diff --git a/framework/helper.class.php b/framework/helper.class.php
index 4cfa7a2fd4..d29557aaf1 100644
--- a/framework/helper.class.php
+++ b/framework/helper.class.php
@@ -810,21 +810,31 @@ function getVisions(): array
 }
 
 /**
- * Save any message with any type to the php log file which prefix with 'php.<today>'.
+ * Save debug log to the php log file which prefix with 'debug.<today>'.
  *
- * @param  mixed  $message
- * @param  string $file
- * @param  int    $line
+ * @param  mixed $message
  * @return void
  */
-function debug($message = '', $file = 'undefined', $line = 0)
+function debug($message = ''): void
 {
-    if(!is_string($message)) $message = (string)json_encode($message, JSON_PRETTY_PRINT);
+    static $times = [];
+    $time     = microtime(true);
+    $duration = $times ? $time - end($times) : 0;
+    $times[]  = $time;
 
-    if(empty($file) || $file == 'undefined') $message .= (new Exception())->getTraceAsString();
+    static $counts = [];
+    $count    = $counts ? end($counts) + 1 : 1;
+    $counts[] = $count;
 
     global $app;
-    $app->saveError(E_USER_WARNING, $message, $file, $line);
+    $logFile  = $app->getLogRoot() . 'debug.' . date('Ymd') . '.log.php';
+    $uid      = $_SERVER['HTTP_X_ZIN_UID'] ?? '';
+    $count    = sprintf('%04d', $count);
+    $time     = date('H:i:s');
+    $duration = round($duration, 3);
+    if($duration < 0.001) $duration = 0.001;
+    if(is_object($message) || is_array($message)) $message = json_encode($message, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+    file_put_contents($logFile, $count . ($uid ? " uid=$uid" : '') . " time=$time duration={$duration}s message=$message\n", FILE_APPEND);
 }
 
 /**