diff --git a/php/src/GildedRose.php b/php/src/GildedRose.php
index 2f560bb8..d5f2f87e 100644
--- a/php/src/GildedRose.php
+++ b/php/src/GildedRose.php
@@ -24,53 +24,54 @@ final class GildedRose
     public function updateQuality(): void
     {
         foreach ($this->items as $item) {
+            if ($item->name === 'Sulfuras, Hand of Ragnaros') {
+                continue;
+            }
+
             if ($item->name === 'Aged Brie' || $item->name === 'Backstage passes to a TAFKAL80ETC concert') {
                 if ($item->quality < 50) {
                     $item->quality = $item->quality + 1;
                     if ($item->name === 'Backstage passes to a TAFKAL80ETC concert') {
                         if ($item->sellIn < 11) {
-                            if ($item->quality < 50) {
-                                $item->quality = $item->quality + 1;
-                            }
+                            $this->increaseQuality($item);
                         }
                         if ($item->sellIn < 6) {
-                            if ($item->quality < 50) {
-                                $item->quality = $item->quality + 1;
-                            }
+                            $this->increaseQuality($item);
                         }
                     }
                 }
             } else {
-                if ($item->quality > 0) {
-                    if ($item->name !== 'Sulfuras, Hand of Ragnaros') {
-                        $item->quality = $item->quality - 1;
-                    }
-                }
+                $this->decreaseQuality($item);
             }
 
-            if ($item->name === 'Sulfuras, Hand of Ragnaros') {
-            } else {
-                $item->sellIn = $item->sellIn - 1;
-            }
+            $item->sellIn = $item->sellIn - 1;
 
             if ($item->sellIn < 0) {
                 if ($item->name === 'Aged Brie') {
-                    if ($item->quality < 50) {
-                        $item->quality = $item->quality + 1;
-                    }
+                    $this->increaseQuality($item);
                 } else {
                     if ($item->name === 'Backstage passes to a TAFKAL80ETC concert') {
                         $item->quality = $item->quality - $item->quality;
                     } else {
-                        if ($item->quality > 0) {
-                            if ($item->name === 'Sulfuras, Hand of Ragnaros') {
-                            } else {
-                                $item->quality = $item->quality - 1;
-                            }
-                        }
+                        $this->decreaseQuality($item);
                     }
                 }
             }
         }
     }
+
+    private function increaseQuality(Item &$item): void
+    {
+        if ($item->quality >= 50) {
+            return;
+        }
+        $item->quality += 1;
+    }
+
+    private function decreaseQuality(Item &$item): void
+    {
+        if ($item->quality > 0) {
+            $item->quality -= 1;
+        }
+    }
 }