yes, but I didn’t create a wallet anywhere before generating the seed phrase. I generated it using the bip39 library. Then I opened the phantom app, entered the seed phrase and got access to the wallet. It turns out that I got access to an already existing address, and did not create a new one. It turns out by generating a seed phrase, you can access an already existing address(not created by me) that corresponds to the received seed phrase ?

yes, I saw it, thx. But not in mind the ability to generate seed phrase.

is there any documentation for this SDK? For example, how to create a seed phrase or complete a transaction?

sorry, can you give an example code for creating an account using php ?