Anagrams

src/Anagram.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App;
+
+use Tightenco\Collect\Support\Collection;
+
+final class Anagram
+{
+    private static function sortLettersInWord(string $word): string
+    {
+        return (new Collection(str_split($word)))
+            ->sort()
+            ->implode('');
+    }
+
+    public static function forWord(string $word, array $candidates): Collection
+    {
+        $word = static::sortLettersInWord($word);
+
+        return (new Collection($candidates))
+            ->filter(fn (string $candidate): bool =>
+                static::sortLettersInWord($candidate) == $word)
+            ->values();
+    }
+}