How to connect to the Pinterest API using PHP?

[FarrisFahad]

I want to post Pins using Pinterest API. I have tried to generate code using ChatGPT but it returns an error.

Here is my code so far ...

<?php

$clientId = "xxx"; // Replace with your App ID
$clientSecret = "xxx"; // Replace with your App Secret
$redirectUri = "xxx"; // Must match the one used earlier
$authCode = "xxx"; // Paste the code from the URL

// Pinterest API token endpoint
$tokenUrl = "https://api.pinterest.com/v5/oauth/token";

$postFields = [
    'grant_type' => 'authorization_code',
    'code' => $authCode,
    'redirect_uri' => $redirectUri,
    'continuous_refresh' => true
];

$authHeader = base64_encode("$clientId:$clientSecret");

$ch = curl_init($tokenUrl);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postFields));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
   'Content-Type: application/json',
   'Authorization: Basic ' . $authHeader
]);

$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$error = curl_error($ch);
curl_close($ch);

if ($response === false) {
    die("cURL Error: " . htmlspecialchars($error));
}

$data = json_decode($response, true);

// Error handling for HTTP response
if ($httpCode !== 200) {
    die("Pinterest API Error: HTTP $httpCode - " . htmlspecialchars($response));
}

// Error handling for API response
if (!isset($data['access_token'])) {
    die("Error: Invalid response from Pinterest API. Full response: " . json_encode($data, JSON_PRETTY_PRINT));
}

// Successfully received access token
$accessToken = $data['access_token'];
echo "Access Token: " . htmlspecialchars($accessToken);

?>

Here is the error message I am getting ...

Failed to create pin. Response: {"code":2,"message":"Authentication failed.","status":"failure"}

I tried many things but it always return an error.

Here is the docs page: https://developers.pinterest.com/docs/api/v5/oauth-token

Is there something I am missing?

Any help would be appreciated.

[Dani]

Never trust ChatGPT to write fully flushed out code for ya :)

Pinterest uses OAuth to authorize your app on behalf of your app's end-user, if that makes sense. For example, your goal is for your end-user to load up your app, and have access to their Pinterest account. What OAuth does is give your end-user the ability to grant your app permission to access their Pinterest account and modify it on their behalf.

I wrote an OAuth tutorial a little over a decade ago, as the DaniWeb API is also an OAuth-based API, just like Pinterest.

However, I have really horrible brain fog right now, and I'm really struggling to be able to read Pinterest's documentation. I'll try to tackle your question tomorrow afternoon if I'm feeling better. In the meantime, I hope that the tutorial I wrote helps.

Meanwhile, do you have a client ID and client secret set up with Pinterest? If not, you can create one here as that's the first step.

Also, it looks like some other people have already beat you to writing a PHP-based OAuth flow for Pinterest:

• https://github.com/dirkgroenen/pinterest-api-php/blob/master/src/Pinterest/Auth/PinterestOAuth.php
• https://accreditly.io/articles/use-php-to-post-to-the-pinterest-api
• https://www.omi.me/blogs/api-guides/how-to-implement-pinterest-api-to-access-user-boards-in-php

Good luck!

[Dani]

Oh, it looks as if the tutorial was for the old DaniWeb API that no longer exists. The DaniWeb Connect API is also OAuth-based and has some of its own documentation.