Rest API执行时给出错误

Am trying to add products using a rest API provided by woo commerce but it gives me the below error.

Fatal error: Uncaught exception 'Exception' with message 'WooCommerce REST API client requires the cURL PHP extension.' in C:\Apache24\htdocs\WooCommerce-REST-API-Client-Library-master\lib\woocommerce-api\class-wc-api-client.php:86 Stack trace: #0 C:\Apache24\htdocs\WooCommerce-REST-API-Client-Library-master\example\example.php(11): WC_API_Client->__construct('http://www.woot...', 'ck_xxxxxxx...', 'cs_xxxxxxx...', Array) #1 {main} thrown in C:\Apache24\htdocs\WooCommerce-REST-API-Client-Library-master\lib\woocommerce-api\class-wc-api-client.php on line 86

require_once( 'C:/Apache24/htdocs/WooCommerce-REST-API-Client-Library-master/lib/woocommerce-api.php' );

$options = array(
'ssl_verify'      => false,
);

try {

    $client = new WC_API_Client( 'http://www.example.com/demo/wpinsttalledlocation', 'ck_xxxxxxxxxxxxxxxxxxxxxx', 'cs_xxxxxxxxxxxxxxxxxxxxxxxxxx', $options );


    } catch ( WC_API_Client_Exception $e ) {

    echo $e->getMessage() . PHP_EOL;
    echo $e->getCode() . PHP_EOL;

    if ( $e instanceof WC_API_Client_HTTP_Exception ) {

        print_r( $e->get_request() );
        print_r( $e->get_response() );
    }
}

You need install php-curl.

sudo apt-get install php5.6-curl (or your version php)

and then, restart apache.

sudo service apache2 restart