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 3.0.200

Twitter updates

  • New main/master version of ProcessWire that has more than 220 commits, resolves more than 80 issues, adds numerous new features, performance improvements and optimizations, and consumes HALF the disk space of our previous release— More
    13 May 2022
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    22 April 2022
  • ProcessWire 3.0.198 core updates: in this post we take a closer look at 3 useful new features added in this version— More
    15 April 2022

Latest news

  • ProcessWire Weekly #418
    In the 418th issue of ProcessWire Weekly we'll cover recent highlights, share some tips and tricks, and check out the new master version of ProcessWire, 3.0.200. Read on!
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  • ProcessWire 3.0.200 new master/main version
    This new main/master version has more than 220 commits, resolves more than 80 issues, adds numerous new features, performance improvements and optimizations, and consumes HALF the disk space of our previous release. This post covers all the details.
    Blog / 13 May 2022
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