A validator is a computer program used to check the validity or syntactical
correctness of a fragment of code or document. The term is commonly used in the
World Wide Web Consortium validator, maintained at W3C by W3C staff and
collaborators. Checks the markup validity of Web documents in HTML, XHTML, ...
Strings only. This library validates and sanitizes strings only. If you're not sure if
your input is a string, coerce it using input + '' . Passing anything other than a ...
NOTE this validator used to be called Required but the way it behaved (requiring
coerced data, not input data) meant it functioned in a way which was not ...
This is a validator for syndicated feeds. It works with RSS 0.90, 0.91, 0.92, 0.93,
0.94, 1.0, and 2.0. It also validates Atom feeds.
Manually Creating Validators; Form Request Validation. Working With Error
Messages. Custom Error Messages. Available Validation Rules; Conditionally ...
Validator definition, to make valid; substantiate; confirm: Time validated our
suspicions. See more.
The Web Design Group's links to HTML validators and other document checkers.
The WDG Validator will check the syntactical correctness of your HTML to help
you produce more accessible Web pages.
Validator declares a set of [[builtInValidators|built-in validators] which can be
referenced using short names. They are listed as follows: boolean : yii\validators\