Do this:

if(!function_exists(\'display_php_error_for_admin\')) {
    function display_php_error_for_admin()
    {
        $user_id = get_current_user_id();
        $user_meta = get_userdata($user_id);
        $roles = $user_meta->roles;
        if(is_array($roles)){
            if (in_array("administrator", $roles)) {
                error_reporting(0);
                @ini_set(\'display_errors\', 0);
            } 
        }elseif ($roles == "administrator"){
            error_reporting(0);
            @ini_set(\'display_errors\', 0);
        }

    }
}
add_action(\'init\',\'display_php_error_for_admin\');