Get or set an output region (primarily for front-end output usage)

This function is an convenience for storing markup that ultimately gets output in a _main.php file (or whatever file $config->appendTemplateFile is set to). It is an alternative to passing variables between included files and provides an interface for setting, appending, prepending and ultimately getting markup (or other strings) for output. It’s designed for use the the “Delayed Output” strategy, though does not necessarily require it.

This function can also be accessed as wireRegion(), and that function is always available regardless of whether the Functions API is enabled or not.

Note: unlike other functions in the Functions API, this function is not related to API variables.

Example

// define a region
region('content', '<p>this is some content</p>');

// prepend some text to region
region('+content', '<h2>Good morning</h2>');

// append some text to region
region('content+', '<p><small>Good night</small></p>');

// output a region
echo region('content');

// get all regions in an array
$regions = region('*');

// clear the 'content' region
region('content', '');

// clear all regions
region('*', '');

Usage

// basic usage
$string = region();

// usage with all arguments
$string = region(string $key = '', $value = null);

Arguments

NameType(s)Description
key (optional)string

Name of region to get or set.

  • Specify "*" to retrieve all defined regions in an array.
  • Prepend a "+" to the region name to have it prepend your given value to any existing value.
  • Append a "+" to the region name to have it append your given value to any existing value.
  • Prepend a "++" to region name to make future calls without "+" automatically prepend.
  • Append a "++" to region name to make future calls without "+" to automatically append.
value (optional)null, string

If setting a region, the text that you want to set.

Return value

string null bool array

Returns string of text when getting a region, NULL if region not set, or TRUE if setting region.


Functions methods and properties

API reference based on ProcessWire core version 3.0.236

Latest news

  • ProcessWire Weekly #514
    In the 514th issue of ProcessWire Weekly we'll check out the latest blog post from Ryan, introduce two new third party modules — Page List Versions Counter and Fieldtype Fieldset Panel — and more. Read on!
    Weekly.pw / 16 March 2024
  • Invoices Site Profile
    The new invoices site profile is a free invoicing application developed in ProcessWire. It enables you to create invoices, record payments to them, email invoices to clients, print invoices, and more. This post covers all the details.
    Blog / 15 March 2024
  • Subscribe to weekly ProcessWire news

“Indeed, if ProcessWire can be considered as a CMS in its own right, it also offers all the advantages of a CMF (Content Management Framework). Unlike other solutions, the programmer is not forced to follow the proposed model and can integrate his/her ways of doing things.” —Guy Verville, Spiria Digital Inc.