How to Implement Basic Authentication Correctly in PHP Curl?

Basic Authentication in PHP curl

In PHP curl, you can encounter issues when attempting to utilize basic authentication. This article aims to resolve this problem by providing a detailed explanation and a working PHP code example.

Issue Details

The user encountered difficulties authenticating with basic authorization in PHP curl. Despite using the correct credentials in their command line curl, they received an "authentication parameter in the request are missing or invalid" error when attempting to set the curl header using the following methods:

• Authorization: Basic id:api_key
• Authorization: Basic {id}:{api_key}

Solution

The correct way to set the curl header for basic authentication in PHP is to use the following code:

curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($ch, CURLOPT_USERPWD, "$username:$password");

Code Example

Here's a comprehensive PHP curl example that demonstrates basic authentication:

$username = 'ABC';
$password = 'XYZ';
$URL = '';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $URL);
curl_setopt($ch, CURLOPT_TIMEOUT, 30); // timeout after 30 seconds
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($ch, CURLOPT_USERPWD, "$username:$password");
$result = curl_exec($ch);
$status_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); // get status code
curl_close($ch);

By following these steps and utilizing the provided PHP code example, you should be able to effectively use basic authorization in PHP curl.

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