symfony
diff --git a/‎src/Symfony/Component/DomCrawler/Crawler.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/DomCrawler/Crawler.php
+2-2Lines changed: 2 additions & 2 deletions b/‎src/Symfony/Component/DomCrawler/Crawler.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/DomCrawler/Crawler.php
+2-2Lines changed: 2 additions & 2 deletions
@@ -1194,11 +1194,11 @@ private function createDOMXPath(\DOMDocument $document, array $prefixes = []): \
      */
     private function discoverNamespace(\DOMXPath $domxpath, string $prefix): ?string
     {
-        if (isset($this->namespaces[$prefix])) {
+        if (\array_key_exists($prefix, $this->namespaces)) {
             return $this->namespaces[$prefix];
         }
 
-        if (isset($this->cachedNamespaces[$prefix])) {
+        if ($this->cachedNamespaces->offsetExists($prefix)) {
             return $this->cachedNamespaces[$prefix];
         }
Original file line number	Diff line number	Diff line change
`@@ -1194,11 +1194,11 @@ private function createDOMXPath(\DOMDocument $document, array $prefixes = []): \`
`1194`	`1194`	`*/`
`1195`	`1195`	`private function discoverNamespace(\DOMXPath $domxpath, string $prefix): ?string`
`1196`	`1196`	`{`
`1197`		`- if (isset($this->namespaces[$prefix])) {`
	`1197`	`+ if (\array_key_exists($prefix, $this->namespaces)) {`
`1198`	`1198`	`return $this->namespaces[$prefix];`
`1199`	`1199`	`}`
`1200`	`1200`
`1201`		`- if (isset($this->cachedNamespaces[$prefix])) {`
	`1201`	`+ if ($this->cachedNamespaces->offsetExists($prefix)) {`
`1202`	`1202`	`return $this->cachedNamespaces[$prefix];`
`1203`	`1203`	`}`
`1204`	`1204`