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Writing multiple files in a single CURL request

Is it possible to use PHP curl to send multiple files on a single request?

I understand that you can send one file using the following:

$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);

But I want to be able to write, say, 3 files using one request.

Could there be a way to write bytes to the request before curl_exec()?

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2 answers

A complete example would look something like this:

<?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);


?>
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You can use this

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