php-binance-api.php
public function withdrawFee(string $asset)
    {
        $params = [
            "wapi" => true,
        ];

        $response = $this->httpRequest("v3/assetDetail.html", "GET", $params, true);

        if (isset($response['success'], $response['assetDetail'], $response['assetDetail'][$asset]) && $response['success']) {
            return $response['assetDetail'][$asset];
        }
    }
public function withdrawFee(string $asset)
    {
        $params = [
            "wapi" => true,
        ];

        $response = $this->httpRequest("v3/assetDetail.html", "GET", $params, true);

        if (isset($response['success'], $response['assetDetail'], $response['assetDetail'][$asset]) && $response['success']) {
            return $response['assetDetail'][$asset];
        }
    }
public function withdrawFee ( string $ asset ) { $ params = [ "wapi" => true , ] ; $ response = $ this -> httpRequest ( "v3/assetDetail.html" , "GET" , $ params , true ) ; if ( isset ( $ response [ 'success' ] , $ response [ 'assetDetail' ] , $ response [ 'assetDetail' ] [ $ asset ] ) && $ response [ 'success' ] ) { return $ response [ 'assetDetail' ] [ $ asset ] ; } }
withdrawFee get the withdrawal fee for an asset

$withdrawFee = $api->withdrawFee( "BTC" );

@param $asset string currency such as BTC
@return array with error message or array containing withdrawFee
@throws \Exception
withdrawFee get the withdrawal fee for an asset