Arguments

Name	Type	Default	Description
id	string		A unique ID. This ID will be used to get the value
type	string	upload	Type of the field
title	string		Title of the field
default	string		Default value from database, if the option doesn’t exist
subtitle	string		Subtitle to display below the title
desc	string		Description to display after the field
help	string		Text to display on right-corner (as hover/popup) the field
class	string		Extra CSS classes (space separated) to append to the field
before	string		Content to display before the field
after	string		Content to display after the field
dependency	array		Define field visibility depending on other field value
attributes	array		Extra HTML attributes to append to the field
sanitize	string		Callback function for sanitizing value
validate	string		Callback function for validating value
EXTRAS
library	array|string	all	Tell the modal to show specific formats (image, video, both)
placeholder	string		Placeholder to be displayed when nothing is selected
button_title	string	Upload	Text to display on the upload button
remove_title	string	Remove	Text to display on the remove button

Simple Upload Field Example

array(
  'id' => 'example-upload',
  'type' => 'upload',
  'title' => 'Upload',
),

Upload Field Example using Only Images

array(
  'id' => 'example-upload',
  'type' => 'upload',
  'title' => 'Upload',
  'library' => 'image',
  'placeholder' => 'https://',
  'button_title' => 'Add Image',
  'remove_title' => 'Remove Image',
),