Реализация CAPTCHA на PHP

Уровень 0 · материалов: 6

В кластер входят документы, описывающие техническую реализацию различных видов CAPTCHA с использованием PHP, и не входят документы, описывающие общие концепции систем проверки пользователей без привязки к конкретному языку программирования.

Общие признаки: разработка систем CAPTCHA, использование языка PHP, защита от ботов, верификация пользователей

Группа выше: CAPTCHA и защита от ботов

Материалы

• #3022 — Custom CAPTCHA Development Using PHP — Представитель этого кластера

  Разработка CAPTCHA своими руками — Adiost

  Смысл: The main idea is to teach beginner developers how to implement a basic CAPTCHA system using PHP by explaining the theoretical principles of bot-resistance and providing a working code template.

  A beginner-friendly technical guide on building a custom PHP-based CAPTCHA system to prevent bot submissions on websites.

• #31091 — Creating a Mathematical CAPTCHA using PHP and GD

  Матановая капча на PHP — это просто! — grishkaa

  Смысл: The text is a practical tutorial demonstrating how to build a 'math-captcha' by generating random mathematical integrals and rendering them as images in PHP to prevent bot submissions.

  A technical tutorial on creating a mathematical integral-based CAPTCHA using PHP, GD, and the PhpMathPublisher library.

• #18996 — Development of a Custom 3D Captcha in PHP

  Каптча 3d — KAndy

  Смысл: The text describes a developer's decision to create their own 3D captcha in PHP after discovering that a similar existing solution was not open source.

  Frustrated by the lack of open-source 3D captcha code, a developer decides to write their own implementation using PHP.

• #7049 — Secure User Authorization Methods in PHP

  Безопасный метод авторизации на PHP — jiexaspb

  Смысл: The text serves as a basic instructional guide for beginner PHP developers on how to implement secure user authorization using cookies and protecting login forms from brute-force attacks using CAPTCHAs.

  A beginner's guide to PHP authorization focusing on cookie-based methods and the use of CAPTCHAs to prevent brute-force attacks.

• #26354 — Implementing Kana-CAPTCHA using PHP

  Кана-капча на PHP — это просто! — Adiost

  Смысл: The main idea is to demonstrate how to create a CAPTCHA that uses Japanese Katakana characters for visual verification but allows users to solve it using Latin transcription (Romaji), ensuring accessibility for international users through PHP's multi-byte string handling.

  A tutorial on building a PHP-based CAPTCHA using Japanese Katakana characters with a built-in Romaji transcription system for easier user input.

• #24204 — Implementation of a Rebus-Based CAPTCHA in PHP

  Ребус captcha — hlx

  Смысл: The main idea is to present a creative, albeit impractical, alternative to traditional CAPTCHAs by using visual rebus puzzles generated dynamically via PHP to verify human users.

  The author shares a PHP-based project that generates CAPTCHAs as rebus puzzles, replacing word fragments with representative images.