add RandomIntGenerator

src/UniqueIdentifierGenerators/RandomIntGenerator.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stancl\Tenancy\UniqueIdentifierGenerators;
+
+use Illuminate\Database\Eloquent\Model;
+use Stancl\Tenancy\Contracts\UniqueIdentifierGenerator;
+
+/**
+ * Generates a cryptographically secure random integer for the tenant key.
+ *
+ * The integer is generated in range (0, PHP_INT_MAX).
+ */
+class RandomIntGenerator implements UniqueIdentifierGenerator
+{
+    public static function generate(Model $model): string|int
+    {
+        return random_int(0, PHP_INT_MAX);
+    }
+}