https://github.com/foo123/simple-captcha
Simple, image-based, mathematical captcha, with increasing levels of difficulty for PHP, JavaScript, Python
https://github.com/foo123/simple-captcha
captcha javascript php python
Last synced: 8 months ago
JSON representation
Simple, image-based, mathematical captcha, with increasing levels of difficulty for PHP, JavaScript, Python
- Host: GitHub
- URL: https://github.com/foo123/simple-captcha
- Owner: foo123
- Created: 2022-07-30T07:48:01.000Z (over 3 years ago)
- Default Branch: master
- Last Pushed: 2023-01-22T15:20:06.000Z (about 3 years ago)
- Last Synced: 2025-03-24T14:51:23.656Z (12 months ago)
- Topics: captcha, javascript, php, python
- Language: HTML
- Homepage:
- Size: 169 KB
- Stars: 8
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# simple-captcha
Simple, image-based, mathematical captcha, with increasing levels of difficulty for PHP, JavaScript, Python
version **2.6.0**
**see also:**
* [ModelView](https://github.com/foo123/modelview.js) a simple, fast, powerful and flexible MVVM framework for JavaScript
* [tico](https://github.com/foo123/tico) a tiny, super-simple MVC framework for PHP
* [LoginManager](https://github.com/foo123/LoginManager) a simple, barebones agnostic login manager for PHP, JavaScript, Python
* [SimpleCaptcha](https://github.com/foo123/simple-captcha) a simple, image-based, mathematical captcha with increasing levels of difficulty for PHP, JavaScript, Python
* [Dromeo](https://github.com/foo123/Dromeo) a flexible, and powerful agnostic router for PHP, JavaScript, Python
* [PublishSubscribe](https://github.com/foo123/PublishSubscribe) a simple and flexible publish-subscribe pattern implementation for PHP, JavaScript, Python
* [Importer](https://github.com/foo123/Importer) simple class & dependency manager and loader for PHP, JavaScript, Python
* [Contemplate](https://github.com/foo123/Contemplate) a fast and versatile isomorphic template engine for PHP, JavaScript, Python
* [HtmlWidget](https://github.com/foo123/HtmlWidget) html widgets, made as simple as possible, both client and server, both desktop and mobile, can be used as (template) plugins and/or standalone for PHP, JavaScript, Python (can be used as [plugins for Contemplate](https://github.com/foo123/Contemplate/blob/master/src/js/plugins/plugins.txt))
* [Paginator](https://github.com/foo123/Paginator) simple and flexible pagination controls generator for PHP, JavaScript, Python
* [Formal](https://github.com/foo123/Formal) a simple and versatile (Form) Data validation framework based on Rules for PHP, JavaScript, Python
* [Dialect](https://github.com/foo123/Dialect) a cross-vendor & cross-platform SQL Query Builder, based on [GrammarTemplate](https://github.com/foo123/GrammarTemplate), for PHP, JavaScript, Python
* [DialectORM](https://github.com/foo123/DialectORM) an Object-Relational-Mapper (ORM) and Object-Document-Mapper (ODM), based on [Dialect](https://github.com/foo123/Dialect), for PHP, JavaScript, Python
* [Unicache](https://github.com/foo123/Unicache) a simple and flexible agnostic caching framework, supporting various platforms, for PHP, JavaScript, Python
* [Xpresion](https://github.com/foo123/Xpresion) a simple and flexible eXpression parser engine (with custom functions and variables support), based on [GrammarTemplate](https://github.com/foo123/GrammarTemplate), for PHP, JavaScript, Python
* [Regex Analyzer/Composer](https://github.com/foo123/RegexAnalyzer) Regular Expression Analyzer and Composer for PHP, JavaScript, Python
**Example:**
1. Captcha with Position Distortion: 
2. Captcha with Scale Distortion: 
3. Captcha with Gradient Background: 
4. Captcha with custom pattern background: 
```php
// setup
$captcha = (new SimpleCaptcha())
->option('secret_key', 'SECRET_KEY')
->option('secret_salt', 'SECRET_SALT_')
->option('difficulty', 1) // 0 (easy) to 3 (difficult)
->option('distortion_type', 1) // 1: position distortion, 2: scale distortion
->option('num_terms', 2)
->option('max_num_terms', 4) // -1 means constant num_terms
->option('min_term', 1)
->option('max_term', 21)
->option('has_multiplication', true)
->option('has_division', true)
->option('has_equal_sign', true)
->option('color', 0x121212)
->option('background', 0xffffff)
;
```
```html
reset(); ?>
Compute result ;%20?>)
Submit
```
```php
// use it
$app->on('/validate', function() use ($captcha) {
// you can store the captcha hash in the $_SESSION or in $_COOKIE as well
if ($captcha->validate($_POST['answer'], $_POST['hash']))
{
// correct captcha
}
else
{
// wrong captcha
}
});
```