--- ext-src/php_swoole.cc.orig
+++ ext-src/php_swoole.cc
@@ -161,10 +161,24 @@ static void php_swoole_init_globals(zen
 void php_swoole_register_shutdown_function(const char *function) {
     php_shutdown_function_entry shutdown_function_entry;
     zval function_name;
     ZVAL_STRING(&function_name, function);
+#if PHP_VERSION_ID >= 80500
+    // PHP 8.5: shutdown function structure changed - removed fci field
+    shutdown_function_entry.params = NULL;
+    shutdown_function_entry.param_count = 0;
+
+    if (zend_fcall_info_init(&function_name, 0, NULL,
+                              &shutdown_function_entry.fci_cache, NULL, NULL) != SUCCESS) {
+        zval_ptr_dtor(&function_name);
+        return;
+    }
+
+    register_user_shutdown_function(Z_STRVAL(function_name), Z_STRLEN(function_name), &shutdown_function_entry);
+    zval_ptr_dtor(&function_name);
+#else
     zend_fcall_info_init(
         &function_name, 0, &shutdown_function_entry.fci, &shutdown_function_entry.fci_cache, NULL, NULL);
     register_user_shutdown_function(Z_STRVAL(function_name), Z_STRLEN(function_name), &shutdown_function_entry);
+#endif
 }

 void php_swoole_set_global_option(HashTable *vht) {
     zval *ztmp;