php cURL post send file not working

Question

I'm trying to send a .txt file via php cURL post but no success.

My cURL code looks like this:

$filedata = curl_file_create('../path/to/file.txt', 'text/plain', 'file.txt');

$array = array(
    'action' => 1,
    'file' => $filedata,
    'sec_secure' => $sec_secure,
)

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://domain_name.com/url/to/script.php');
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $array);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SAFE_UPLOAD, true);
$result = curl_exec($ch);
curl_close($ch);

$response = 0;

if($sec_secure == $result){
    $response = 1;
}

And the receiving script.php:

if(isset($_FILES['file'])){
    $contents = file_get_contents($_FILES['file']['tmp_name']);
    $response = $_POST['sec_secure'];
}
else{
    $response = '';
}
echo $response;

The problem is that is always giving me $response = 0.

Does anyone knows why is this happening and how to make it work as it would?

EDIT:

I missed this following line after $array:

$array = http_build_query($array);

Maybe that's causing the issue?

also enctype=”multipart/form-data” needs to be set for file transfers. — RamC
– RamC, Commented Jan 16, 2018 at 8:45
@RamC could you tell me how to set the enctype? And do I need to set CURLOPT_HEADER to true? — molinet
– molinet, Commented Jan 16, 2018 at 8:48
set CURLOPT_HEADER to array("Content-Type:multipart/form-data"); and check — RamC
– RamC, Commented Jan 16, 2018 at 8:52
@RamC on CURLOPT_HEADER or CURLOPT_HTTPHEADER and CURLOPT_HEADER to true? And thanks for your answer! — molinet
– molinet, Commented Jan 16, 2018 at 8:54

RamC · Accepted Answer · 2018-01-16 09:10:19Z

1

You have to set the enctype=”multipart/form-data” for file transfers.

set CURLOPT_HEADER to true

set CURLOPT_HTTPHEADER to array("Content-Type:multipart/form-data");

edited Jan 16, 2018 at 9:10

answered Jan 16, 2018 at 8:56

RamC

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10 Comments

Lawrence Cherone Over a year ago

The following works perfectly without headers: 3v4l.org/E0cHv, try it... it will send the file then print_r the file contents. The OP is essentially doing the same but with 1 instead of the file contents so I dont think its headers.

molinet Over a year ago

Thanks! I'll try it later when I get home

molinet Over a year ago

I just tried your code and still returns value 0. I don't know how to fix this...

molinet Over a year ago

The code is what I have written earlier. I'm starting to think that maybe I don't have to retrieve it as $_FILES but as $_POST. And also I'm not getting any errors on errorlog [both]... And again, thanks for helping me out :)

molinet Over a year ago

I've just edit my code cause I missed one line in the first place but don't know if that's relevant...

|

ChrisF · Accepted Answer · 2018-01-24 09:55:25Z

0

Add Header in curl.

$array = array(
    'action' => 1,
    'file' => $filedata,
    'sec_secure' => $sec_secure,
)
$array = json_encode($array);

$headers = array(

        'Content-Type: application/json',
            'Content-Length: ' . strlen($array)
    );

    $curl = curl_init($url);
    curl_setopt($curl, CURLOPT_POST, 1);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $array);
    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SAFE_UPLOAD, true);
$result = curl_exec($ch);
curl_close($ch);

$response = 0;

if($sec_secure == $result){
    $response = 1;
}

change the code like this.

edited Jan 24, 2018 at 9:55

ChrisF

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answered Jan 16, 2018 at 10:05

Ayoob K

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1 Comment

molinet Over a year ago

Thanks! I'll try it later when I get home!

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