Pangram

src/Pangram.php

@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App;
+
+function isPangram(string $input): bool
+{
+    $split = str_split($input);
+    $lower = array_map('strtolower', $split);
+    $filtered = array_filter($lower, fn(string $letter) => $letter != ' ');
+
+    return count(array_unique($filtered)) == 26;
+}