diff -ru src/Symfony/Component/VarDumper/Resources/functions/dump.php src/Symfony/Component/VarDumper/Resources/functions/dump.php
--- src/Symfony/Component/VarDumper/Resources/functions/dump.php	2024-09-03 07:56:36.885908369 +0000
+++ src/Symfony/Component/VarDumper/Resources/functions/dump.php	2024-09-03 07:56:37.456928767 +0000
@@ -45,7 +45,7 @@
 if (!function_exists('dd')) {
     function dd(mixed ...$vars): never
     {
-        if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg', 'embed'], true) && !headers_sent()) {
+        if (!in_array(\PHP_SAPI, ['cli', 'phpdbg', 'embed'], true) && !headers_sent()) {
             header('HTTP/1.1 500 Internal Server Error');
         }
 
@@ -58,9 +58,9 @@
         $acceptHeader = $_SERVER['HTTP_ACCEPT'] ?? '---';
 
         if (
-            str_contains($acceptHeader, '*/*') ||
-            str_contains($acceptHeader, 'text/html') ||
-            \in_array(\PHP_SAPI, ['cli', 'phpdbg', 'embed'], true)
+            str_contains($acceptHeader, '*/*')
+            || str_contains($acceptHeader, 'text/html')
+            || in_array(\PHP_SAPI, ['cli', 'phpdbg', 'embed'], true)
         ) {
             dump($vars);