code/Debug/Helper/Config.php
public function getExtensionStatus()
    {
        $status = array();

        $extensions = $this->getExtensionRequirements();
        foreach ($extensions as $extension) {
            $status [$extension] = extension_loaded($extension);
        }

        return $status;
    }
public function getExtensionStatus()
    {
        $status = array();

        $extensions = $this->getExtensionRequirements();
        foreach ($extensions as $extension) {
            $status [$extension] = extension_loaded($extension);
        }

        return $status;
    }
Returns enable state for required PHP extensions

@return array