暂存

vendor/illuminate/validation/Rules/ArrayRule.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Illuminate\Validation\Rules;
+
+use Illuminate\Contracts\Support\Arrayable;
+use Stringable;
+
+use function Illuminate\Support\enum_value;
+
+class ArrayRule implements Stringable
+{
+    /**
+     * The accepted keys.
+     *
+     * @var array
+     */
+    protected $keys;
+
+    /**
+     * Create a new array rule instance.
+     *
+     * @param  \Illuminate\Contracts\Support\Arrayable|array|null  $keys
+     */
+    public function __construct($keys = null)
+    {
+        if ($keys instanceof Arrayable) {
+            $keys = $keys->toArray();
+        }
+
+        $this->keys = is_array($keys) ? $keys : func_get_args();
+    }
+
+    /**
+     * Convert the rule to a validation string.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        if (empty($this->keys)) {
+            return 'array';
+        }
+
+        $keys = array_map(
+            static fn ($key) => enum_value($key),
+            $this->keys,
+        );
+
+        return 'array:'.implode(',', $keys);
+    }
+}