Skip to content

The CMS
Docs
- Guide
- Reference
- Cookbook
- Quicktips
- Screencasts
- Glossary
- Archive
Resources
- Plugins
- Themes
- Newsletter
- Buzz
- License Hub
Community
Partners

Try
Buy

View all results ›

Formatting text
- KirbyText
- Markdown
Templates
- Field methods
- Helpers
Panel
- Blueprints
- Fields
- Sections
- Blocks
- Icons
- Styling
- Samples
Objects
- $kirby
- $site
- $page
- $pages
- $file
- $files
- $user
- $users
- $block
- $blocks
- $layout
- $layouts
- $language
- $languages
- $pagination
- $request
- $session
- All classes
- Aliases
Router
- Patterns
- Response types
System
- Config options
- Urls
- Roots
- Requirements
- Validators
Plugins
API
- Authentication
- Languages
- Pages
- Roles
- Site
- System
- Translations
- Users
Tools
- A
- Cookie
- Data
- Dir
- Escape
- F
- Header
- Html
- I18n
- Mime
- QrCode
- Query
- Str
- Tpl
- Url
- V
- Xml

accepted

Valid: 'yes'|ortrue|or1|or'on'
alpha

Valid: a-z|orA-Z
alphanum

Valid: a-z|orA-Z|or0-9
between

Checks for numbers within the given range
callback

Checks with the callback sent by the user It's ideal for one-time custom validations
contains

Checks if the given string contains the given value
date

Checks for a valid date or compares two dates with each other.
denied

Valid: 'no'|orfalse|or0|or'off'
different

Checks for a value, which does not equal the given value
email

Checks for valid email addresses
empty

Checks for empty values
endsWith

Checks if the given string ends with the given value
filename

Checks for a valid filename
in

Checks if the value exists in a list of given values
integer

Checks for a valid integer
ip

Checks for a valid IP address
json

Checks for valid json
less

Checks if the value is lower than the second value
match

Checks if the value matches the given regular expression
max

Checks if the value does not exceed the maximum value
min

Checks if the value is higher than the minimum value
maxLength

Checks if the number of characters in the value equals or is below the given maximum
minLength

Checks if the number of characters in the value equals or is greater than the given minimum
maxWords

Checks if the number of words in the value equals or is below the given maximum
minWords

Checks if the number of words in the value equals or is below the given maximum
more

Checks if the first value is higher than the second value
notContains

Checks that the given string does not contain the second value
notEmpty

Checks that the given value is not empty
notIn

Checks that the given value is not in the given list of values
num

Checks for a valid number / numeric value (float, int, double)
required

Checks if the value is present
same

Checks that the first value equals the second value
size

Checks that the value has the given size
startsWith

Checks that the string starts with the given start value
tel

Checks for a valid unformatted telephone number
time

Checks for valid time
url

Checks for a valid Url
uuid

Checks for a valid Uuid, optionally for specific model type

json

Checks for valid json

kirby/src/Toolkit/V.php#L450

V::json($value): bool

Parameters

Name	Type	Default
$valuerequired	`mixed`	no default value

Return type

bool

Did you find an error? Help us improve our docs and edit this page on GitHub. Make sure to check out our styleguide

Report an issue on this page on GitHub

Kirby

The CMS that adapts to any project. Made for developers, designers, creators and clients.

🇪🇺 Made in Europe

The CMS
Docs
- Guide
- Reference
- Cookbook
- Quicktips
- Screencasts
- Glossary
- Archive
Resources
- Plugins
- Themes
- Newsletter
- Buzz
- Pixels
- License Hub
Community
Kirby
- Security
- Privacy
- License
- Presskit
- Team
- Contact
With support of