PHP web3 ERC20 token function call

Question

I have a Smart Contract that represent ERC20 token. I already deployed the smart contract on Binance Testnet using HardHat.

I have a deployed Smart Contract address as well.

I have integrated Web3 library in PHP laravel project using following link.

https://github.com/web3p/web3.php

I can call web3 function to get TOKEN Symbol. It is working fine.

I want to transfer my tokens to some wallet address using 'transfer' function of the Smart contract.

I am using following code.

$timeout = 30; // set this time accordingly by default it is 1 sec
$web3 = new Web3(new HttpProvider(new HttpRequestManager('https://data-seed-prebsc-1- s1.binance.org:8545', $timeout)));
$ContractMeta = json_decode(file_get_contents(base_path('public/web3/Token.json')));
$contract = new Contract($web3->provider, $ContractMeta->abi);
$toAccount = 'WALLET_ADDRESS_OF_RECEIVER';
$fromAccount = 'PRIVATE_KEY_OF_SENDER';

$contract->at("DEPLOYED_WALLET_ADDRESS")->send('transfer', $toAccount, 18, [
        'from' => $fromAccount,
        'value' => '1000',
        'gas' => '0x200b20',
        'gasPrice' => '20000000000'
    ], function ($err, $result) use ($contract, $fromAccount, $toAccount) {
        if ($err !== null) {
            throw $err;
        }
        if ($result) {
            echo "\nTransaction has made:) id: " . $result . "\n";
        }
        $transactionId = $result;

        $contract->eth->getTransactionReceipt($transactionId, function ($err, $transaction) use ($fromAccount, $toAccount) {
            if ($err !== null) {
                throw $err;
            }
            if ($transaction) {
                echo "\nTransaction has mind:) block number: " . $transaction->blockNumber . "\nTransaction dump:\n";
                var_dump($transaction);
            }
        });
    });

But I am getting following error.

{
  "message": "Wrong type of eth_sendTransaction method argument 0.",
  "exception": "RuntimeException",
  "file": "/var/www/html/vendor/web3p/web3.php/src/Methods/EthMethod.php",
  "line": 125,
  "trace": [
    {
      "file": "/var/www/html/vendor/web3p/web3.php/src/Eth.php",
      "line": 102,
      "function": "validate",
      "class": "Web3\\Methods\\EthMethod",
      "type": "->"
    },
    {
      "file": "/var/www/html/vendor/web3p/web3.php/src/Contract.php",
      "line": 572,
      "function": "__call",
      "class": "Web3\\Eth",
      "type": "->"
    }
  ]
}

Can someone please guide me on solving this?

Here is the Token.json -> ABI

ABI

Answer 1

this error is telling you that you don't have an object with name = transfer and type = function inside your contract response
it should be something like this :

   {
      "constant": false,
      "inputs": [
        {
          "name": "_to",
          "type": "address"
        },
        {
          "name": "_value",
          "type": "uint256"
        }
      ],
      "name": "transfer",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    }