How to Implement HTTP Basic Authentication in PHP using cURL?

HTTP Basic Authentication with PHP curl

When building HTTP RESTful service clients using PHP and curl, authentication becomes a critical aspect. To facilitate secure communication, one commonly employed method is HTTP Basic Authentication.

Making Authenticated Requests with curl

curl provides a straightforward way to add HTTP Basic Authentication to requests. Here's how:

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

represents the curl handle, while $username and $password are the credentials for the authentication. This option sets the authorization header in the request.

Additional Notes

While you can set headers manually, it's not necessary when using HTTP Basic Authentication. The CURLOPT_USERPWD option automatically generates and includes the required headers in the request.

Sample Request

A complete example of making an authenticated request with curl:

$ch = curl_init($host);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/xml'));
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_USERPWD, $username . ":" . $password);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $payloadName);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$return = curl_exec($ch);
curl_close($ch);

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