable($v):
                continue; // or return false, throw new InvalidArgumentException
        }
        $data = file_get_contents($v);
        $v = call_user_func("end", explode(DIRECTORY_SEPARATOR, $v));
        $k = str_replace($disallow, "_", $k);
        $v = str_replace($disallow, "_", $v);
        $body[] = implode("\r\n", array(
            "Content-Disposition: form-data; name=\"{$k}\"; filename=\"{$v}\"",
            "Content-Type: application/octet-stream",
            "",
            $data, 
        ));
    }
    
    // generate safe boundary 
    do {
        $boundary = "---------------------" . md5(mt_rand() . microtime());
    } while (preg_grep("/{$boundary}/", $body));
    
    // add boundary for each parameters
    array_walk($body, function (&$part) use ($boundary) {
        $part = "--{$boundary}\r\n{$part}";
    });
    
    // add final boundary
    $body[] = "--{$boundary}--";
    $body[] = "";
    
    // set options
    return @curl_setopt_array($ch, array(
        CURLOPT_POST       => true,
        CURLOPT_POSTFIELDS => implode("\r\n", $body),
        CURLOPT_HTTPHEADER => array(
            "Expect: 100-continue",
            "Content-Type: multipart/form-data; boundary={$boundary}", // change Content-Type
        ),
    ));
}

?>

down

-5

mipa ¶

10 years ago

For PHP < 5.5:

<?php

if (!function_exists('curl_file_create')) {
    function curl_file_create($filename, $mimetype = '', $postname = '') {
        return "@$filename;filename="
            . ($postname ?: basename($filename))
            . ($mimetype ? ";type=$mimetype" : '');
    }
}

?>