wireInstanceOf() function

Does given instance (or class) represent an instance of the given className (or class names)?

Since version 3.0.108 the $className argument may also represent an interface, array of interfaces, or mixed array of interfaces and class names. Previous versions did not support interfaces unless the $instance argument was an object.

Usage

// basic usage
$bool = wireInstanceOf($instance, $className);

// usage with all arguments
$bool = wireInstanceOf($instance, $className, bool $autoload = true);

Arguments

NameType(s)Description
instanceobject, string

Object instance to test (or string of its class name).

classNamestring, array

Class/interface name or array of class/interface names to test against.

autoload (optional)bool

Allow PHP to autoload the class? (default=true)

Return value

bool string

Returns one of the following:

  • false (bool): if not an instance (whether $className argument is string or array).
  • true (bool): if given a single $className (string) and $instance is an instance of it.
  • ClassName (string): first matching class/interface name if $className was an array of classes to test.

Functions methods and properties

API reference based on ProcessWire core version 3.0.130

Twitter updates

  • New post: With ProcessWire 3.0.130, this week we’ll take a detailed look at a few useful new API additions made in the last few weeks, along with examples of each—More
    12 April 2019
  • New post: This week ProcessWire ProMailer has been released, plus we’ve got a nice upgrade in our community support forum, and more— More
    15 March 2019
  • New post: This week we look at the latest version of ProcessWire, 3.0.127 with nearly 30 new commits resolving dozens of older issue reports and a couple useful new features— More
    1 March 2019

Latest news

  • ProcessWire Weekly #257
    In the 257th issue of ProcessWire Weekly we'll walk you through the new features in ProcessWire 3.0.130, introduce two new third party modules, and showcase the elegant new website of the QFMA. Read on!
    Weekly.pw / 13 April 2019
  • ProcessWire 3.0.130 core updates
    This week we’ll take a detailed look at a few useful new API additions made in the last few weeks, along with examples of each.
    Blog / 12 April 2019
  • Subscribe to weekly ProcessWire news

“We chose ProcessWire because of its excellent architecture, modular extensibility and the internal API. The CMS offers the necessary flexibility and performance for such a complex website like superbude.de. ProcessWire offers options that are only available for larger systems, such as Drupal, and allows a much slimmer development process.” —xport communication GmbH