Bluemix PHP Watson Personality Insights Service - php

Question

What is the error in the code below? It returns this error:
{ "error":"Internal server error (root cause: multipart\/form-data; boundary=----------------------------248f475465f9)",
"code":404 }
Code:
<?php
function testLangID($data) {
$curl = curl_init();
$headers_arr = array(
"contentItems" => array(
"userid" => "dummyuserid",
"id" => "dummyid",
"sourceid" => "freetext",
"contenttype" => "application/json",
"language" => "en",
"content" => $data
)
);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $headers_arr);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($curl, CURLOPT_USERPWD, "........:........");
curl_setopt($curl, CURLOPT_URL, "https://gateway.watsonplatform.net/personality-insights/api");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($curl);
curl_close($curl);
$decoded = json_decode($result, true);
return $result;
}
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$res= testLangID( $_POST["textLID"] );
echo $res;
}
?>

Answer 1

The url you are using:
curl_setopt($curl, CURLOPT_URL, "https://gateway.watsonplatform.net/personality-insights/api");
should be:
curl_setopt($curl, CURLOPT_URL, "https://gateway.watsonplatform.net/personality-insights/api/v2/profile");
I saw you are using contentItems, you can also sent content-type: text/plain and the text in the body no need to build the JSON object.
The curl command to send text in the body is:
curl -X POST -u USERNAME:PASSWORD \
-H "Content-Type: text/plain" \
-d "Text to analyze" \
"https://gateway.watsonplatform.net/personality-insights/api/v2/profile"

Answer 2

I answered this in dwAnswers earlier this morning.
You only need the "body" parameter in the POST request (and "headers" if not using default value). As described in the API documentation the other parameters are part of the HTTP HEADER request.
Here is the PHP code modified to work with Watson Personality Insights:
$curl = curl_init();
$post_args = array(
'body' => $data
);
$header_args = array(
'Content-Type: text/plain',
'Accept: application/json'
);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post_args);
curl_setopt($curl, CURLOPT_HTTPHEADER, $header_args);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($curl, CURLOPT_USERPWD,<user id>:<password>");
curl_setopt($curl, CURLOPT_URL, "https://gateway.watsonplatform.net/personality-insights/api/v2/profile");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($curl);
curl_close($curl);
$decoded = json_decode($result, true);