$output = ssh2_exec($sshCon, $sshCommand);

stream_set_blocking($output, true);

echo stream_get_contents($output);

<?php
include('Net/SSH2.php');

$ssh = new Net_SSH2('www.domain.tld');
if (!$ssh->login('username', 'password')) {
    exit('Login Failed');
}

echo $ssh->exec($sshCommand);
?>

$output = ssh2_exec($sshCon, $sshCommand);

stream_set_blocking($output, true);

while($line = fgets($output)) {
    echo $line;
}