src(Image): check if file exist while creating image resource

Change-Id: Iad56787e29fdc7de20a59785c6376421a96e1794

Author: andi34

src/Image.php

@@ -365,6 +365,19 @@ public function createFromImage(string $image): GdImage|false
                 $image = PathUtility::getAbsolutePath($image);
             }
 
+            if (!file_exists($image)) {
+                $imageAlt1 = $_SERVER['DOCUMENT_ROOT'] . $image;
+                $imageAlt2 = $_SERVER['DOCUMENT_ROOT'] . '/' . $image;
+
+                if (file_exists($imageAlt1)) {
+                    $image = $imageAlt1;
+                } elseif (file_exists($imageAlt2)) {
+                    $image = $imageAlt2;
+                } else {
+                    throw new \Exception('File not found: ' . $image);
+                }
+            }
+
             $resource = imagecreatefromstring((string)file_get_contents($image));
             if (!$resource) {
                 throw new \Exception('Can\'t create GD resource.');