Merge pull request #343 from FlorentTorregrosa/342-php81

Issue #342 by Grimreaper: PHP 8.1 compatibility. First try.

Author: ademarco

.github/workflows/ci.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        PHP_VERSION: ["7.4", "8.0"]
+        PHP_VERSION: ["7.4", "8.0", "8.1"]
     env:
       PHP_VERSION: ${{ matrix.php_version }}
     steps:

src/Definition/ArrayAccessDefinitionTrait.php

@@ -14,27 +14,31 @@ trait ArrayAccessDefinitionTrait {
   /**
    * {@inheritdoc}
    */
+  #[\ReturnTypeWillChange]
   public function offsetExists($offset) {
     return array_key_exists($offset, $this->definition);
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\ReturnTypeWillChange]
   public function offsetGet($offset) {
     return $this->definition[$offset] ?? NULL;
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\ReturnTypeWillChange]
   public function offsetSet($offset, $value) {
     $this->definition[$offset] = $value;
   }
 
   /**
    * {@inheritdoc}
    */
+  #[\ReturnTypeWillChange]
   public function offsetUnset($offset) {
     unset($this->definition[$offset]);
   }