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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    419 Page Expired (Laravel Framework) Used by the Laravel Framework when a CSRF Token is missing or expired. [30] 420 Method Failure (Spring Framework) A deprecated response status proposed during the development of WebDAV [31] used by the Spring Framework when a method has failed. [32] 420 Enhance Your Calm

  3. Laravel - Wikipedia

    en.wikipedia.org/wiki/Laravel

    An increase of Laravel's userbase and popularity lined up with the release of Laravel 3. [1] Laravel 4, codenamed Illuminate, was released in May 2013. It was made as a complete rewrite of the Laravel framework, migrating its layout into a set of separate packages distributed through Composer, which serves as an application-level package manager.

  4. Data validation - Wikipedia

    en.wikipedia.org/wiki/Data_validation

    Data validation is intended to provide certain well-defined guarantees for fitness and consistency of data in an application or automated system. Data validation rules can be defined and designed using various methodologies, and be deployed in various contexts. [1]

  5. Help:Markup validation - Wikipedia

    en.wikipedia.org/wiki/Help:Markup_validation

    Portability issues occur when pages are exported to other wikis that do not use HTML Tidy and HTML errors are exposed. Editors who use referencing methods such as Footnote3 should always validate pages. Use of these templates make it very easy for an editor to create duplicate HTML ids, causing invalid HTML and in-page linking issues – this ...

  6. XMLHttpRequest - Wikipedia

    en.wikipedia.org/wiki/XMLHttpRequest

    XMLHttpRequest (XHR) is an API in the form of a JavaScript object whose methods transmit HTTP requests from a web browser to a web server. [1] The methods allow a browser-based application to send requests to the server after page loading is complete, and receive information back. [2] XMLHttpRequest is a component of Ajax programming.

  7. W3C Markup Validation Service - Wikipedia

    en.wikipedia.org/wiki/W3C_Markup_Validation_Service

    The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed markup against a document type definition (DTD). Markup validation is an important step towards ensuring the technical quality of web pages.

  8. PHP - Wikipedia

    en.wikipedia.org/wiki/PHP

    PHP 5 introduced private and protected member variables and methods, along with abstract classes, final classes, abstract methods, and final methods. It also introduced a standard way of declaring constructors and destructors , similar to that of other object-oriented languages such as C++ , and a standard exception handling model.

  9. PHP syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/PHP_syntax_and_semantics

    PHP 5 introduced private and protected member variables and methods, along with abstract classes and final classes as well as abstract methods and final methods. It also introduced a standard way of declaring constructors and destructors , similar to that of other object-oriented languages such as C++ , and a standard exception handling model.