Upload a Pdf file to another website using cURL - php

Question

Specifically relating to this particular thread Upload a file to a website using php I want to implement this using cURL on PHP.
How do I set this up?
Below is what I have tried.
Note I just edited this by adding the codes I have tried.
<?php
if(isset($_POST["submit"])){
$errors= array();//
$name = $_FILES['fileToUpload']['name'];
$size = $_FILES['fileToUpload']['size'];
$type = $_FILES['fileToUpload']['type'];
$tmp_name = $_FILES['fileToUpload']['tmp_name'];
$upload_ok =1;
$file_ext=strtolower(end(explode('.',$_FILES['fileToUpload']
['name'])));//
$extensions= array("pdf","jpeg","jpg","png");
$jj = file_get_contents($_FILES['fileToUpload']['tmp_name']);
$mj = base64_encode($jj);
if(in_array($file_ext,$extensions)=== false){
$errors[]="vvvvv.";
}
if($size >= xxx){
$errors[]='xxx;'
}
if(empty($errors)==true){
echo "Success </br>";
$request = "xxxxxxxxx";
$headers = array(
"Authorization: Bearer xxxxxx",
"Content-type => multipart/form-data",
"Accept:application/json",
);
$data = [
'voucher_data' => 'base64_encode($tmp_name)',
'callback_url' => 'xxxxxxxxx'
];
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "xxxxxxxxxx",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => $data,
CURLOPT_HTTPHEADER => $headers
));
$response = curl_exec($curl);
curl_close($curl);
var_dump($response);
}else{
print_r($errors);
}
?>
I tried using curl_file_create($mj) as suggested below but on var_dump...it says bool(false)

Answer 1

I see that you want to make a request that uploads a file to another server other than your own.
After PHP 5.5, there is a function named curl_file_create and as the name suggests, it's being used for uploading files.
$post = array (
'extra_info' => '123456', // If required.. like user_id for avatar
'file_contents' => curl_file_create ('path/to/file');
);
$ch = curl_init ($url);
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $post);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
$result=curl_exec ($ch);
curl_close ($ch);
If you don't want to use that then there is a much simple way:
$args = [];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
$args['file'] = '#/path/to/file';
curl_setopt($ch, CURLOPT_POSTFIELDS, $args);
curl_setopt($ch, CURLOPT_SAFE_UPLOAD, false);
curl_close ($ch);

Answer 2

Well after a lot of trying out different methods I passed this value to the post field directly without using it as array
CURLOPT_POSTFIELDS => “foo=$mj&callbackurl=url”,
and it worked. This was where I was stucked. I did it the other way and it didn't work. Each situation is unique. Someone could also need this.