Helpers
Kohana comes with many static “helper” functions to make certain tasks easier.
You can make your own helpers by simply making a class and putting it in the classes directory, and you can also extend any helper to modify or add new functions using transparent extension.
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[Arr] - Array functions. Get an array key or default to a set value, get an array key by path, etc.
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[CLI] - Parse command line options.
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[Cookie] - Covered in more detail on the Cookies page.
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[Date] - Useful date functions and constants. Time between two dates, convert between am/pm and military, date offset, etc.
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[Encrypt] - Covered in more detail on the Security page.
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[Feed] - Parse and create RSS feeds.
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[File] - Get file type by mime, split and merge a file into small pieces.
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[Form] - Create HTML form elements.
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[Fragment] - Simple file based caching. Covered in more detail on the Fragments page.
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[HTML] - Useful HTML functions. Encode, obfuscate, create script, anchor, and image tags, etc.
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[I18n] - Internationalization helper for creating multilanguage sites.
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[Inflector] - Change a word into plural or singular form, camelize or humanize a phrase, etc.
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[Kohana] - The Kohana class is also a helper. Debug variables (like print_r but better), file loading, etc.
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[Num] - Provides locale aware formating and english ordinals (th, st, nd, etc).
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[Profiler] - Covered in more detail on the Profiling page.
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[Remote] - Remote server access helper using CURL.
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[Request] - Get the current request url, create expire tags, send a file, get the user agent, etc.
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[Route] - Create routes, create an internal link using a route.
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[Security] - Covered in more detail on the Security page.
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[Session] - Covered in more detail on the Sessions page.
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[Text] - Autolink, prevent window words, convert a number to text, etc.
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[URL] - Create a relative or absolute URL, make a URL-safe title, etc.
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[UTF8] - Provides multi-byte aware string functions like strlen, strpos, substr, etc.
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[Upload] - Helper for uploading files from a form.
