Consume API with php and cURL - php

Question

Hi I'm trying to consume an API.
I need to add the API key in the header
API endpoint = http://overheid.io/api/kvk
if you want to test things, you can create an account here: https://overheid.io/auth/register
Documentation is in Dutch and can be found here: https://overheid.io/documentatie/kvk
This is what I came up with but do not get passed authentication.
<?php
$service_url = 'https://overheid.io/api/kvk';
$curl = curl_init($service_url);
curl_setopt($curl, CURLOPT_HEADER => true);
curl_setopt($curl, CURLOPT_HTTPHEADER, "ovio-api-key:the_api_key");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$curl_response = curl_exec($curl);
curl_close($curl);
print $curl_response;
?>
Edit: I've replaced the initial code part, with the solutions, but still no success.
Can anyone point me in the right direction?
Thanks!

Answer 1

You can try to use the CURLOPT_USERPWD option to pass the Authentication header. You also seemed to have some syntax errors.
<?php
$service_url = 'https://overheid.io/api/kvk';
$curl = curl_init($service_url);
curl_setopt($curl, CURLOPT_HEADER, true);
curl_setopt($curl, CURLOPT_USERPWD, "ovio-api-key:the_api_key");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$curl_response = curl_exec($curl);
curl_close($curl);
print $curl_response;
But, this API seem to use a custom header...so you can try the following if it the above does not work:
curl_setopt($curl, CURLOPT_HTTPHEADER, array("ovio-api-key: yourkey"));
UPDATE:
I used the following with an account I created on their site:
<?php
$service_url = 'https://overheid.io/api/kvk';
$curl = curl_init($service_url);
curl_setopt($curl, CURLOPT_HEADER, true);
curl_setopt($curl, CURLOPT_HTTPHEADER, array("ovio-api-key: key"));
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$curl_response = curl_exec($curl);
curl_close($curl);
print $curl_response;
This worked for me when I replaced the "key" part with the 64 character key they provide.