SimpleXMLElement 不起作用！檢查 php -v：PHP 7.4.8 (cli) (built: Jul 13 2020 16:45:28) ( NTS )Copyright (c) The PHP GroupZend Engine v3.4.0, Copyright (c) Zend Technologieswith Zend OPcache v7.4.8, Copyright (c), by Zend Technologiesphp -m：php -m[PHP Modules]...SimpleXML..xmlxmlreaderxmlwriterxsl...我使用 PHP 7.2，安裝 php-xml、php-simplexml 等。日志：PHP Fatal error:  Uncaught Error: Class 'SimpleXMLElement' not found in /var/www/html/inc/functions.php:828php： $myCurl = curl_init();  curl_setopt_array($myCurl, array(    CURLOPT_URL => $url,    CURLOPT_RETURNTRANSFER => true,    CURLOPT_POST => true,    CURLOPT_POSTFIELDS => http_build_query(array($body))  ));  $response = curl_exec($myCurl);  curl_close($myCurl);  $robo_response = new SimpleXMLElement($response);