Commits on Apr 22, 2022

1. Fix php#8232 - always reference classes in var_export() via their FQCN …

   This fix corrects a behavior of `var_export()` that was mostly "hidden" until PHP 8.1 introduced:
   
   * properties with object initializers
   * constants containing object references
   * default values of class properties containing `enum`s
   
   Since `var_export(..., true)` is mostly used in conjunction with code generation,
   and we cannot make assumptions about the generated code being placed in the root
   namespace, we must always provide the FQCN of a class in exported code.
   
   For example:
   
   ```php
   <?php
   
   namespace MyNamespace { class Foo {} }
   
   namespace { echo "<?php\n\nnamespace Example;\n\n" . var_export(new \MyNamespace\Foo(), true) . ';'; }
   ```
   
   produces:
   
   ```php
   <?php
   
   namespace Example;
   
   MyNamespace\Foo::__set_state(array(
   ));
   ```
   
   This code snippet is invalid, because `Example\MyNamespace\Foo::__set_state()` (which
   does not exist) is called.
   
   With this patch applied, the code looks like following (valid):
   
   ```php
   <?php
   
   namespace Example;
   
   \MyNamespace\Foo::__set_state(array(
   ));
   ```
   
   Ref: php#8232
   Ref: Ocramius/ProxyManager#754

   

   Ocramius authored and iluuu1994 committed Apr 22, 2022
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