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<ssh2_publickey_addssh2_publickey_list>
^SSH2 FunctionsLast updated: Mon, 26 Oct 2026

ssh2_publickey_init

(PECL ssh2 >= 0.10)

ssh2_publickey_init — Initialize Publickey subsystem

Description

function ssh2_publickey_init(resource $session): resource|false

Request the Publickey subsystem from an already connected SSH2 server.

The publickey subsystem allows an already connected and authenticated client to manage the list of authorized public keys stored on the target server in an implementation agnostic manner. If the remote server does not support the publickey subsystem, the ssh2_publickey_init() function will return false.

Parameters

session

Return Values

Returns an SSH2 Publickey Subsystem resource for use with all other ssh2_publickey_*() methods or false on failure.

Notes

Note:

The public key subsystem is used for managing public keys on a server to which the client is already authenticated. To authenticate to a remote system using public key authentication, use the ssh2_auth_pubkey_file() function instead.

See Also


<ssh2_publickey_addssh2_publickey_list>
^SSH2 FunctionsLast updated: Mon, 26 Oct 2026