Update Form.php

Author: mevdschee

src/Form.php

@@ -210,4 +210,34 @@ public function renderDom(\DOMDocument $doc): \DOMElement
         }
         return $formElement;
     }
+    
+    public function toString(bool $withRoot = true, bool $asHtml = true): string
+    {
+        // save the DOMElement to a string
+        $domDocument = new \DOMDocument('1.0', 'UTF-8');
+        $form = $this->renderDom($domDocument);
+        $domDocument->appendChild($form);
+        if ($asHtml) {
+            // save the HTML to a string
+            $str = $domDocument->saveHTML($form);
+        } else {
+            // format the output as XML (for testing purposes)
+            $domDocument->formatOutput = true;
+            $str = $domDocument->saveXML($form);
+        }
+        if (!$str) {
+            throw new \RuntimeException('Failed to save XML');
+        }
+        if (!$withRoot) {
+            $str = str_replace("\n  ", "\n", $str);
+            $str = preg_replace('/^<' . $this->tag . '[^>]*>/', '', $str);
+            $str = preg_replace('/<\/' . $this->tag . '>$/', '', $str);
+        }
+        return trim($str);
+    }
+
+    public function render(bool $withRoot = true): void
+    {
+        echo $this->toString($withRoot);
+    }
 }