Anonymous

An anonymous structure is a definition that usually has a name, but may also go without it.

There a several structures which may have an anonynous version :

• functions : there are two types : closures and arrow functions

• method : the magic method __invoke()

• classes

• constants : basically, it is a literal value

• catch : in this case, the exception is caught, but it is not provided in a related variable

Some structures are always named: variable, property, method,

Anonymous structure should be be confused with dynamic structures: these structures are defined with a name which is stored in a variable, or a similar data container.

<?php
     $closure = function () {} ;

     $arrowFunction = fn() => 1;

     'literal value';

     // an object of an anonymous class
     new class() {};

     try {}
     catch(Exception ) {}

?>

Related : Anonymous Function, Anonymous Class, Anonymous Catch, Dynamic Call, __invoke() Method