<?php
/* http://example.com/upload.php:
<?php
var_dump($_FILES);
var_dump(file_get_contents($_FILES['test_string']['tmp_name']));
?>
*/

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

// Create a CURLStringFile object
$cstringfile = new CURLStringFile('test upload contents','test.txt','text/plain');

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

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

   

ENTITY

array(1) {
  ["test_string"]=>
  array(5) {
    ["name"]=>
    string(8) "test.txt"
    ["type"]=>
    string(10) "text/plain"
    ["tmp_name"]=>
    string(14) "/tmp/phpTtaoCz"
    ["error"]=>
    int(0)
    ["size"]=>
    int(20)
  }
}
string(20) "test upload contents"