diff --git a/.gitignore b/.gitignore
index e33b94d..a0deea2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 .codex-temp/
+php-server-error.log
diff --git a/scripts/import/import_tcrb.php b/scripts/import/import_tcrb.php
index 28fd9e0..0fd3a69 100644
--- a/scripts/import/import_tcrb.php
+++ b/scripts/import/import_tcrb.php
@@ -40,7 +40,7 @@ foreach (['host', 'dbname', 'user', 'pass'] as $requiredKey) {
     }
 }
 
-$options = parseCliArguments($argv);
+$options = parseCliArguments(getCliArguments());
 
 if (($options['help'] ?? false) === true) {
     writeUsage();
@@ -341,6 +341,19 @@ function parseCliArguments(array $argv): array
     return $options;
 }
 
+function getCliArguments(): array
+{
+    if (isset($GLOBALS['argv']) && is_array($GLOBALS['argv'])) {
+        return $GLOBALS['argv'];
+    }
+
+    if (isset($_SERVER['argv']) && is_array($_SERVER['argv'])) {
+        return $_SERVER['argv'];
+    }
+
+    return [];
+}
+
 function writeUsage(): void
 {
     $usageLines = [
@@ -516,12 +529,10 @@ PS
         $response = curl_exec($ch);
         if ($response === false) {
             $error = curl_error($ch);
-            curl_close($ch);
             throw new RuntimeException('Download fehlgeschlagen: ' . $error);
         }
 
         $httpCode = (int) curl_getinfo($ch, CURLINFO_RESPONSE_CODE);
-        curl_close($ch);
 
         if ($httpCode < 200 || $httpCode >= 300) {
             throw new RuntimeException("Download fehlgeschlagen. HTTP-Status: {$httpCode}");
@@ -699,6 +710,31 @@ function jdToUtcString(float $jd): string
 function writeMessage(string $message, bool $isError = false): void
 {
     $prefix = '[' . date('Y-m-d H:i:s') . '] ';
-    $stream = $isError ? STDERR : STDOUT;
+    $stream = openOutputStream($isError);
     fwrite($stream, $prefix . $message . PHP_EOL);
 }
+
+/**
+ * `STDOUT` und `STDERR` sind in manchen CGI-/Web-Kontexten nicht definiert.
+ * Daher greifen wir auf die entsprechenden php:// Streams zurueck.
+ *
+ * @return resource
+ */
+function openOutputStream(bool $isError)
+{
+    if ($isError && defined('STDERR')) {
+        return STDERR;
+    }
+
+    if (!$isError && defined('STDOUT')) {
+        return STDOUT;
+    }
+
+    $stream = fopen($isError ? 'php://stderr' : 'php://stdout', 'wb');
+
+    if ($stream === false) {
+        throw new RuntimeException('Ausgabestream konnte nicht geoeffnet werden.');
+    }
+
+    return $stream;
+}