$abi = 'My Abi';
$contract = new Contract('https://data-seed-prebsc-1-s1.binance.org:8545', $abi);
$contractAddress = 'My Contract Adress';
$functionName = 'balance';
$params = 'My Params';
$contract->at($contractAddress)->call($functionName, $params, function($err, $result){
return dd($result);
});