Web3 · hard

38. Calling Blockchain JSON-RPC from Laravel

Interacting with EVM nodes.

Laravel apps interact with blockchains like Ethereum by sending JSON-RPC calls (e.g., eth_getBalance, eth_call) over HTTP to a node provider such as Infura or Alchemy, typically via the Http facade. Requests should include retries, exponential backoff, and timeout handling since node providers can rate-limit or fail transiently. Responses return hex-encoded values that must be decoded (e.g., hexdec or bcmath for large numbers) before use.

Check your understanding

1. How are Ethereum JSON-RPC calls typically made from Laravel?
Via raw sockets onlyVia the Http facade posting JSON to a node endpointVia EloquentVia Blade directives
2. Why must large numeric values from RPC responses be handled carefully?
They're always negativeThey're hex strings representing values too large for native int typesThey're always nullPHP can't parse JSON