Fieldtype::isEmptyValue() method

Return whether the given value is considered empty or not.

This can be anything that might be present in a selector value and thus is typically a string. However, it may be used outside of that purpose so you shouldn't count on it being a string.

Example: an integer or text Fieldtype might not consider a "0" to be empty, whereas a Page reference would.

Usage

$bool = $fieldtype->isEmptyValue(Field $field, mixed $value);

Arguments

NameType(s)Description
fieldField
valuemixed

Return value

bool


Fieldtype methods and properties

API reference based on ProcessWire core version 3.0.155

Twitter updates

  • This post covers a few of the bigger updates in ProcessWire 3.0.154+3.0.155. This includes new live replacement of text in core and modules, a new method for creating canonical URLs, and some major upgrades to our input->urlSegment() method! More
    24 April 2020
  • A brief look at what's new in ProcessWire 3.0.154 in this forum post: More
    17 April 2020
  • This week we’ve got a few new and interesting core updates in progress, though none quite ready to release just yet. So rather than releasing version 3.0.154 today, I thought we'd instead take a brief look at what’s coming over the next few weeks… More
    3 April 2020

Latest news

  • ProcessWire Weekly #311
    In the 311th issue of ProcessWire Weekly we're going to talk a bit about the latest dev versions of ProcessWire, introduce a couple of new third party modules, and more. Read on!
    Weekly.pw / 25 April 2020
  • ProcessWire 3.0.154 and 3.0.155 core updates
    This post covers a few of the bigger updates in ProcessWire 3.0.154 and 3.0.155 on the dev branch. This includes a new function for live replacement of text in core and modules, a new method for creating canonical URLs, and some major upgrades to our $input->urlSegment() method that I think you’ll like!
    Blog / 24 April 2020
  • Subscribe to weekly ProcessWire news

I just love the easy and intuitive ProcessWire API. ProcessWire rocks!” —Jens Martsch, Web developer