From eba1a94b4f1c9f8ea72ee5a9083ee28ca89ee157 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Mon, 12 Apr 2021 22:14:20 +0200
Subject: [PATCH] Use `XPath::query()` for its superior performance

---
 .../lib/system/html/node/AbstractHtmlNodeProcessor.class.php    | 2 +-
 .../system/html/output/node/HtmlOutputNodeProcessor.class.php   | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/wcfsetup/install/files/lib/system/html/node/AbstractHtmlNodeProcessor.class.php b/wcfsetup/install/files/lib/system/html/node/AbstractHtmlNodeProcessor.class.php
index 6e4cf72229..e07b677798 100644
--- a/wcfsetup/install/files/lib/system/html/node/AbstractHtmlNodeProcessor.class.php
+++ b/wcfsetup/install/files/lib/system/html/node/AbstractHtmlNodeProcessor.class.php
@@ -283,7 +283,7 @@ abstract class AbstractHtmlNodeProcessor implements IHtmlNodeProcessor {
 		}
 		
 		$elements = [];
-		foreach ($this->getDocument()->getElementsByTagName($tagName) as $element) {
+		foreach ($this->getXPath()->query("//{$tagName}") as $element) {
 			$elements[] = $element;
 		}
 		
diff --git a/wcfsetup/install/files/lib/system/html/output/node/HtmlOutputNodeProcessor.class.php b/wcfsetup/install/files/lib/system/html/output/node/HtmlOutputNodeProcessor.class.php
index d2e54f1740..9ac423ce51 100644
--- a/wcfsetup/install/files/lib/system/html/output/node/HtmlOutputNodeProcessor.class.php
+++ b/wcfsetup/install/files/lib/system/html/output/node/HtmlOutputNodeProcessor.class.php
@@ -98,7 +98,6 @@ class HtmlOutputNodeProcessor extends AbstractHtmlNodeProcessor {
 		
 		if ($this->outputType !== 'text/html') {
 			// convert `<p>...</p>` into `...<br><br>`
-			$paragraphs = [];
 			foreach ($this->getXPath()->query('//p') as $paragraph) {
 				$isLastNode = true;
 				$sibling = $paragraph;
-- 
2.20.1