Ethereum

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Questions regarding the use of the PHP scripting language with Ethereum.

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3 views

I cant connetc geth in docker container from other container using docker name

I have docker-composer setup: Php and Geth. I can ping from php docker container to geth cont. but I cant get response from it. If I hard code ip address of this geth container, I get response if I ...
2
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0answers
15 views

ethereum-php library SmartContract balanceOf always returns 0

I am trying to check balance of some USDT token using ethereum-php library but it always return 0. Here is the code, $contractMeta = json_decode('[{"constant":true,"inputs":[],"name":"name","...
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1answer
38 views

Infura getLogs returns an empty result

I'm writing a crypto based system with PHP on Infura, and now I am coding a script to retrieve logs for a specific address. This is my code: $ch = curl_init($my_server_url); $data = array( '...
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1answer
22 views

Automate token distribution?

How can I execute a function on a smart contract from a web-app backend? (Laravel / PHP) My smart contracts holds X tokens. In my MySQL database, users are owed X tokens. I have their wallet ...
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1answer
19 views

What are the minimum requirements for Geth server only for API calls?

I want to run a platform based on Ethereum and PHP to let our customers to sell/buy Ethereum based currencies online, and we have not any plan to mine the blockchain. In this regard, please help me to ...
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0answers
60 views

Geth web3.eth.contract returns null

I understand that the way I'm doing this is a bit backwards, but I cannot install node.js onto our server, and we are using a PHP backend which doesn't have very good Ethereum support. I am trying to ...
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2answers
36 views

Testrpc on ubuntu

I have a .php website on my ubuntu virtual machine. I want to start the testrpc in this machine, so I can interract with my smartcontract with this web interface. Is this possible?
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1answer
38 views

Sending ETH or Tokens from the command line to be integrated in a PHP script

I'm relatively new to using ETH on the command line. Do I use Geth or Parity? All I want to do is be able to send some ETH or Tokens from my eth private key. Which way is the best way to do it? I plan ...
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37 views

Etherscan apikey error in laravel

Etherscan apikey returns an error This is my code: namespace App\Http\Controllers; use Illuminate\Http\Request; use App\Models\AdminSettings; use App\Models\User; use Auth; define('APIURL', 'http:/...
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1answer
58 views

Initiate transaction from server to smart contract

In my case, i have an API written in PHP which periodically checks the database. If certain condition was met, i need to send an alert message from the API to an account/node in the Ethereum ...
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0answers
299 views

Ethereum Transaction Using cUrl and web3.php, I get a Receipt but the Transaction is not sent to the Network

This has been doing my head in all day, after wading through and managing to get all my values converted to hex I create and sign the ethereum transaction using the web3p/ethereum-tx library from ...
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1answer
106 views

My web3.php installation question

How can I install web3.php? Can I use shared hosting to run it or I must use vps, if I use vps I must use root to install web3.php? Thanks.
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0answers
679 views

Unable to locate package php5.6-mbstring [closed]

root@iZwz98r5jfsgx41dfymo6iZ:/usr/local/lib# sudo apt-get install php5.6-mbstring Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package ...
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1answer
441 views

Invalid sender when sending Raw Transaction, signed w/ ethereum-tx on PHP

I am using PHP and ethereum-tx library https://github.com/web3p/ethereum-tx to sign transactions but when trying to send them to the node I got an "invalid sender" error. Besides, exactly the same ...
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0answers
51 views

Ethereum js wallet for php

https://github.com/ethereumjs/ethereumjs-wallet I need this library with the same functions in PHP Would u give me the link
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1answer
85 views

how to pass value to contract via php (no java script)?

I wrote a contract that get a unit and do something My question : How to pass a value to this contract function via PHP? (not js,py,MetaMask, ... . just in php) For example, I use this and install ...
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1answer
144 views

How do I check the Ethereum balance and unique transactions count of a Smart Contract over a period of time?

Basically I want to be able to track smart contracts balance and unique transactions over a period of time such as , last 24hours, last hour and so. What would be the best approach into doing this? ...
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1answer
71 views

Unable to Generate Address Endpoint Blockcypher

I am trying to generate an address using Blockcyphers Address Endpoint using cUrl. - https://api.blockcypher.com/v1/eth/main/addrs?token=eth But it returns this error - "Endpoint not found. Please ...
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1answer
88 views

getting result of a method of smart contract that don't change any state variables

I know in ethereum if a method of smart contract don't change state variables we can see it's result without making any transaction. now I want to know how can see result of this method ...
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0answers
191 views

Recovered Sender Address from Raw Transaction

I'm trying this code example : https://thomasclowes.com/verifying-an-ethereum-signature-on-the-server-php-2/ Expected $recoveredSenderAddress = 0xd5bfc359c3a377bb8afd41db8ffc8d1349718233 Actual $...
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1answer
334 views

generating raw trx and sending it to the network shows “invalid sender” error

I'm trying to make an ethereum raw transaction by php and these libraries: https://github.com/simplito/elliptic-php https://github.com/kornrunner/php-keccak https://github.com/web3p/rlp this is my ...
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0answers
107 views

Any easy php script to sign and send transactions maybe run contract also

Thanks I have JavaScript version but not php version especially for sign and send transaction
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2answers
1k views

How to fetch ETH/USD price from the coinmarketcap api

I want to fetch the current ETH-USD price from this api (https://api.coinmarketcap.com/v1/ticker/ethereum/?convert=USD). How do I fetch just the price into a variable in PHP for reuse on my ...
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0answers
631 views

How to transfer tokens from smart contract using PHP?

