In order to use PHP's cURL functions you need to install the » libcurl package. PHP requires libcurl version 7.10.5 or later. As of PHP 7.3.0, version 7.15.5 or later is required. As of PHP 8.0.0, version 7.29.0 or later is required. As of PHP 8.4.0, version 7.61.0 or later is required.