engelsystem/includes/pages/user_questions.php

<?php

function questions_title()
{
    return _("Ask the Heaven");
}

function user_questions()
{
    global $user;
  
    if (! isset($_REQUEST['action'])) {
        $open_questions = sql_select("SELECT * FROM `Questions` WHERE `AID` IS NULL AND `UID`='" . sql_escape($user['UID']) . "'");
    
        $answered_questions = sql_select("SELECT * FROM `Questions` WHERE NOT `AID` IS NULL AND `UID`='" . sql_escape($user['UID']) . "'");
        foreach ($answered_questions as &$question) {
            $answer_user_source = User($question['AID']);
            $question['answer_user'] = User_Nick_render($answer_user_source);
        }
    
        return Questions_view($open_questions, $answered_questions, page_link_to("user_questions") . '&action=ask');
    } else {
        switch ($_REQUEST['action']) {
      case 'ask':
        $question = strip_request_item_nl('question');
        if ($question != "") {
            $result = sql_query("INSERT INTO `Questions` SET `UID`='" . sql_escape($user['UID']) . "', `Question`='" . sql_escape($question) . "'");
            if ($result === false) {
                engelsystem_error(_("Unable to save question."));
            }
            success(_("You question was saved."));
            redirect(page_link_to("user_questions"));
        } else {
            return page_with_title(questions_title(), [
              error(_("Please enter a question!"), true)
          ]);
        }
        break;
      case 'delete':
        if (isset($_REQUEST['id']) && preg_match("/^[0-9]{1,11}$/", $_REQUEST['id'])) {
            $question_id = $_REQUEST['id'];
        } else {
            return error(_("Incomplete call, missing Question ID."), true);
        }
        
        $question = sql_select("SELECT * FROM `Questions` WHERE `QID`='" . sql_escape($question_id) . "' LIMIT 1");
        if (count($question) > 0 && $question[0]['UID'] == $user['UID']) {
            sql_query("DELETE FROM `Questions` WHERE `QID`='" . sql_escape($question_id) . "' LIMIT 1");
            redirect(page_link_to("user_questions"));
        } else {
            return page_with_title(questions_title(), [
              error(_("No question found."), true)
          ]);
        }
        break;
    }
    }
}