I want to transfer tokens using PHP script and that script will be executed using cronjob, is there library available to transfer by unlocking account using private key?
0
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1answer
112 views

Ethereum-PHP How to receive outbound parameters from smart contract function

In contract sol file I have function definition: function product(uint32 _prdId) public view returns (uint32 prdId, string prdName, address prd, uint closeTime, uint promoTime,uint8 bonus, ...
2
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1answer
523 views

Ethereum-PHP Calling contract function with parameter

I'm not the author of Ethereum part but have to connect to using php. Choosen Ethereum-PHP package (https://github.com/digitaldonkey/ethereum-php). Have connection to ethereum and smart contract but ...
3
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1answer
608 views

Ethereum address genеration and keccаk256

I'm trying to generate eth address on PHP. Having issue with keccak256. I'm using this class: https://github.com/kornrunner/php-keccak It works good, I checked many times on https://emn178.github.io/...
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2answers
407 views

How to make an action to send record to my database?

I want all transaction of the tokens send to my database through smart contract. For example, A send 10Token to B, it will show on blockchain, but I also want a function which smart contract will let ...
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1answer
589 views

Failed RLPx handshake

I am trying to use https://github.com/kesar/ethereum-php on the back-end of my web site. I followed a tutorial http://iotbl.blogspot.ca/2017/03/setting-up-private-ethereum-testnet.html to set up two ...
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1answer
196 views

Dapp fundamental q about listening solidity events

Sol: I created contract with events that are raised when is called some function. Html fo: Those functions are called via web3.js with abi and address - easy. Backend (no js) asp or php: I am not ...
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2answers
3k views

How to transfer ETH between two addresses using geth and json rpc

I have geth running on my server. I am building a php website which act as wallet. Now iam able to create addresses. I need to be able to deposit and withdraw ETH between addresses on same node. I ...
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1answer
862 views

Interact with MetaMask via PHP

I can easily interact with metamask via web3 js like this (JS): web3 = new Web3(web3.currentProvider); Is it possible to interact with metamask via php? For example (PHP): $ethereum = new Ethereum('...
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2answers
541 views

Why doesn't my verification of a signed message signature work in PHP?

I am attempting to verify a signed message in PHP. To be clear, I am not looking to interface with JSON-RPC or any external service, which I both a) know works and b) successfully verifies the ...
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1answer
277 views

Automating Listing Addresses and Balances Using PHP

I want to incorporate a javascript in php that list all the accounts and shows balances for those. This is my script for that: <script language="javascript"> function checkAllBalances() { var ...
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1answer
2k views

Generate Ethereum address in PHP?

I am working on a web application where I need to generate Ethereum addresses in PHP, how do i go about generating a random Ethereum public/private key pair in PHP? thanks.
0
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1answer
1k views

Is there a way to read data from smart contract using PHP?

I have a smart contract. All what I need is to make a PHP script that will get some public data from smart contract using it's address. How can I do that? Maybe there is some libraries?
2
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1answer
2k views

Generate Ethereum address from a private key

My question was first asked on stackoverflow but due lack of privileges I couldn't move it here directly. I am trying to generate an Ethereum address based on a given private key following this "How ...
2
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2answers
1k views

web3 js eth.contract equivalent in PHP

var Web3 = require('web3'); var web3 = new Web3(); web3.setProvider(new web3.providers.HttpProvider("http://blahblah.com:8545")); var token = web3.eth.contract(ABI).at("x0x_contract_address") How ...
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0answers
343 views

Can't connect to RPC on php server

I am using php to connect RPC server. In localhost, everything works fine. I moved my files to host to test and I realised that $geth->Method_Name() is not working. If I print_r($geth), here is the ...
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0answers
59 views

I want to create a local exchange site how to add ethereum? [closed]

like a said I want to build an exchange site how can I add ethereum on it?
7
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3answers
6k views

web3 js php implementation

Is there any way to communicate with ethereum through php ? what i want is to get Smart contract details from contract address like Contract token name, decimal, abi, balance, tokens supply symbols ...
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1answer
1k views

Save hash data with KECCAK-256 then reverse the process in PHP

I am saving data hashed with keccak-256 in Solidity and I am trying read that data with PHP, but cant seem to find any good solutions. I can get PHP to read off the data but I cant arrive at the same ...
2
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2answers
2k views

transactions through a php website [closed]

how I use to users to send ethereum transactions through a php website?My server is Apache. Is the Ethereum JavaScript API useful to doing this? Thank you!
0
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2answers
417 views

PHP and wordpress

i am WordPress and php developer. i am working on the plugin development for ethereum. i does't find the sdk or api for the php or JavaScript. can you please guide me for the API documentation for the ...
5
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1answer
4k views

How to generate Ethereum address in PHP?

I am working on a web application where I need to generate Ethereum addresses in PHP, how do i go about generating a random Ethereum public/private key pair in PHP? thanks.
4
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1answer
637 views

How to send an ETH address from a webpage to a smart contract?

What's the best way to get an ETH address from a website form submission (php) passed to a smart contract in order that the smart contract can send some new minted Tokens to the ETH address collected ...
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0answers
613 views

Calling an Ethereum contract function from PHP [duplicate]

How can I call a contract function from PHP and print the return? Is there any good PHP libraries for that? thanks.
9
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1answer
14k views

PHP Library for Ethereum

I am looking for a PHP library to interact with Ethereum. Are there any active open source projects of PHP libraries for Ethereum available? Thanks for your help
5
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1answer
3k views

Accepting and sending API for Ethereum

Is there any good API for accepting and sending Ethereum like blocktrail for bitcoin ? Why is working with Ethereum so complicated?
1
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1answer
2k views

Find out latest block hash in Ethereum using JSON-RPC

I am developing an ethereum block explorer in PHP and have established an JSON-RPC communication with my server geth node successfully. Nevertheless, I am kind of stuck when trying to find out the ...

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