AirdropERC1155.sol

pragma solidity ^0.8.0;
//SPDX-License-Identifier: MIT

interface IERC1155 {
    function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;
    function balanceOf(address account) external view returns (uint256);
    function allowance(address owner, address spender) external view returns (uint256);
    function setApprovalForAll(address _operator, bool _approved) external;
}

// todo: implement setApprovalForAll 

 function bulkAirdropERC1155(IERC1155 _token, address[] calldata _to, uint256[] calldata _id, uint256[] calldata _amount) public {
        require(_to.length == _id.length, "Receivers and IDs are different length");
        for(uint256 i=0; i<_to.length; i++){
           _token.safeTransferFrom(msg.sender, _to[i], _id[i], _amount[i], "");
        }
    }
}