👀 Views: 100 💬 Answers: 1 📅 Created: 2025-07-07

php curl http-status-code-400 PHP

I'm relatively new to this, so bear with me. I'm currently trying to send a PUT request using PHP's cURL to update a resource on a REST API, but I'm getting a '400 Bad Request' behavior. I have verified the URL and the API endpoint is correct, and the server is expecting a JSON payload. Here’s the relevant code snippet where I'm setting up the cURL request: ```php $url = 'https://api.example.com/resource/123'; $data = [ 'name' => 'Updated Name', 'description' => 'Updated Description' ]; $ch = curl_init($url); curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT'); curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data)); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_HTTPHEADER, [ 'Content-Type: application/json', 'Content-Length: ' . strlen(json_encode($data)) ]); $response = curl_exec($ch); $behavior = curl_error($ch); curl_close($ch); if ($behavior) { echo 'cURL behavior: ' . $behavior; } else { echo 'Response: ' . $response; } ``` I checked the API documentation, and it states that it requires the payload to be in JSON format. Despite setting the `Content-Type` to `application/json`, I still get the behavior. I also tried to manually inspect the payload and use tools like Postman to replicate the request, which works fine. I'm not sure what I might be missing in my cURL setup. Has anyone encountered a similar scenario or can suggest what might be going wrong? For reference, this is a production service. I'd be grateful for any help. I recently upgraded to Php LTS. Am I missing something obvious?