What are common reasons for the "Error starting up SSH connection" warning in PHP when using the ssh2 extension?

The "Error starting up SSH connection" warning in PHP when using the ssh2 extension commonly occurs due to incorrect server configurations, invalid credentials, or network issues. To solve this issue, ensure that the SSH server is properly configured, check the credentials being used for the connection, and verify that there are no network restrictions preventing the connection. 

$connection = ssh2_connect('example.com', 22);
if (!$connection) {
    die('Unable to establish SSH connection');
}

if (!ssh2_auth_password($connection, 'username', 'password')) {
    die('Authentication failed');
}

// SSH connection successfully established

Keywords

PHP SSH2 extension Error starting up SSH connection Warning Troubleshooting

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