(PECL ssh2 >= 0.10)
ssh2_publickey_remove — Remove an authorized publickey
ssh2_publickey_remove ( resource $pkey , string $algoname , string $blob ) : bool
Removes an authorized publickey.
pkey
Publickey Subsystem Resource
algoname
Publickey algorithm (e.g.): ssh-dss, ssh-rsa
blob
Publickey blob as raw binary data
Returns true
on success or false
on failure.
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.
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https://www.php.net/manual/en/function.ssh2-publickey-remove.php