Yii2's Helper classes play a pivotal role in simplifying routine coding tasks like string or array manipulation and HTML code generation. They are organized within the Yii helpers namespace as static classes, indicating that they should not be instantiated but rather accessed through static properties and methods.
In the Yii releases, several fundamental Helper classes prove indispensable for developers. Notable among them are:
ArrayHelper
Console
FileHelper
FormatConverter
Html
HtmlPurifier
Imagine (provided by yii2-imagine extension)
Inflector
Json
Markdown
StringHelper
Url
VarDumper
In this tutorial, we'll delve into a deep explanation of Yii2 Helper Libraries, showcasing their thematically targeted coding support modules. Here's a glimpse of some of the Helper classes included with Yii2:
ArrayHelper: Facilitates easier array handling with functions like safe value retrieval, mapping, and merging.
Console: Aids command-line functionality, input processing, and colorful text output.
FileHelper: Expands PHP's fundamental file management capabilities.
FormatConverter: Transforms a variety of formats, with a primary focus on dates.
Html: Dynamically generates commonly used HTML tags.
HtmlPurifier: Improves security by cleaning up user-input text.
Imagine (yii2-imagine plugin): Adds image manipulation capabilities to Imagine.
Inflector: Provides handy string methods for typical transformations.
Json: Encodes and decodes JSON data.
Markdown to HTML: Converts markdown content to HTML.
As a practical demonstration, we'll guide you through creating a helper in Meeting Planner, the focus of our Envato Tuts+ startup series.
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