How to upload an image to iNaturalist using php cURL? - php

Question

Have been working on posting observation photos to iNaturalist using iNaturalist POST/observation_photos api using php cURL but I am not able to do so. Did some research and found this on github, I tried the code but got error 'status':422.
My code:
<?php
require './init.php';
if ( isset($_POST['submitfile']) )
{
// Make sure there are no upload errors
if ($_FILES['upfile']['error'] > 0)
{
die("Error uploading file...");
}
$token = $_SESSION['access_token'];
$file_path = 'c:\Users\hp\Pictures\New folder';
$suffix = 'image/jpeg';
$photo_name = $_FILES['upfile']['name'];
$inat_id = 'White Magnolia';
$boundary = rand(10,100);
$body = '';
$body .= '--' . $boundary . "\r\n";
$body .= 'Content-Disposition: form-data; name="upfile"; filename=' . basename($file_path) . "\"\r\n";
$body .= 'Content-Type: ' . $suffix . "\r\n\r\n";
$body .=file_get_contents($photo_name) . "\r\n";
$body .= '--' . $boundary . "\r\n";
$body .= 'Content-Disposition: form-data; name="observation_photo[observation_id]"' . "\r\n";
$body .= 'Content-Type: application/json' . "\r\n\r\n";
$body .= json_encode(['observation_id' => $inat_id]) . "\r\n";
$body .= '--' . $boundary . '--' . "\r\n";
$photo_payload = array('observation_photos'=>array(
'method'=>'POST',
'timeout'=>'10',
'headers'=> array(
'Authorization'=>'Bearer'.$token,
'Content-Type'=>'multipart/form-data;'
),
'body' => $body
));
$payload = json_encode($photo_payload);
print_r($payload);
echo "<hr><br>";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.inaturalist.org/v1/observation_photos?access_token=".$token);
//curl_setopt($ch, CURLOPT_URL, "https://api.inaturalist.org/v1/observations?access_token=".$token);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
$result = curl_exec($ch);
curl_close($ch);
// Print the result?
print_r($result);
}
?>
<hr>
<br>
<form action="" method="post" enctype="multipart/form-data">
Select file to upload:
<input type="file" name="upfile">
<input type="submit" value="Upload File" name="submitfile">
</form>
The error that I get while uploading image:

Answer 1

I spot 1 or 2 problems.
$file_path = realpath('white magnolia.jpg'); Shouldn't this be a file path (a location) rather than an actual file name?
Is it possible that your $photo_name('white magnolia.jpg') needs an underscore instead of a space? $photo_name('white_magnolia.jpg')
I'm almost certain item 1 above is your main problem, but I thought I'd point out the possibility that you might need an underscore just in case.