SelectBox com option disabled

<?php
    $permissoes  = [
        ['id_permision' => 1, 'name_permission' => 'Administrador'],
        ['id_permision' => 2, 'name_permission' => 'Usuário Comum'],
        ['id_permision' => 3, 'name_permission' => 'Editor'],
    ];

    $userLogged = [
        'id_user'           => 1,
        'user_name'         => 'Luciano Charles',
        'user_id_permision' => 2
    ];
?>

<form method="POST">
    <select name="permissoes">
        <?php foreach($permissoes as $p){?>
            <option
                value="<?php echo $p['id_permision'];?>"
                <?php
                    if ($userLogged['user_id_permision'] == $p['id_permision']){
                            echo 'selected="selected"';
                    }
                    if ($userLogged['user_id_permision'] != $p['id_permision'] && $userLogged['user_id_permision'] != 1){
                        echo 'readonly="readonly" disabled="true"';
                    }
                ?>
            >
                <?php echo $p['name_permission'];?>
            </option>
        <?php } ?>
    </select>
    <input type="submit" value="Enviar">
</form>