Please let me know if there is a PHP ethereum API or SDK, with the following requirements:

  1. The project must be currently maintained. Don't send a link to a project that has not been updated in 2 years.
  2. I don't want to open any additional ports on my Linux server.
  3. I need to add transactions to the Ropsten Testnet.
  4. There can't be any limits to requests (such as 200 requests per hour), and there can't be a monthly fee.
  5. It must be a stable, proven API or SDK that will not be terminated in the near future.
  • Try Ethereum-PHP. Its not feature complete yet, but sponsored by ConsenSys and constantly worked on. The problem is when you want to WRITE to the blockchain you need to have a Ethereum node with a private key, which I wouldn't recommend. Mar 21 '18 at 0:30

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