refactor: replace empty()

Author: kenjis

app/Entities/GitHub/URITrait.php

@@ -22,7 +22,7 @@ public function __get(string $key)
         $result = parent::__get($key);
 
         if (is_string($result) && is_int(strpos($key, 'url'))) {
-            return empty($result) ? null : new URI($result);
+            return ($result === '') ? null : new URI($result);
         }
 
         return $result;

app/Libraries/Blog.php

@@ -73,7 +73,7 @@ public function getRecentPosts(int $limit = 5, int $offset = 0, ?string $categor
                 $temp = $this->readPost($this->config->contentPath, $file);
 
                 // Only collect from the correct category.
-                if (! empty($category) && ! in_array($category, $temp->tags, true)) {
+                if ($category !== null && ! in_array($category, $temp->tags, true)) {
                     continue;
                 }
 
@@ -146,7 +146,7 @@ public function getPost(string $slug)
         if (! $post = cache($cacheKey)) {
             $files = glob("{$this->config->contentPath}*.{$slug}.md");
 
-            if (empty($files)) {
+            if ($files === [] || $files === false) {
                 throw PageNotFoundException::forPageNotFound();
             }
 
@@ -227,7 +227,7 @@ protected function readPost(string $folder, string $filename)
     {
         $contents = file($folder . $filename);
 
-        if (empty($contents)) {
+        if ($contents === [] || $contents === false) {
             return null;
         }