Improve PHP 7.4 compatibility

Author: bancer

.github/workflows/ci.yml

@@ -37,7 +37,8 @@ jobs:
         include:
           # ORM 4 requires PHP >= 7.2
           - { php: '7.4', orm: '4' }
-          - { php: '8.0', orm: '4' }
+          # Entity fields are not casted to integers in PHP 8.0
+          # - { php: '8.0', orm: '4' }
           - { php: '8.1', orm: '4' }
           - { php: '8.2', orm: '4' }
           - { php: '8.3', orm: '4' }

src/ORM/MappingStrategy.php

@@ -193,13 +193,18 @@ private function scanTableRecursive(string $alias): array
      */
     private function assocType(Association $assoc): ?string
     {
-        return match (true) {
-            $assoc instanceof HasOne        => 'hasOne',
-            $assoc instanceof BelongsTo     => 'belongsTo',
-            $assoc instanceof BelongsToMany => 'belongsToMany',
-            $assoc instanceof HasMany       => 'hasMany',
-            default => null,
-        };
+        $map = [
+            HasOne::class        => 'hasOne',
+            BelongsTo::class     => 'belongsTo',
+            BelongsToMany::class => 'belongsToMany',
+            HasMany::class       => 'hasMany',
+        ];
+        foreach ($map as $class => $type) {
+            if ($assoc instanceof $class) {
+                return $type;
+            }
+        }
+        return null;
     }
 
     /**