Public bitcoin node accessible to web code? I want to connect to the bitcoin network and broadcast a transaction.

I can't run my own bitcoin node on localhost because I'm in php on a web server (shared host), is there an internet-accessible open-to-the-public trusted reliable well-known node I can use?

Even blockchain.info api requires a local service to be running, so that won't work.
You can't do that using Bitcoin-core. What you can do as an alternative is using electrum servers.

You can find all the information about using it and commands in here.

Features:


Broadcast transactions.
Getting legacy address transactions, unspent and balance.
Free and public and there are many available peers.
open source (python).


If you want to get segwit address balance, transactions.. you should convert it to script hash first.

Note: using third party APIs &amp; servers are less secure than running a self-hosted full node. It's recommended to avoid third-parties when you deal with money.